You spent decades picturing the day the kids finally moved out and the house went quiet. Now that it’s here, a growing number of homeowners in their 60s and 70s are filling that quiet with someone else’s spare room instead of packing up their own moving boxes. Rather than trading the family house for a smaller condo or a senior community, they’re inviting a roommate in, and interior designers say it’s becoming common enough to change how new homes get laid out from the studs up.
A New Kind of Empty-Nest Household
The trend shows up front and center in the American Society of Interior Designers’ 2026 Trends Outlook report, an annual analysis the professional group publishes to track how shifting demographics reshape the built environment. Among its findings: baby boomers are increasingly skipping age-segregated retirement housing in favor of shared arrangements with a peer, and “urban ‘senior roommate’ models are gaining traction, particularly in high-cost cities,” according to the full report.
That’s a meaningful shift from the decades-old script, where downsizing meant listing the house, buying something smaller, and largely living alone or with a spouse. ASID frames the new approach as older adults seeking “dignity, adaptability, and connection, rather than age-based segregation.” In other words, they’d rather share a kitchen with a friend than eat alone in a facility built entirely around being 65-plus.
Why Roommates, Not Real Estate Listings
Part of the reasoning is financial. Splitting a mortgage, property taxes, and utility bills with another retiree stretches a fixed income further than either person’s Social Security check would alone, especially in expensive metro areas where even a modest condo can run well over $400,000. But ASID’s researchers point to something less transactional too: many boomers are “rethinking how and with whom they live” as they juggle their own aging alongside caregiving duties for even older parents or, in some cases, adult children who’ve boomeranged home. A live-in peer can mean a second set of hands, a second car in case of an emergency, and someone who notices if you don’t come down for coffee.
That combination of cost pressure and a hard look at what isolation actually feels like is different from the co-living trend among 20-somethings that got most of the media attention a few years back. This is happening in houses people already own, among people who raised families in them, and it’s driving genuine changes to the floor plan rather than just a spare bedroom with a lock on the door.
How Builders and Designers Are Responding
Trade coverage of the same ASID research, including a rundown from facility-management outlet FMLink, ties the living-arrangement shift to the same report section covering wellness, technology, and economic pressures reshaping how designers approach a house. Practically, that’s translating into requests interior designers say they’re fielding more often: a second primary-suite-style bedroom with its own full bathroom instead of a small guest room down the hall, sound-dampening between shared living spaces, a mini kitchenette or wet bar tucked into a den so two households under one roof aren’t constantly negotiating the main kitchen, and separate exterior entrances that let a roommate come and go without walking through someone else’s living room.
Most of it is simply a reshuffling of square footage that already exists in a lot of larger suburban homes, which is exactly why builders can respond to it without redesigning entire product lines. A three-bedroom house with an underused formal dining room and a bonus room over the garage is, with some cabinetry and a plumbing run, most of the way to a two-suite setup already.
If You’re Weighing It Yourself
If the idea of a housemate at 65 sounds more appealing than another decade of an empty house, the renovation math is usually smaller than people assume. Converting an existing bedroom and adjacent hall bath into a suite, adding a pocket door to separate a wing of the house, or running a second exterior entrance off an existing mudroom are all projects a general contractor can usually scope in an afternoon. The ASID report’s core message for anyone eyeing this path is less about construction and more about intent: designing for two adults who each want privacy and their own turf, not one primary household with an afterthought guest room.
