The Rise of Multi-Generational and Co-Living Models

Introduction

A New Era of Shared Living: Around the world and in the United States, families are increasingly turning to multi-generational homes and co-living arrangements as a solution to changing demographics and economic pressures. Aging parents are moving in with adult children, “boomerang” young adults are returning home, and even unrelated individuals are choosing communal living setups. These trends are driven by a confluence of factors – longer lifespans and senior care needs, housing affordability challenges, and evolving cultural values that place renewed emphasis on family and community. The result is a rising demand for housing that can comfortably accommodate multiple generations under one roof or multiple households in one community. This white paper explores the data behind this shift, highlights global and U.S. examples of successful multi-gen and co-living models, and explains how BIOS Homes’ modular, flexible designs meet the needs of this emerging market. It also includes insights from Connecticut Real Estate Brokerage LLC on local trends, resale potential, and family-focused buyer preferences.

Demographic Trends Driving Change

An Aging Population: Populations are aging at an unprecedented rate globally. The number of people aged 65 and older worldwide is projected to more than double from about 761 million in 2021 to 1.6 billion by 2050 un.org. In the United States, one in five Americans will be 65+ by 2030, and the 65+ age group will climb from 58 million in 2022 to about 82 million by 2050 prb.org. As societies gray, many seniors seek to “age in place” (remain in their homes or with family rather than enter institutions) – over three-quarters of adults 50+ have expressed this preference datastories.aarp.org. However, aging in place often requires living with or near younger family members who can provide companionship and care. This has led to more elderly parents moving in with their adult children or other relatives. Families are rediscovering the value of keeping multiple generations together to support one another: grandparents may help with childcare, while adult children care for aging parents. The senior caregiving needs are significant – the U.S. has over 44 million family caregivers providing an estimated $873 billion worth of unpaid care each year otsuka-us.com – and multigenerational living can help share this burden within a household.

Young Adults Staying Home Longer: At the other end of the spectrum, younger generations are delaying moving out. Economic challenges have made independent living less attainable for many in their 20s and 30s. In fact, the share of U.S. young adults living with their parents has hit historic highs. In 2020, 52% of Americans aged 18–29 were living with at least one parent, the highest level since the Great Depression pewresearch.org. While that spike was partly due to the COVID-19 pandemic, the underlying trend of young adults remaining in the family home has been building for years. In 1970 only about 7% of 25–35 year-olds in the U.S. lived with parents; by 2022, that share had more than doubled to 17% – a level not seen in 80+ years themortgagepoint.com. Pew Research Center data shows nearly one-third (31%) of young adults 25–29 now live in multigenerational households, often in a parent’s home planetizen.com. Many are forgoing separate housing because of college debt, underemployment, or the high cost of rent and homeownership. This “boomerang” kid phenomenon means two (or even three) adult generations under one roof, blending lifestyles that were traditionally separate. Notably, multigenerational living is occurring up and down the income scale – it’s not only a recourse for lower-income families. Even middle and upper-income families are choosing to combine households for practical and personal reasons planetizen.com.

Ethnic and Cultural Influences: The rise in multigenerational homes also reflects the nation’s changing cultural makeup. In many cultures (Asian, Hispanic, Middle Eastern, etc.), multi-generational living has long been common, and as immigration increases, these traditions influence U.S. norms. Pew Research finds that demographic groups fueling U.S. population growth – including foreign-born and ethnic minority families – are more likely to live with multiple generations, contributing to the overall rise pewresearch.org. At the same time, attitudes are shifting broadly to be more accepting of adult children living at home and older relatives moving in. Rather than a stigma, many Americans now view these arrangements as sensible or even beneficial. In a 2021 Pew survey, over two-thirds of people in multigenerational households described the experience as “rewarding” most or all of the time, despite the inevitable challenges. The COVID-19 pandemic also played a role in this attitudinal shift – during lockdowns, some families merged households for childcare or to take care of vulnerable relatives, discovering unexpected advantages in the process. The emotional support and closer bonds that develop in multi-gen homes are intangible drivers encouraging families to stay together longer rachelblindauer.com.

Housing Affordability and Economic Pressures

A major catalyst for the resurgence of shared living models is the housing affordability crisis. Over the past decade, housing costs (both for purchase and rent) have risen much faster than incomes, pricing out many would-be independent households. Experts cite waning housing affordability as a key cause behind more adults doubling up in the same home themortgagepoint.com. Young adults in particular have been squeezed: one analysis found fewer than 20% of young people living with their parents earn enough to afford local market rent on their own themortgagepoint.com. Faced with high rents, scarce starter homes, and hefty student loans, living with family becomes an economic necessity for many. Multigenerational living effectively serves as a private safety net during tough times pewresearch.org – a role it also played during the Great Recession and now again with pandemic disruptions.

Rising Cost of Living: It’s not only housing costs – expenses across the board (healthcare, childcare, eldercare) have increased, and sharing a home allows families to pool resources. By splitting mortgage/rent, utilities, and groceries among more earners, the per-person cost of living is reduced. This can provide significant relief, especially for “sandwich generation” adults supporting both children and aging parents. Notably, Americans living in multigenerational households have lower poverty rates than those in other arrangements, suggesting combined incomes help buoy the family planetizen.com. For seniors on fixed incomes, moving in with family can alleviate the financial strain of maintaining a house or paying for assisted living. The annual cost of a private room in a U.S. nursing home now exceeds $100,000 on average carescout.com, a price out of reach for many. It’s no surprise that multigenerational living is seen as a cost-effective alternative to institutional care – one that allows older adults to “retain autonomy with dignity” by living among loved ones bioshomes.com. Likewise, young adults who live at home a few extra years may save money to eventually buy a house of their own, or pay down debts. Multi-gen arrangements, in essence, redistribute housing costs across a larger family unit and across generations, easing the burden on each individual.

Co-Living for Unrelated Households: Housing pressures have also given rise to modern co-living models, where unrelated individuals share a home or apartment outfitted with private bedrooms and communal spaces (kitchen, living areas). Co-living startups and developers target young professionals in expensive cities who are willing to trade some privacy for a lower rent and built-in community. This concept has grown into a global industry valued at $7–8 billion in 2024 and projected to grow at double-digit rates annually grandviewresearch.com. In dense urban centers from New York to London to Singapore, co-living buildings offer dorm-style amenities – for example, dozens of studio suites clustered around shared lounges and kitchens. Many industry experts view co-living as “a response to the mismatch between market demand among younger renters and the existing housing supply” archdaily.com. In other words, as conventional apartments became unaffordable, innovative shared housing stepped in to fill the gap. Even some older adults are embracing co-living: empty-nesters are taking on housemates to defray costs and avoid loneliness, and programs in Europe and the U.S. have matched college students with senior homeowners for mutual benefit czepigalaw.com. While co-living among unrelated people is somewhat distinct from multigenerational family housing, both trends speak to a broader reordering of living arrangements driven by economic reality. The lines between the traditional nuclear household and extended community living are blurring.

Key Economic Facts:

• Median U.S. home prices have risen roughly 30% from 2015 to 2022, far outpacing wage growth (which was under 20% in that period). High interest rates in 2023–2024 further stretched affordability for buyers.

• U.S. rents hit record highs in recent years; as an example, Phoenix saw a 25% jump in rents in 2021–2022, prompting many Gen Z and millennial renters to seek alternatives like moving in with family or co-living healthandliving.com.

• By combining households, families can share financial responsibilities: multigenerational homes often have multiple earners contributing. This helps explain why only 8% of those in multigenerational homes are below the poverty line, compared to 11% in single-generation homes planetizen.com.

• The cost of elder care and child care has soared. Having grandparents, parents, and children under one roof can eliminate or reduce the need for paid child care or assisted living facilities, saving families tens of thousands of dollars per year. One-third of U.S. adults in multigenerational households cite caregiving for an aging parent or a young child as a major reason for their living arrangement planetizen.com.

Cultural and Social Shifts

Beyond practical economics, there is a cultural shift underway in how people view communal living and family proximity. Individualism and independence have long been hallmarks of Western housing patterns (e.g. the expectation that young adults strike out on their own by 21, or that elderly parents prefer retirement communities). However, societal values are evolving: many now recognize benefits in togetherness that may have been overlooked in recent decades. The isolation of lockdowns and the loneliness epidemic (especially among both seniors and young adults) highlighted the importance of social connections at home. Multigenerational and co-living models directly combat loneliness by ensuring that no one in the household is “alone” – there is always someone around to talk to or share a meal with. A dramatic example comes from Sweden, where loneliness is viewed as a public health issue. In Helsingborg, a “radical experiment in multigenerational living” called Sällbo was launched specifically to foster inter-age friendships and community theguardian.com. At Sällbo, 72 residents in their 20s and 70s not only live in the same building but sign a contract to spend at least two hours per week socializing together – playing games, cooking, gardening, etc. theguardian.com. Early results have been very positive: participants report feeling like an extended family, and the older residents have reduced feelings of isolation. Sällbo’s success suggests that living among mixed ages can provide emotional fulfillment that single-generation housing sometimes lacks. While not every household will be as intentionally communal as Sällbo, its ethos of “companionship living” is resonating more broadly. In multigenerational family homes, grandparents often find a renewed sense of purpose by interacting with grandchildren daily, and children grow up with built-in mentors and storytellers. These arrangements revive a sense of intergenerational solidarity – a feeling that family (or community) will take care of each other. In an age where work and migration have scattered many families, multi-gen living offers a way to strengthen familial bonds and cultural traditions (like sharing language, cooking, and customs across generations) rachelblindauer.com.

There is also a pragmatic flexibility that modern families appreciate. A home that can accommodate changing needs is seen as a smart investment. For example, a couple in their 30s might welcome having an in-law suite ready if grandma needs to move in, or to use as a home office or guest quarters in the meantime. If a new baby arrives, a live-in relative can help with childcare. Should a financial setback occur, having roommates or extended family can prevent foreclosure or eviction. Young people, having experienced the uncertainty of economic recessions and pandemics, are arguably more open to living with family for stability. Pew Research noted that multigenerational living “shows no sign of peaking”, and a majority of adults in these households report it has “mostly or always been rewarding” despite occasional stress pewresearch.org. In short, the stigma is fading and social acceptance is growing for housing setups that would have been considered unusual a generation ago. Popular media and even television are reflecting this shift with portrayals of three-generation households and co-living friends. The White House itself became a multigenerational home when President Obama’s mother-in-law lived with the First Family – a high-profile example that normalized the concept sunwooddevelopment.com. All these cultural signals reinforce that “living together” can be a positive, desirable choice, not just a fallback.

Global Perspectives on Multi-Gen and Co-Living Models

The trend toward multi-generational and communal living is a global phenomenon, manifesting in various forms across different countries:

• Asia and Latin America – Tradition Meets Necessity: In many Asian and Latin American cultures, it has long been customary for aging parents to live with their adult children. This tradition continues, now reinforced by demographic realities. For instance, Japan’s population over age 65 is nearly 30% and rising; with limited eldercare facilities and a cultural preference for family care, multi-generational households remain common. China’s one-child policy left many single children caring for two parents and four grandparents – a “4-2-1” family structure – which has led to innovative housing designs for supporting so many dependents in one home. In India, large family homes often include courtyards as central gathering spaces to facilitate multi-gen interaction archdaily.com. What is noteworthy is that even as these countries urbanize and younger generations adopt modern lifestyles, the practice of living with family persists or is being adapted (e.g. adult children building additions onto homes for parents rather than moving away). Economic growth has not eliminated the multi-gen model; in some cases, it’s the preferred way to ensure family care and conserve resources. However, challenges exist in balancing privacy with togetherness, especially in dense cities – which has led to design solutions like dual-entry apartments and “two-key” condos that provide separate access for different generations. In Latin America, extended family living is also tied to cultural norms of familial loyalty and support. Countries like Mexico and Brazil still have a high percentage of multigenerational homes by tradition, but interest is growing in formalizing these arrangements through accessory dwelling units (ADUs) or multi-suite homes as their populations age.

• Europe – Co-Housing and Intergenerational Communities: Europe has seen a surge of co-housing communities where people intentionally live together and share facilities, often with a mix of ages. The Nordic countries provide a striking example: despite having strong social welfare systems, loneliness emerged as a serious issue, prompting experiments like Sweden’s Sällbo. As mentioned, Sällbo mixes retirees and millennials in a single housing complex with 51 apartments and numerous communal areas theguardian.com. Each resident or family has a private unit, but they come together for group activities – a model that has reduced loneliness for older folks and given younger residents affordable housing with a built-in support network. Similar projects exist in the Netherlands (such as Humanitas Deventer, where students live for free in a nursing home in exchange for socializing with seniors), and in Spain and France where “intergenerational residences” pair college dorms with elder housing. Cohousing (different from co-living companies) is another European-born concept now global: groups of people design a neighborhood or building together with private homes and shared facilities (kitchens, gardens, etc.), deliberately fostering community. Many cohousing communities explicitly aim for a mix of families, singles, and seniors to create a village-like support system. This aligns closely with multigenerational ideals, even if residents aren’t blood relatives. In the U.K., rising housing costs have pushed more families to live together; the number of multigenerational households exceeded 1.8 million in 2020, and even more are expected now archdaily.com. The U.K. is also seeing commercial co-living ventures – large-scale developments in London have been converting old office buildings into vibrant co-living communities with hundreds of small units and extensive shared amenities archdaily.com. This appeals to young professionals and also some older adults seeking community. According to a 2025 Savills report, co-living developments in the U.K. have increased sharply (87% jump in planning applications in 2024), indicating strong momentum blog.mipimworld.com. Meanwhile, Germany and Denmark have pioneered multi-gen housing at the municipal level – for example, intergenerational housing blocks in Berlin where the city incentivizes developers to include a mix of family apartment sizes and senior-friendly units in one complex.

• Case Study – Sällbo, Sweden: Sällbo (short for sällskap + bo, “company/live” in Swedish) deserves special mention as a case study in intergenerational co-living. Opened in late 2019, Sällbo consists of 51 apartments in a renovated retirement home. It houses 72 residents: more than half are seniors over 70, and the rest are young adults 18–25 (including some refugees) theguardian.com. To become a resident, applicants underwent interviews to ensure a diversity of personalities and a willingness to engage. All residents agreed to a social contract to spend at least 2 hours per week together in communal activities theguardian.com. The building is designed with plentiful shared spaces – a communal living room, game room (with a foosball table, as pictured above), a vegetable garden, craft workshops, and multiple shared kitchens where residents cook and dine together weforum.org. The philosophy is that “generations and cultures meet with social life at the center.” After a few years, Sällbo has been deemed a success in reducing loneliness and fostering mutual learning – the young help the old with technology or groceries; the seniors teach the young life skills and provide grandparent-like support. One 86-year-old resident said it’s “a nice idea to get together instead of each sitting in one little flat” weforum.org. Sällbo is an inspiring example of how intentional design and social agreement can make co-living across generations enriching for everyone. Its model is now being studied for replication in other cities facing loneliness among aging populations. While Sällbo is a unique social experiment, it underscores the broader point: housing that facilitates intergenerational interaction can deliver significant social benefits (reducing isolation, increasing understanding across age groups) that single-generation housing often cannot.

• Government Policy Supporting Multi-Gen Housing: Some governments are responding to these trends with policy changes. In Singapore, the Housing Development Board (HDB) introduced special 3-Generation (3Gen) flats – larger apartments designed for extended families – and a priority scheme for married children to co-locate near their parents hdb.gov.sg. These 3Gen flats include features like four bedrooms and dual master suites to accommodate grandparents. Singapore also offers grants for families who buy homes near their aging parents, recognizing the social value of proximity ssir.org. In Australia, design competitions have been held for “age-friendly homes” that allow gradations of independent living and family cohabitation. In the U.S., state and local governments are increasingly easing zoning to allow Accessory Dwelling Units (ADUs) – like backyard cottages or in-law suites – to encourage multigenerational setups. For example, in 2022 Rhode Island updated its law to let homeowners create an “in-law” apartment by right (no special permit) for a family member 62 or older bioshomes.com. This was explicitly framed as empowering families and optimizing housing stock for “build(ing) for generations” bioshomes.com. California, facing a housing crunch, also passed laws that essentially legalized ADUs statewide, leading to a surge in garage conversions and small backyard homes for relatives or renters. These policy shifts show an institutional acknowledgment that multi-gen living is a pragmatic housing solution worth facilitating. They also hint at a future where flexibility and multi-generational capacity could become a standard consideration in housing design and urban planning.

U.S. Trends and Market Indicators

The United States has seen significant growth in multigenerational households over the past 50 years. After declining mid-century, multigenerational living began rising in the 1970s and has accelerated in recent decades. By 2021, about 59.7 million U.S. residents lived in multi-generational family households, which was 18% of the population – more than double the share in 1971 pewresearch.org. The absolute number of people in multi-gen homes quadrupled since the ’70s pewresearch.org. And this trend is broad-based: while immigrant families have higher rates of multigenerational living, the practice has risen among all racial groups and income levels, including a notable increase among White Americans since 2000 pewresearch.org. The growth continued through 2020–2022, boosted in part by pandemic dynamics. By the 2020 Census count, there were roughly 21% more multigenerational households in the U.S. than a decade prior, and multi-gen homes now compose about 4-5% of all U.S. households (the discrepancy in % vs population share arises from how households are counted and the definition requiring 3+ generations for some stats) patch.com  archdaily.com. The key takeaway is that millions of American families are embracing multi-gen arrangements, making it a sizable segment of the housing market.

Homebuying and Construction Response: The housing industry has taken notice. Home builders and developers are now marketing products specifically for multigenerational buyers. A striking data point from the National Association of Realtors (NAR) shows that 17% of all U.S. home purchases in 2023 were multigenerational family purchases, the highest share since NAR began tracking this in 2013 nar.realtor. In other words, nearly 1 in 6 homes sold was intended to house parents, children, and/or grandparents together. The top reasons cited for these multi-gen home purchases were cost savings, adult children moving back home, and caring for aging parents bloomberg.com. To meet this demand, major builders have created new designs: for example, Lennar (one of the nation’s largest homebuilders) introduced its Next Gen® “Home Within a Home” line a decade ago. A Next Gen home includes an attached private suite with its own entrance, kitchenette, living area, bedroom and bathroom – essentially a small apartment integrated into the single-family house lennar.com. This concept has proven extremely popular. Lennar reports that in some communities (especially in high-cost Western states), Next Gen homes now account for 30–35% of their new home sales, up from around 20% a few years prior healthandliving.com. Seeing entire subdivisions where one-third of buyers opt for a multi-gen layout is a testament to the demand. Lennar’s Division President noted, “We have never seen Next Gen sales in the 35% range… It’s changing the way we are developing our communities.” healthandliving.com. The fastest-growing buyer segment for these homes? Families using the suite for adult children moving back in, often due to unaffordable rents or home prices for those young adults healthandliving.com. This mirrors national stats showing nearly half of 18–29 year-olds lived with parents in 2022 healthandliving.com. Other builders have followed suit: Toll Brothers, Pulte, and local custom builders now advertise floorplans with in-law apartments, dual master suites, or flex spaces that convert to mini-residences. There is also a renovation boom in existing homes as families retrofit basements or garages into independent living areas for relatives.

Accessory Dwelling Units (ADUs): Another response is the rise of ADUs. Homeowners are building small backyard cottages or converting portions of their homes to create a separate dwelling for extended family or renters. Cities like Los Angeles, Seattle, and Portland have seen thousands of ADUs built after regulatory barriers were lowered in recent years. Companies (including BIOS Homes) that supply prefab or modular ADU units have emerged to meet this need. ADUs can be an elegant multigenerational solution: a grown child or an elderly parent can live in the smaller unit with autonomy while remaining steps away from the main house. In Connecticut, for instance, policymakers are encouraging ADUs to address both the housing shortage and multigenerational needs. “Connecticut faces a rapidly aging population, a housing affordability crisis, and a growing need for flexible, multigenerational living options. The solution? ADUs — a smart, sustainable, and compassionate approach to housing,” writes Connecticut Real Estate Brokerage LLC, noting Rhode Island’s recent ADU law as a model bioshomes.com. This local perspective aligns with national trends: making it easier to add in-law suites is seen as one way to increase housing supply and allow families to care for elders at home.

Resale and Market Value: Homes that can accommodate multi-gen living are increasingly attractive in the resale market as well. Realtors report that properties with finished basement apartments, casitas, or dual-master layouts often command premium prices or sell faster, because they tap into this broad buyer need (either for family use or even rental income). Multigenerational-friendly homes cast a wider net of potential buyers, from those planning to host aging parents to those wanting a tenant to offset the mortgage. As an example of market value: one study by Generations United found that nearly 70% of respondents believed multigenerational living improved the financial situation of their household, and many pooled resources to purchase larger homes than they otherwise could gu.org. The NAR’s Generational Trends report also indicates Gen X and baby boomer buyers are the most likely to invest in multi-gen homes, primarily for taking care of parents cms.nar.realtor. With the massive baby boomer cohort now reaching their late 70s and 80s in the next decade, the demand for such housing will likely grow even more. For developers and investors, catering to this demand is not just socially responsive but economically smart – these homes fulfill two or three households’ needs in one sale. In rental markets too, investors see opportunity: a large single-family home can be rented to an extended family or group, often yielding more stable, long-term tenancies. Co-living companies have attracted significant venture capital by promising higher rent per square foot through renting individual bedrooms and providing services. Overall, the real estate industry recognizes that housing models which serve multigenerational and shared living scenarios are a growth segment poised to reshape the market in coming years.

BIOS Homes: Designing for Multigenerational & Co-Living Lifestyles

BIOS Homes has positioned itself at the forefront of this shift by offering modular, flexible home designs tailored to multigenerational and co-living needs. As a social enterprise and an innovative builder, BIOS Homes understands that modern families require houses that can adapt to various life stages and living arrangements. Traditional one-size-fits-all floorplans don’t suffice when you might have grandma, parents, and kids all under one roof – or when you want the option to easily create a separate rental suite. BIOS addresses this with design and construction solutions that prioritize flexibility, privacy, and community in equal measure.

Modular Construction for Custom Layouts: All BIOS homes are built using modular construction, meaning sections of the home are prefabricated in a factory and then assembled on-site. Aside from efficiency and quality benefits, this approach allows a high degree of customization. Homes can be designed with multiple self-contained living modules – for example, a main dwelling for a primary family and an attached module for an extended family member. Because modules are fabricated independently, it’s easy for BIOS to include specialized units like an “in-law suite” module or an extra apartment over the garage. These aren’t afterthought add-ons, but integrated parts of the home’s design. Modular building thus enables BIOS to create “customizable layouts” that accommodate multiple units or generations in one structure bioshomes.com. Layouts can range from side-by-side duplex-style (each generation has their wing) to stacked apartments (one per level) to a main house plus ADU arrangement. This flexibility is ideal for multigenerational living because every family’s situation is different – some may want complete separation, others more intermixing. BIOS can mix and match modules to get the right balance.

Private Suites and Dual-Living Features: A hallmark of BIOS Homes’ multi-gen design is the inclusion of private living suites within a larger home. These suites function as independent living quarters, typically featuring: a bedroom (or two), a full bathroom, a compact kitchenette, and a small living area. Crucially, they have a separate entrance from the outside, allowing an elderly parent or an adult child and their family to come and go without disturbing the main household. This concept mirrors the popular Next Gen® suite pioneered by Lennar, which offers exactly such a private annex lennar.com. BIOS Homes incorporates similar suites but with the added advantage that they can be easily created or reconfigured thanks to modular construction. For instance, if a buyer knows they need an in-law apartment immediately, BIOS can deliver a home whose floorplan explicitly includes it. If the need might arise later, BIOS can design the home with a flex space that can be converted into a suite when required (plumbing and wiring in place for a future kitchenette, etc.). Some BIOS designs feature lock-off units: portions of the home that can be closed off and operated as a separate unit or opened up to join the main home. This dual-use design is perfect for families who anticipate changing usage over time. In multigenerational setups, privacy is paramount – both generations live together but also apart. BIOS ensures sound-insulation and separate HVAC zones for these suites, so that daily schedules and habits (be it Grandpa’s early morning TV or a teenager’s midnight snack) don’t clash. At the same time, the suite is only a door away from the main home’s interior, making it easy to check in on each other or share meals when desired.

Shared “Heart of the Home” Spaces: While providing private quarters, BIOS Homes also emphasize communal spaces that bring everyone together. Many of BIOS’s modular designs include open-concept great rooms and large kitchens that serve as the heart of the home where the whole family can gather. For example, a BIOS multigenerational model might have an oversized kitchen with two cooking stations or extra pantry storage, recognizing that multiple adults may be preparing food. Dining areas are designed to seat a crowd for those big family dinners. Living rooms may have flexible seating nooks so grandkids can do homework while grandparents read nearby. Some designs incorporate a secondary smaller kitchen or wet bar in the in-law suite and a primary kitchen in the main house – this way, the extended family can either cook separately or come together for a big meal. It’s all about adaptability. BIOS also considers features like multiple master suites (so both the parents and grandparents can have a comfortable master bedroom with en-suite bath), and accessible design elements for seniors (like wide doorways, zero-step entries, and an option for an elevator or stair lift in multi-story homes). As noted earlier, many seniors want to age in place but lack homes equipped for mobility or health challenges bioshomes.com. BIOS Homes seeks to fill that gap by incorporating universal design principles from the start – making homes safe and convenient for all ages. This includes ground-floor bedrooms (no need for grandma to climb stairs), curbless showers and grab-bar reinforcements in bathrooms, good lighting and smart home features for monitoring health and safety.

Adaptable and Transformable Spaces: BIOS recognizes that household configurations aren’t static. Kids grow up, adults take new jobs, health statuses change. Therefore, homes must adapt. In BIOS homes, a family room might be built with easily removable partition walls so it can be split into an extra bedroom if needed. An office or den can be constructed with simple conversion to a small studio apartment. Because BIOS uses standardized modules, adding an ADU later is straightforward – for instance, if a family initially doesn’t need a detached cottage but five years later does, BIOS can manufacture a matching ADU module that complements the original home and install it on the property (zoning permitting). This plug-and-play expandability is a unique advantage of modular building. Even within the main structure, future adaptability is considered: open loft areas could be enclosed later, garages can be converted to living space, and so on. The key is designing upfront with future flexibility, rather than having to undertake costly remodels. As a division of Connecticut Real Estate Brokerage LLC, BIOS Homes also consults on zoning and permits to help families create multi-gen setups legally and smoothly. In Connecticut and many states, regulations have historically hindered multi-family use of single-family properties. BIOS leverages its expertise and network (over 750 factories and numerous contractors) instagram.com to navigate these hurdles or advocate for updated rules (as seen in their support for ADU legislation in CT bioshomes.com).

Energy Efficiency and Cost Savings: A side benefit of BIOS Homes’ designs is that they are energy-efficient and cost-effective to operate, which is important for families pooling finances. Modular construction tends to produce very tight, well-insulated buildings. BIOS also integrates sustainable tech (solar panels, efficient HVAC, etc.) to keep utility bills low bioshomes.com . So a multigenerational family not only saves by sharing the mortgage, but also enjoys lower monthly expenses in a BIOS home compared to an older traditional home. This aligns with BIOS’s mission as an affordable, green builder: “affordable, sustainable housing solutions” that provide “lasting value—benefiting both people and the planet.”    bioshomes.com. For co-living scenarios (e.g., unrelated adults sharing a BIOS home), these efficiency features mean each resident’s share of costs is minimized. Furthermore, BIOS’s use of durable, low-maintenance materials eases the upkeep on a home that sees heavy use from a larger household.

In summary, BIOS Homes designs homes not as fixed structures for a stereotypical family, but as dynamic living platforms that can accommodate a variety of shared living models. Whether it’s a “house-in-a-house” multi-gen design with complete dual living quarters, a compound of small modular units for communal living, or a classic home with an attached ADU, BIOS has the expertise to deliver it. By combining modularity, customization, and foresight, BIOS Homes ensures that as families grow or economic conditions change, the home can evolve right along with its occupants.

Benefits and Value Proposition for Stakeholders

For Homebuyers & Families: The rise of multigenerational and co-living housing offers immediate and long-term value to homebuyers, particularly families looking to accommodate loved ones. Some key benefits for this group include:

• Financial Advantages: Sharing housing means sharing costs. Families in multigenerational homes can split the mortgage, taxes, utilities and maintenance, making homeownership affordable when it might not be on a single income. Young adults living with parents can save money for a down payment, and older parents can reduce their living expenses in retirement. Data shows that combining households can significantly relieve financial stress – Americans in multi-gen households are less likely to experience poverty due to pooled resources planetizen.com. Moreover, having an on-site suite offers the potential for rental income if at some point the family isn’t using it (some owners rent out their ADU or basement apartment to non-family tenants for extra cash). In essence, a multigenerational-capable home is an asset that provides economic security. It can prevent the need to pay for outside elder care or childcare (saving tens of thousands per year), and can buffer family members through job losses or illnesses by eliminating rent burdens. In the long run, the home becomes a vessel for intergenerational wealth: rather than paying two or three separate rents, the family invests in one property together, building equity that can benefit everyone.

• Lifestyle & Convenience: For families, there are clear lifestyle perks. Caregiving is simplified – instead of driving across town to check on Grandma each day, she’s under the same roof. About 25% of multigenerational households cite adult elder care as a major reason for living together planetizen.com, and having family on-site makes it far easier to ensure medications are taken, meals are eaten, and help is at hand 24/7. Likewise, parents with young kids have built-in babysitters in the form of grandparents or aunts/uncles at home, which can be a sanity-saver (and money-saver). Everyday logistics also improve: someone is home to sign for packages, feed the pets, or handle home repairs. Families often report that they enjoy eating together and having a fuller household – there’s always someone to talk to or help with a chore. During the recent pandemic, multigenerational homes fared well because they could effectively “bubble” together and not feel as isolated as single individuals might. Culturally, it can be enriching for children to grow up with grandparents and learn from their experiences. Many multigenerational families say living together strengthens their bonds and that they find emotional support in the arrangement rachelblindauer.com. That said, privacy is also key; BIOS Homes designs ensure that family members have their own spaces to retreat to, making the living situation harmonious rather than crowded. Overall, the convenience of having extended family nearby often outweighs the compromises – everything from shared grocery shopping to having an adult at home most times (providing peace of mind for security) makes life a bit easier.

• Stability and Flexibility: In uncertain times, a multigenerational home offers stability. Family members can lean on each other, whether that’s grandparents moving in due to a health issue or an adult child returning after college until they find a good job. The home acts as a “family hub” that adapts to whoever needs it. This flexibility is reassuring; as one generation’s needs decrease, another’s might increase, and the household can rebalance accordingly. For example, if the grandparents eventually pass on or move to assisted living, the in-law suite can transition to a home office, a rental unit, or perhaps be used by a grown child starting their own family. The family home becomes a lasting asset that accommodates life’s changes – truly a home for generations. Culturally, it also allows families to maintain traditions and care for one another in a familiar environment, which can be deeply fulfilling.

For Investors & Developers: The trend toward co-living and multigenerational housing presents attractive opportunities for real estate investors and developers:

• Tapping Growing Demand: As detailed, a record 17% of recent home buyers are seeking multigenerational homes nar.realtor, and that percentage is expected to grow as the population ages and economic pressures continue. Developers who supply products for this niche can capture a fast-growing market segment. For investors, multigenerational properties often have built-in resilience – they appeal to a wider pool of potential tenants or buyers. For instance, an investor who owns a single-family home with an ADU can rent to a larger extended family, or separately to two parties (maximizing income). In markets like Silicon Valley or New York, groups of young professionals already team up to rent homes together (informally co-living). Purpose-built co-living buildings can achieve higher density (and thus higher yield) than traditional apartments by renting by the room with shared amenities. The global co-living market, valued around $8 billion in 2024, is projected to grow at ~13–15% CAGR through 2030 grandviewresearch.com, indicating substantial investor interest. There is also evidence that multigenerational homes hold value well; they might appreciate faster in areas where multi-gen living is common (for example, in areas with high immigrant populations or high housing costs) because of scarcity of suitable supply. By being an early mover in offering multi-gen-friendly designs (like BIOS Homes’ models), a developer can differentiate their communities and achieve quicker absorption of inventory.

• Higher Occupancy and Stability: From a rental investment perspective, a multigenerational household can be a very stable tenant. Often multiple wage-earners contribute to rent, reducing the likelihood of default. The household is typically “all in” on the home, treating it as their long-term base, so they may stay for many years (reducing turnover costs). If one member loses a job, others in the family can step up – providing a safety net that single tenants lack. This was evident in 2020 when young adults moved back home in droves; rather than defaulting on separate leases, they consolidated, which indirectly helped mom and dad’s ability to pay their mortgage. For developers of for-sale housing, catering to multi-gen needs can also mean larger unit sizes and higher sale prices (since the combined family budget is larger). For example, a family that might have bought a $300k home individually can join with parents to afford a $500k two-family property – the builder sells a bigger home, and the family gets more house for their money. Everyone benefits. Additionally, government support (grants, tax incentives, favorable zoning) is increasingly aligning with these housing forms, which could reduce regulatory hurdles for developers. Some cities expedite permits for ADUs or offer density bonuses for including affordable multi-gen units. All this can improve a project’s feasibility and return on investment.

• Social Impact and ESG Alignment: Many investors today look at Environmental, Social, and Governance (ESG) metrics. Multigenerational and co-living housing often scores well on these fronts. Socially, such projects can strengthen communities, reduce isolation, and provide affordable housing options – contributing to social sustainability. They also make more efficient use of resources (one larger home uses less land and energy than two separate smaller homes for the same people). As Connecticut Real Estate Brokerage LLC points out, enabling multigenerational living (through ADUs and flexible housing) is a way to “preserve independence and optimize existing housing stock” while providing dignity for seniors bioshomes.com. Investors aligned with these values may find supporting multi-gen housing both profitable and purpose-driven. There’s also an environmental benefit: multigenerational living has a greener footprint per person – shared utilities and spaces mean less duplication (one kitchen running instead of two, etc.), and typically such households drive fewer car trips (consolidated errands). Some advocacy groups even promote multi-gen living as an environmentally friendly housing option for this reason gu.org. Thus, backing co-living and multi-gen projects can bolster an investor’s ESG credentials.

For Developers/Builders:

• Market Differentiation: Developers who integrate multigenerational design features (like BIOS Homes does) can set their product apart in a crowded housing market. Instead of offering generic 3-bed, 2-bath houses, a builder can market “two homes in one” or “homes built for extended families.” This attracts not only multigenerational buyers but also those looking for home offices, rental income, or guest quarters. It essentially broadens the target market for each home. As an example, one builder noted that including Next Gen suites in their communities boosted sales significantly, as those models started accounting for over one-third of sales when housing costs spiked healthandliving.com. It shows there is an unmet need that, when met, results in eager buyers. In places like Connecticut, where over 55,000 households (and growing) are multigenerational patch.com, designing new homes to serve that demographic can give a competitive edge. Also, developers can partner with multi-gen friendly service providers (such as in-home care companies, or modular ADU suppliers like BIOS) to add value for customers.

• Adaptive Reuse and Urban Infill: The co-living trend offers developers opportunities in adaptive reuse projects – for instance, converting underutilized office buildings or hotels into co-living apartments (as seen in London’s Barbican area plans archdaily.com). These projects can revitalize urban cores and meet housing demand for single professionals at lower cost. For suburban developers, large single-family homes that fell out of favor with small nuclear families could see renewed demand if marketed to extended families or groups. We are already seeing McMansions repurposed as multi-gen residences or group homes. Builders focusing on flexible, modular approaches (like BIOS) can also address this market by renovating or extending existing homes to create multigenerational layouts, not just building new ones. This adds another revenue stream (remodeling) and helps address the fact that much of the U.S. housing stock is older and not designed for today’s family structures.

In essence, the shift toward multi-generational and co-living models creates a win-win scenario: families gain financial and social benefits; investors and developers tap into a robust market with innovative products; and communities benefit from more inclusive, connected living arrangements. BIOS Homes, by aligning its design philosophy with these trends, exemplifies how a builder can lead in delivering value to all stakeholders – providing not just houses, but solutions to shifting generational and economic dynamics.

Local Insights: Connecticut Trends and Perspectives

Connecticut provides a microcosm of these broader trends, and Connecticut Real Estate Brokerage LLC (the parent company of BIOS Homes) has observed firsthand how multi-generational living is playing out in local communities. Data from the 2020 Census shows nearly a statewide increase in multigenerational households in Connecticut, with 130 of 169 towns seeing a rise over the decade patch.com. As of 2020, about 3.9% of Connecticut’s 1.4 million households – roughly 55,526 households – were multigenerational (three or more generations living together) patch.com. This is up from about 3.6% in 2010, indicating growth in extended families residing together. While Connecticut’s percentage is a bit lower than the national average (because the statistic here uses a stricter 3-generation definition), the upward trajectory is clear. Culturally diverse cities like Bridgeport and Hartford lead the state, with 5–7% of households multigenerational patch.com. The drivers mirror those elsewhere: high living costs in Connecticut’s metro areas, the aging of the population (Connecticut has one of the higher median ages in the nation), and families choosing to stay together for care and convenience.

Housing Affordability in CT: Connecticut Real Estate Brokerage LLC notes that housing affordability is a pressing concern in the state, especially for first-time buyers. Many young adults in Connecticut struggle to save for a down payment given student loan burdens and rent levels in places like New Haven or Stamford. This has led to more instances of adult children remaining in or returning to the family home. Simultaneously, Connecticut’s elderly population is growing – by 2018, about 17% of Connecticut residents were 65 or older, and that is projected to exceed 20% by 2030 (similar to the national trend) bioshomes.com. These seniors often prefer to live with family in familiar communities rather than relocate to Florida or enter nursing homes. The convergence of these factors means Connecticut families increasingly seek homes that accommodate multiple generations. Realtors in the state report higher demand for properties with in-law apartments, finished basements, or duplex-style layouts. “We get a lot more buyers these days asking if a home has space for a parent or grown child,” says a Connecticut Real Estate Brokerage LLC agent. “Ten or fifteen years ago, an in-law suite was a nice-to-have; now it’s frequently a must-have on the checklist.” This is a notable shift in buyer priorities.

Resale Potential: From a resale standpoint, Connecticut Real Estate Brokerage LLC emphasizes that homes designed for multi-gen living can have strong resale value and broad appeal. In many Connecticut neighborhoods, a house with a legal accessory apartment or a flexible floorplan will attract not only multigenerational families but also buyers looking for rental income or home office space. That means when it comes time to sell, the homeowner can market the property to a wider audience. “A house that has an independent suite – say a kitchenette, bedroom, bath with its own entrance – tends to generate a lot of interest,” the brokerage notes. They cite examples of recent sales where homes with “granny flats” or ADUs in Fairfield County fetched a premium because buyers recognized the future utility (renting it out, housing a nanny, etc.). In suburban and rural parts of Connecticut, big older homes (Victorian or Colonial farmhouses) that once might have been too large for a typical family are now finding new life as multigenerational homesteads for extended clans or even two family units buying together. The key for resale is flexibility – a property should be able to revert to single-family use or adapt to whatever configuration the next buyer needs. BIOS Homes’ modular designs, which can be reconfigured or even expanded with additional modules, play into this flexibility. The brokerage advises that when building or renovating for multigenerational use, owners should maintain the property’s versatility. That might mean keeping an interior connection (even if hidden or lockable) between an in-law suite and the main house, so a future owner can easily integrate the spaces. It also means adhering to code and getting proper permits for any separate living units, to ensure they add appraised value. In Connecticut, where zoning can be strict, having a properly permitted ADU or two-family classification can make a big difference in resale pricing.

Local Advocacy – ADUs: Connecticut Real Estate Brokerage LLC has been vocal in supporting legislative changes to accommodate modern housing needs. In a 2025 appeal, BIOS Homes (through the brokerage) urged Connecticut to “follow Rhode Island’s lead on ADUs” – highlighting the benefits of allowing by-right accessory apartments for seniors bioshomes.com. This advocacy underscores that Connecticut’s current zoning laws in many towns still make it difficult to create multigenerational living setups (e.g., strict single-family zoning, large lot size requirements). However, there is momentum in the state to enable more “Live-in Suites” and “Accessory Apartments.” Some towns have started pilot programs or relaxed rules for family-use only apartments. The brokerage’s commentary is that aligning regulations with the reality of aging and economic pressures is crucial: “We face a rapidly aging population and a housing crunch… ADUs are a compassionate approach that empowers families and makes smarter use of what we have,” they wrote bioshomes.com. If Connecticut fully embraces these changes, it could unleash a wave of garage conversions, basement apartments, and tiny homes in backyards – effectively increasing housing supply and options for families. For now, Connecticut Real Estate Brokerage LLC guides clients on a town-by-town basis, pointing out where in-law suites are allowed or where a multi-family property might be a better purchase than a single-family if multi-gen living is the goal.

Family-Focused Buyer Needs: In Connecticut’s relatively high-priced market, families want homes that they can grow into and stay in for decades. A multigenerational-capable home offers that longevity. The brokerage finds that family buyers often express a desire for a “forever home” that can accommodate aging parents in the future, even if they don’t need it on day one. They want peace of mind that they won’t have to move or add a costly extension later when mom or dad needs extra help. Likewise, parents of adult children are thinking about the unaffordability of starter homes in CT and preemptively choosing a home with space for their kids to stay post-college. Features like a first-floor bedroom suite, a second small kitchen or wet bar, a separate entrance, or a bonus room with en-suite bath can all signal multigenerational potential to these buyers. Connecticut Real Estate Brokerage LLC often counsels buyers on how a property could be modified to suit their family – sometimes bringing in BIOS Homes’ design team to sketch a modular addition or interior reconfiguration before the purchase. This integrated approach (brokerage + builder) helps families visualize making a traditional New England home into a multigenerational haven. The brokerage notes that even in terms of financing, multigenerational buyers behave differently: relatives might pool funds for a down payment, or a multi-gen mortgage may involve non-occupant co-borrowers (like adult children co-signing for their parents’ loan or vice versa). Lenders have started offering specialized programs recognizing income from accessory units, which further facilitates these arrangements.

In the Connecticut market, multigenerational living is thus not just a theoretical concept but a growing reality influencing how homes are built, bought, and sold. Connecticut Real Estate Brokerage LLC’s on-the-ground perspective confirms that local families value homes that offer flexibility, intergenerational support, and long-term adaptability. By providing designs and advocating for policies that support these needs, BIOS Homes and the brokerage are positioning themselves as leaders in the state for this housing segment – helping Connecticut residents find or create homes where grandparents, parents, and children can “live together, comfortably” in the same dwelling or on the same property. As one family-oriented client put it, “Knowing we have a place for Mom if she needs it, or that our kids can stay as long as they need to – that’s priceless. It makes our home truly feel like a family home.”

Conclusion: Housing for a New Age of Togetherness

The rise of multi-generational and co-living models marks a profound shift in housing, one that aligns with demographic reality and re-emerging social values. Driven by aging populations, economic constraints, and a renewed appreciation for familial and communal support, people across the globe are redefining the concept of home. No longer is the ideal home solely a nuclear family in a suburban house – it may be three generations sharing a suburban house, or four roommates sharing a city apartment, or an intentional community of seniors and students living under one roof. These arrangements, once viewed as alternative, are swiftly becoming mainstream. The numbers tell the story: multigenerational households are at their highest levels in half a century in the U.S.pewresearch.org, and a significant share of new home construction and purchases are catering to extended families nar.realtor. Around the world, innovative models like co-housing villages and modular multi-gen homes are demonstrating that living together can be both economically wise and socially fulfilling.

For builders like BIOS Homes, this moment presents an opportunity to lead with designs and solutions that answer the call. BIOS Homes has embraced the challenge, offering modular, flexible homes that make multi-generational living not just feasible, but enjoyable. By providing separate-yet-connected living spaces, adaptable layouts, and features for all ages, BIOS Homes enables families to thrive under one roof – sharing life while each generation still enjoys autonomy. The company’s commitment to affordability and sustainability further ensures these housing solutions are accessible and responsible. Connecticut Real Estate Brokerage LLC’s involvement adds another layer of leadership: by guiding local policy (such as advocating ADU-friendly laws) and educating buyers on the possibilities of multi-gen living, they are helping to pave the way for wider adoption of these models in their region.

Positioning for the Future: As generational and economic dynamics continue to evolve, the ability to adapt will be key. Multi-generational and co-living housing is essentially about adaptability – adapting our living spaces to fit our lives, rather than forcing families to conform to rigid housing formats. BIOS Homes is at the forefront of that adaptive, human-centered approach to homebuilding. The company is effectively saying: “We see you – the families with elderly parents, the couples with boomerang kids, the friends seeking community – and we will build homes that fit your needs.” By doing so, BIOS Homes is not only meeting market demand but also helping to normalize and celebrate new ways of living. In the coming years, success in real estate development will belong to those who recognize that the era of isolated living is yielding to an era of shared living. Companies that innovate for multi-gen and co-living arrangements will stand out as industry leaders. BIOS Homes intends to be among those leaders, demonstrating through each project that quality housing can evolve with the times.

In conclusion, “The Rise of Multi-Generational and Co-Living Models” is more than a trend – it is a return to the idea that home is a place for community, whether that community is one’s immediate family or a chosen extended family. It is a response to the pressures and possibilities of the 21st century, blending economic pragmatism with social connection. For buyers, investors, and developers alike, embracing this shift offers a chance to create and inhabit housing that is richer in relationships and smarter in design. BIOS Homes and Connecticut Real Estate Brokerage LLC are proud to be at the vanguard of this movement, crafting homes that not only shelter people, but also bring them together in meaningful ways. As the demand for multigenerational and co-living arrangements continues to grow, they stand ready to continue innovating – building houses that truly become homes for generations to come.

Sources:

1. Pew Research Center – “The demographics of multigenerational households” (2022): U.S. multi-gen household population and growthpewresearch.org

2. Pew Research Center – “Financial Issues Top the List of Reasons U.S. Adults Live in Multigenerational Homes” (2022): Trends, reasons and experiences of multigenerational living planetizen.com

3. Pew Research Center – “Majority of young adults in the U.S. live with their parents for the first time since the Great Depression” (2020): 52% of 18–29 year-olds living with parents amid COVID-19 pewresearch.org.

4. Apartment List / Mortgage Bankers Association – Study on young adults living at home (2024): Share of 25–35 year-olds living with parents rose from 7% in 1970 to 17% in 2022 themortgagepoint.com; affordability issues driving trend themortgagepoint.com.

5. National Association of Realtors – Home Buyers and Sellers Generational Trends (2024): Record 17% of home purchases are multigenerational (2023), up from 11% in 2021 nar.realtor.

6. Lennar Corporation – Next Gen® Housing Reports (2022–2023): Next Gen “home within a home” comprises 20–35% of Lennar’s sales in certain markets healthandliving.com, driven by adult children moving back (Gen Z rental challenges) healthandliving.com.

7. World Economic Forum / The Guardian – Coverage of Sällbo, Sweden (2020): Description of Sällbo’s intergenerational co-living experiment (72 residents 18–25 and 70+, required socializing 2 hrs/week) theguardian.com.

8. ArchDaily – “New Models for Collective Housing” (2024): Notes on global housing shortages, rise of single-person households and aging population prompting collective housing solutions archdaily.com.

9. ArchDaily – “Five Typologies of Multigenerational Family Homes” (2023): UK has 9 million multigenerational family dwellings (2020) archdaily.com; U.S. ~60 million people in multigen households (2021) archdaily.com.

10. United Nations – World Population Aging Highlights (2021): Global 65+ population projected to double from 761M (2021) to 1.6B in 2050 un.org.

11. Population Reference Bureau – “Fact Sheet: Aging in the United States” (2024): U.S. 65+ will increase from 58M (2022) to 82M (2050), growing from 17% to 23% of population prb.org.

12. AARP – Home and Community Preferences Survey (2021): 77% of adults 50+ want to remain in their homes as they age datastories.aarp.org.

13. CareScout Cost of Care Report (2024): National median cost of a semi-private nursing home room is $111,000+ per year carescout.com, making family caregiving/ADUs attractive bioshomes.com.

14. Generations United – “Family Matters: Multigenerational Living Is on the Rise” (2021): Over 26% of Americans live in multigenerational households (including 3+ generation setups) gu.org; promotes multi-gen living as eco-friendly gu.org.

15. Connecticut Data Collaborative – Analysis of 2020 Census: CT has 55,526 multigenerational households (3.9% of households), up 0.3% from 2010 patch.com, with increases in 130 of 169 municipalities patch.com.

16. BIOS Homes Blog – “Connecticut: Follow Rhode Island’s Lead on ADUs” (2025): Cites CT’s aging population, affordability crisis, need for multigenerational options; RI’s ADU law empowering families bioshomes.com

17. BIOS Homes Blog – “Accessible Affordable Housing for Seniors” (2024): Stat – By 2030, 1 in 5 Americans will be 65+ bioshomes.com; notes many seniors prefer to age in place but lack suitable homes bioshomes.com.

18. Sunwood Development – “Multi-Generational Homes in Connecticut” (2019): Reports 5.1% of CT households are multigenerational (Pew definition) sunwooddevelopment.com; discusses design considerations like in-law apartments and separate entrances sunwooddevelopment.com.

19. Health & Living Magazine – “Lennar’s Next Gen Homes Set Sales Record” (Mar 2023): In some AZ communities, Next Gen models hit 30–35% of sales healthandliving.com; Lennar increasing share of Next Gen in new developments due to demand healthandliving.com; ~48% of young adults 18–29 lived with parents in 2022 (Census) healthandliving.com.

20. Planetizen – “Multigenerational Households Increasingly Common in the U.S.” (2022): Summarizes Pew findings – multigen living quadrupled since 1971 to 59.7M people (18% of pop) in 2021 planetizen.com; 31% of ages 25–29 in multi-gen homes planetizen.com; 1/3 cite caregiving as a reasonplanetizen.com.