Does co-living ruin a neighborhood? Five myths, tested against the data.

Issue #027 | Friday, October 9, 2026 | thecolivinginsider.com

The Neighbors' Case, at Full Strength

Picture it from the other side of the fence. A letter shows up. The house two doors down just sold to an investor. Six, maybe eight unrelated adults are moving in on separate leases, sharing one kitchen.

The neighbor's fears are predictable, and they are not stupid. A family of four might own two cars; six working adults could own six. A family has one set of rules and two parents enforcing them; six strangers on separate leases answer to nobody in particular. And the house next door is probably that neighbor's single largest asset.

Here's what co-living advocates rarely admit: this has actually gone wrong. In 2007, the San Diego City Council unanimously changed its land-use code after landlords near the universities converted garages, attics, and other spaces into bedrooms and packed single-family homes with students. Neighbors complained about noise, parties, and trash. The city responded by requiring five-plus-bedroom homes near campuses to provide a parking space for every bedroom, and the city attorney pushed a separate ban on multiple rental agreements in the same house.

So the fear comes from real streets. The operator's question is whether that is what co-living is, or what bad co-living looks like. Forty years of research gives a surprisingly clear answer, with one exception you need to understand before you buy.

What the property value research actually says.

The biggest study came from NYU's Furman Center in 2008. Researchers tracked 123 supportive housing developments across all five boroughs over 18 years. Homes within 500 feet showed no drop in value when the buildings opened, then grew steadily relative to the rest of the neighborhood. Homes 500 to 1,000 feet away did dip at opening, then climbed back steadily. Supportive housing is a harder sell to neighbors than a well-run co-living home, and it still didn't sink values.

In suburban Salt Lake County, the University of Utah's Kem C. Gardner Policy Institute studied apartments built from 2010 to 2018. Homes within a half-mile of new apartment complexes appreciated about 10% a year at the median, versus 8.6% for homes farther away. Lead researcher Dejan Eskic concluded apartments had a positive impact on nearby single-family values. One honest footnote: southeast Salt Lake County was the exception, where farther homes slightly outperformed.

The closest analog to co-living is the Oxford House recovery model: six to twelve unrelated adults sharing a house and governing it themselves. DePaul University researchers (Jason, Roberts and Olson, 2005) found property values next to Oxford Houses were not significantly different from homes a block away, and neighbors living adjacent to the houses held more favorable views than neighbors farther away. Familiarity bred acceptance, not contempt.

Now the exception that should change how you buy.

One study cuts hard the other way. Colwell, Dehring and Lash (Land Economics, 2000) studied seven DuPage County, Illinois neighborhoods. Homes within 200 feet of a group home lost up to 24%, and homes within sight of one lost around 10.5%. Beyond 750 feet, the effect largely disappeared.

Look at when the drop happened: after the group home was announced, not after it opened. The authors suspected an initial overreaction but could not prove values recovered. The lesson for operators is blunt. The public fight can do more damage than the house itself. If neighbors first learn about you from a hearing notice or a rumor, you are already paying for it.

Small operator vs. larger operator: A single-home operator is one angry neighbor away from a code complaint campaign, so the neighbor relationship is existential. A 20-unit operator faces a different risk: reputation compounds across a city, and one bad house can become the exhibit at the council meeting that tightens rules for all your other houses.

Myth 1: Co-living tanks nearby home values.
Fact: The weight of the evidence says no. Furman, Utah, and DePaul all found no lasting harm, and in two cases nearby values outperformed. The DuPage exception was tied to the announcement, which is a communication problem you control.

Myth 2: Shared houses bring crime.
Fact: A 2013 DePaul study compared neighborhood crime around Oxford Houses with matched control homes and found no significant difference. Oxford House residents also give back: DePaul found they averaged about 10 hours a month of community activity.

Myth 3: Co-living means cars all over the street.
Fact: This one is half true, and pretending otherwise costs you credibility. A co-living house is not one household; it's six or eight. If every resident drives, six cars is six cars. The fix is a rule, not a statistic: count off-street spaces before you buy, and let that number cap how many residents with cars you accept. San Diego's per-bedroom parking rule is a useful stress test even where it isn't law.

Myth 4: Neighbors have no recourse when a shared house gets loud.
Fact: They have more recourse than they do with a family. If the family next door is loud, the neighbor has almost no leverage. If a co-living resident is loud, that resident is breaking a lease, and a professional operator can remove them. That only works if the neighbor can reach you, which brings us to the playbook below.

Myth 5: Federal fair housing law means cities can't stop you.
Fact: This one bites operators, not neighbors. In City of Edmonds v. Oxford House (1995), the Supreme Court ruled 6-3 that a city's definition of "family" is a family-composition rule, not a maximum occupancy limit, so it isn't exempt from Fair Housing Act review. But that protection runs through the FHA's disability provisions, which cover people in recovery. A house of unrelated working adults doesn't get that shield. And in Village of Belle Terre v. Boraas (1974), the Court upheld a limit on unrelated occupants 7-2, with Justice William O. Douglas writing:

That sentence is still good law. Check your local definition of "family" before you buy. This is not legal advice; verify with a local land-use attorney.

Your Next Resident Isn't Who the Neighbor Pictures

When a neighbor hears "co-living," they picture the San Diego mini-dorm. The actual demand is getting older, not younger.

Last month, Hoodline reported that Richmond, Virginia seniors are turning to roommates as rents outpace fixed incomes. The piece, drawing on Axios and Harvard's Joint Center for Housing Studies, notes that 58% of older U.S. renters were cost-burdened in 2023, and that platforms like Silvernest are now matching older homeowners with housemates.

The national numbers back it up. NAHB's analysis of Census data found 6.8 million households shared housing with unrelated adults in 2023, and householders 55 and older made up 30% of them. The 65-plus house-sharing population grew 2.7 times since 2005.

This is your strongest neighbor argument, and it isn't spin. A house of screened, employed adults, or of retirees splitting costs on a fixed income, is the opposite of a party house. Tell neighbors who actually lives with you. If you serve older adults or workforce tenants, say so in the first conversation. For operators building a 55+ segment, the full guest-type breakdown is at ralphpombo.com/guest-types.

The Three-Question Neighbor Playbook
Everything neighbors fear lives on the bad-operator side of the line: cars on the lawn, an owner nobody can reach, no rules, no screening. Everything the research measured lives on the good side. The house isn't the problem. The operator is.

So flip the conversation. A worried neighbor shouldn't ask how to stop you. They should ask three questions, and you should have answers before closing:

1. Where does every car go? Know your off-street count and your cap on residents with vehicles. Put the parking rules in the lease, not just the house rules, so you can enforce them. Buying near transit, jobs, and shopping lowers the number of residents who need a car at all.

2. Who do I call? Give adjacent neighbors a real phone number for a local manager, not a corporate inbox. For the single-home operator, that's often you. For the 20-unit operator, it's your property manager, and you need a written response-time standard they're held to.

3. What are the house rules? Quiet hours, guest limits, trash day, parking. Offer neighbors a one-page summary. It costs nothing and signals that someone is in charge.

Then do the thing the DuPage study says matters most: knock on doors before the neighbors read about you in a letter or a hearing notice. It is the cheapest insurance you will ever buy.

UPDATE: Washington's co-living law is now permanent code across the state

Jurisdiction: Washington State (Enumclaw example) Status: In effect; cities were required to comply by December 31, 2025

Since we covered Quincy's forced adoption in April, cities are locking in permanent rules. Enumclaw made its co-living allowances permanent on August 10 under Ordinance 2842, with one council member noting the city is already at the cap of what the state allows it to require.

That cap is the story. Under ESHB 1998, cities can't require more than 0.25 parking spaces per sleeping unit (none within a half-mile of major transit), can't impose stricter standards than other multifamily housing, and can't add extra design review. Important limit: it applies to lots zoned for six or more multifamily units, not single-family houses.

Outside Washington: watch this as the template. State preemption is how legislatures answer local NIMBY resistance.

The Co-Living Insider | thecolivinginsider.com | Issue #027 | Friday, October 9, 2026