Co-Living Conversion: Zoning, Bathrooms, and Room Rents

A co-living conversion turns a four-bedroom house that rents for $650 a month as a whole unit into four rooms at $600 each. That is the arbitrage, and in small markets it is usually available — but only if the local occupancy ordinance lets you put more than two unrelated adults under one roof, and only if the house already has the bathrooms and parking to support four tenants.

Steven Borawski runs 16 doors in Northwest Ohio, around Tiffin, Fremont, Fostoria and Upper Sandusky. He converted one four-bed, two-bath house to rent-by-the-room after getting a co-living use approved with the city’s zoning department, and pulled 30 applications on the rooms.

This piece walks the sequence he used: the gross income math and what comes out of it, the zoning gate that comes before everything else, the buy box for candidate houses, how to spec the rehab for four users, how screening changes, and the carrying cost of a slow rehab.

From the Real Estate Pros Show

This article draws on an interview with Steven Borawski of Great Homes Ohio on the Real Estate Pros Show, hosted by Scott Bursey.

The Math That Makes a Co-Living Conversion Worth Doing

Here is the deal that proved it out. Borawski bought a four-bedroom, two-bath house from a retiring landlord with owner financing. The existing tenant was paying about $650 a month for the entire building, and the rent had not been raised in a long time.

He gave the tenant notice, rehabbed the house — bathrooms included — and re-rented it by the room at $600 per room, all utilities and Wi-Fi included. Four rooms at $600 against $650 for the whole building is roughly four times the gross rent on the same roof.

Two things keep that number honest. First, $600 is a gross figure with utilities and internet baked in, so your water, gas, electric and Wi-Fi bills come out of it, and they come out higher than a single-household bill because four adults are running them. Second, turnover is per-room rather than per-house, which cuts both ways: a vacancy costs you a quarter of the rent instead of all of it, but you have four times as many move-ins to process.

The demand signal mattered as much as the rent. He received 30 applications for those four rooms. In a rural factory market where new construction has been thin, the tenant profile was mostly men working long factory weeks who wanted a clean place to sleep while saving for a house of their own. He now gets inbound referrals from current residents asking whether he has anything else available, and he does not.

That is the real argument for the strategy in a small market: the rent spread is large, and the waiting list already exists.

Zoning Is the First Gate, Not the Last

Check the unrelated-occupants ordinance before anything else. In the city next to Borawski’s, the cap was two unrelated individuals in a dwelling. Under that rule, buying a four-bedroom to rent by the room is pointless — you can legally fill half of it, and the economics collapse back to something worse than a straight single-family rental.

These ordinances are common and they are not always obvious from a zoning map. A parcel can be correctly zoned residential, the use can be permitted, and the occupancy definition buried elsewhere in the code still blocks you.

Borawski did not walk away from the ordinance; he worked directly with the zoning department and got a co-living use approved. The argument that carried weight was local housing need. Ohio small towns are not building much new housing, and there is real demand for inexpensive, decent places for working people to live. Zoning staff know that. Showing up with a specific property, a specific layout, a parking plan and a stated resident profile is a different conversation than asking in the abstract.

Treat this as the single biggest obstacle to scaling the model. Borawski’s limit on expanding co-living into other cities is not deal flow or rent comps — it is bureaucracy, city by city. Each new municipality is a fresh approval process with its own parking questions and its own definition of a family.

Practically, that means two things: sequence zoning before inspection and before you price the rehab, and build your pipeline around the cities where you have already cleared the use rather than scattering across a county.

We went from $650 for the whole building to $600 for those four bedrooms, basically quadrupling what the property was bringing in. And the craziest thing was I got 30 applications for those rooms.

— Steven Borawski, Great Homes Ohio

The Conversion Buy Box: Bathrooms and Parking

Two physical filters decide whether a house is a candidate, and both are checked from the street and the listing photos before you ever walk it.

• Bathrooms. You cannot make a one-bathroom house work. Two is the minimum, three is ideal. Four adults on different shift schedules sharing one bathroom generates complaints, turnover and plumbing failures that erase the rent premium.
• Parking. The traditional single driveway where everyone stacks in behind each other does not work. Four residents with four vehicles and no way to leave independently is a daily conflict. Look for houses with on-street parking allowed or a side drive that lets cars park parallel rather than nose-to-tail.

Beyond those two, the stock itself favors conversion in older small-town markets. The large older homes in Borawski’s area routinely carry four and five bedrooms plus a dining room, a living room and a family room. Those extra common rooms are what make the layout work — you need somewhere for residents to be that is not their bedroom, and in a lot of these houses one of those rooms can become a fifth bedroom if the bathroom count supports it.

That stock is the reason the buy-and-convert path beats ground-up here. You are purchasing square footage and bedroom count that nobody would build new at these rents, in houses that are often distressed and cheap, and the conversion is mostly rehab rather than reconfiguration. Borawski’s current plan is explicitly buy-and-convert: find large existing houses that can accommodate at least four to five individuals, not develop purpose-built co-living.

Specifying the Rehab for Four Users Instead of One

The spec changes because the usage changes. One or two people using a kitchen and a bathroom is a residential load. Four unrelated adults on different schedules is closer to a light commercial load, and the finish schedule has to reflect that.

Borawski’s rule is durability over finish level. Specifically:

• Commercial-grade appliances and fixtures — stove, sinks, toilets. These are the items four people touch every day and the ones that fail first with standard residential grade.
• Two-by-two commercial carpet squares instead of broadloom or vinyl plank. When someone ruins one, you pop it up and slap another one down. No contractor, no room shutdown, no matching problem.
• Hallways and common areas get the heaviest spec, because that is where the constant traffic is.

The useful mental model is a hotel. Hotels are built for exactly this — strangers, constant turnover, hard use — and they are the right reference for what a co-living house needs. They are also not cheap to build out, which is the honest part of the tradeoff.

Durability costs more than standard rental-grade. Vinyl floor is cheaper up front than commercial carpet tile, and a residential stove is cheaper than a commercial one. What you are buying with the extra spend is fewer turns, fewer service calls on a property with four separate tenants capable of generating them, and the ability to replace a damaged component rather than a whole surface.

You do not need high-end. You need things that survive. Price the conversion rehab accordingly and do not underwrite it like a standard single-family refresh.

Screening Co-Living Tenants Against a Different Standard

Borawski runs two screening tiers, and they are strict in different places.

For standard single-family rentals, the credit bar is a 600 score. There is some flexibility around medical debt, since that arrives out of nowhere and can be enormous through no fault of the applicant. Unpaid credit cards and unpaid utilities are a different signal — those are a no, because they say the applicant cannot meet recurring monthly obligations.

For co-living rooms, credit is looser but conduct is not. Because residents share a kitchen, bathrooms and common space with strangers, the hard lines are:

• No recent eviction
• No vehicle repossession
• No violent offense in the background check
• Full-time employment, in every case, no exceptions

The logic is straightforward. In a whole-house rental, a weak tenant is your problem. In co-living, a weak tenant is three other tenants’ problem, and they will leave. Non-violence is non-negotiable precisely because people are living together.

One screening habit worth copying: note where each tenant works. In a rural factory market with no single dominant employer, plant openings and closures are the leading indicator for rent collection. Borawski watches local manufacturing news against his tenant roster. When one resident went two weeks late on rent, the conversation revealed he had been applying for jobs; Borawski pointed him at a company where another tenant had just been hired, he got the job, and the back rent came in.

That only works if you already know where your tenants work and you are paying attention to the local economy before the missed payment, not after.

The Cost of a Slow Rehab on a Conversion

Borawski’s most expensive lesson was not a bad purchase or a bad tenant. It was speed to rent.

His habit for years was to buy a rough house cheap and rehab it himself on nights and weekends, sometimes taking a year to finish. On a house that rents for $1,000 a month, that year costs roughly $12,000 in forgone rent — money that does not appear on any invoice and never shows up in the rehab budget.

That number reframes the DIY decision. Doing the work yourself saves labor cost, but if it stretches the timeline by months you are paying for those savings out of rent you will never collect. On a co-living conversion the stakes are higher, because the whole house is dark during the rehab and the stabilized rent is four times what a single-family rehab delivers.

He hit the threshold somewhere around 12 to 16 properties and brought on a part-time handyman at about 20 hours a week. The handyman absorbs painting and drywall — work Borawski dislikes and is not especially fast at — and routine maintenance tickets routed from the property management software.

He still does bathrooms himself, and the reason is arithmetic rather than stubbornness: contractor quotes in his market run $15,000 to $17,000 per bathroom, and after nine or ten of them he knows he can beat that. That is the right way to decide what to keep: a high-dollar line item where your own labor produces a large, provable spread, done fast enough not to eat the savings in lost rent.

Frequently asked questions

Do I need a zoning variance to rent a house by the room?

It depends entirely on your municipality, and you need to confirm it before you buy. Many cities cap the number of unrelated individuals who can occupy a dwelling — Borawski ran into a two-unrelated-persons limit in a city next to his, which makes renting four rooms impossible.

He resolved it by working directly with that city’s zoning department and getting a co-living use approved, arguing from local housing need. That approval process is city-by-city, so clearing one municipality does not clear the next one. This is not legal advice; verify your local code and talk to your own counsel.

How many bathrooms does a co-living house need to work?

Two at minimum, three ideally. A one-bathroom house cannot support four unrelated adults on different work schedules — it generates conflict, turnover and maintenance problems that wipe out the rent premium.

Bathroom count is one of two screening filters Borawski applies before touring a candidate house, alongside parking. A single stacked driveway where four residents block each other in is the other common dealbreaker.

What rent should I expect per room in a small rural market?

In Borawski’s Northwest Ohio market — Tiffin, Fremont, Fostoria, Upper Sandusky — rooms rent at $600 a month with all utilities and Wi-Fi included. For context, the same four-bedroom house rented as a single unit was bringing about $650 total.

Your number will depend on local wages and the competing whole-house rent. The useful test is the ratio: if one room rents for close to what the entire house rents for, the conversion is worth underwriting. Remember that an all-inclusive room rate means utilities come out of your gross.

Should I use different screening criteria for co-living tenants than for whole-house rentals?

Yes. Borawski runs a 600 credit score minimum on single-family rentals, with some flexibility for medical debt, while co-living applicants get more flexibility on credit score itself.

Where co-living gets stricter is conduct. No recent eviction, no vehicle repossession, no violent offense in the background check, and full-time employment in every case. Residents share a kitchen and bathrooms with strangers, so a problem tenant costs you the other three rooms, not just one.

Is a co-living conversion more expensive to rehab than a standard rental?

Yes, on finishes. Four people sharing one kitchen and two bathrooms is closer to commercial use than residential, so the spec moves to commercial-grade stove, sinks and toilets and to two-by-two carpet squares that can be replaced individually when one gets ruined.

That costs more than standard vinyl rental-grade material. The offsetting benefit is fewer failures and component-level repairs instead of full-surface replacement. Budget it like a small hotel buildout rather than a single-family refresh.

The bottom line

Before you underwrite another large older house, pull the municipal code on unrelated occupants and call the zoning department — that single call decides whether the rest of the math is worth running.