How Many Students Can Legally Share a House
Before you sign a lease with four friends, check one thing almost nobody checks: your city’s cap on how many unrelated adults may share one home. It is set by the zoning ordinance, not by the number of bedrooms — and in some college towns a rented house may legally hold only one or two people, whatever the listing advertises. We read the ordinance for 34 college towns and quoted each one.
Every figure below is quoted from the city’s own code or a city-published document, with the section named. Where we could not read the ordinance, we say so rather than guess — one town is still listed that way on purpose.
A rented house may hold only one or two unrelated adults
The strictest tier, and the one that catches students out. In several of these towns the cap is lower for a rental than for a house the owner lives in.
- Radnor Township, Pennsylvania — Villanova. 1 unrelated adult
A “family” may include only people related by blood, marriage or law, plus “one other individual not related to others in the housekeeping unit.” Separately, a licensed “student home” is capped at two students — and the township will refuse a license that would put more than two student tenants within 1,000 feet of another student rental. Villanova publishes the same rule on its own off-campus page. Zoning § 280-4; rental licensing § 226-7(E) - Mount Pleasant, Michigan — Central Michigan. 1 unrelated adult
A family is people related by blood, marriage, adoption or guardianship “plus not more than one person not so related”, or two people plus their children. The only way above that is “a functional family… which has received a permit from the City.” Rentals have been licensed and inspected annually since 1972. Zoning Ordinance, via the City’s rental-owner guidance - Kalamazoo, Michigan — Western Michigan. 2 in a rented house
“A non-owner-occupied, one-family dwelling unit may only be occupied by a family, or a maximum of two unrelated adults.” Three if the owner lives there, four in the duplex districts, six in RM-15C — the district the city wrote for neighborhoods near a university. Zoning Ordinance, Appendix A, Ch. 2 - Kent, Ohio — Kent State. 2 unrelated adults
A household unit is a family, or “(2) two unrelated individuals”, or a family plus one unrelated person. The third housemate does not just break a cap — it converts the house into a rooming house, a separate use class needing Planning Commission approval. The city says the same thing in plain words on its housing page. Codified Ordinances § 1102.03 - Bowling Green, Kentucky — Western Kentucky. 2 unrelated adults
A family is any number of related people, or “two unrelated people”, or two unrelated people and any children related to either of them. Fines run from $10 to $500, and “each day of violation” is a separate offense. Joint City-County Zoning Ordinance, Art. 8 § 8.2 - Harrisonburg, Virginia — James Madison. 2 in most rentals
The city publishes an occupancy table by zoning district that also differs by whether the owner lives there. As a rental it is two in U-R, R-1, R-2, R-6, R-7 and R-8, and four in R-3, R-4, R-5, B-1 and B-2. Owner-occupied raises R-1, R-2 and R-8 to three. Virginia law expressly lets cities enforce this. City tenant-rights page; Va. Code § 15.2-2286 - Allendale Township, Michigan — Grand Valley State. 2, or 3 in R-3 and R-4
The rule is not in the definition of “family” at all — it sits in a section headed “Residential occupancy regulations,” which is why it is easy to miss. Two people living as a single housekeeping unit are allowed wherever residential use is allowed; three are allowed only in the R-3 and R-4 districts. The unusual part is how that three is counted. Occupancy “shall never be greater than three when dividing the number of occupants by the number of housekeeping units within the development,” so a landlord cannot average five in one unit against one in the next. Zoning Ordinance § 3.15(B) - Baltimore County, Maryland — UMBC. 2 — a third makes it a rooming house
The county prints no plain headcount limit. Instead, a rented house occupied in its entirety by three or more adults who are not related to each other becomes a “boarding or rooming house,” which needs an annual county use permit and is allowed only for a detached house in a D.R. zone. Two details make this sharper than it sounds. The application is posted on the property for 15 days, and any interested person may demand a hearing before the Zoning Commissioner. And the presumption runs against the household: the owner carries the burden of proving that occupants are related, and any unrelated occupant is deemed to be there for compensation whether or not money changes hands. BCZR § 101.1; § 408B - Detroit, Michigan — Wayne State. 2 in the published code
Detroit’s zoning code allows two related people plus one unrelated, or two people not related to each other at all — and no more. The city enacted an amendment on 3 September 2025 raising the unrelated figure from two to four, but the code as published still prints two, because the online code is codified only through an ordinance adopted in June 2024. There is an escape hatch called a “functional family,” and it is worth reading before you count on it: it is capped at six, it must rest on a Fair Housing Act, ADA or RLUIPA bond, it needs written recognition from a city department before you occupy, and one of its conditions is that members “are not legally dependent on others living elsewhere” — which describes most undergraduates. Zoning § 50-16-201; § 50-12-157
Three, four or five unrelated adults
Still a real limit, and still lower than the bedroom count on plenty of student houses.
- Huntington, West Virginia — Marshall. 3 unrelated adults
Written as a kinship test rather than an “unrelated” one: “a group of four or more persons who are not within the second degree of kinship shall not be deemed to constitute a family.” That means cousins and in-laws count as unrelated here. Violation is a misdemeanor — $100 to $500, or up to 90 days, or both. Zoning Ordinance § 1315.02(F); penalty § 1367.03 - South Kingstown, Rhode Island — URI. 3 by right
More than three unrelated individuals is allowed only with a special use permit, and the standards attached to it are strict: at least 330 square feet per occupant, no more than two people per bedroom, and one parking space each. The zoning board’s own dockets show landlords applying for six. Zoning Ordinance Art. 5 § 504.14 - DeKalb, Illinois — Northern Illinois. 3 or 4 — it depends which side of the street
Three unrelated people east of Normal Road and the Kishwaukee River, four west of them. Normal Road runs along the university, so two otherwise identical houses a block apart hold three and four tenants legally. Fines reach $750, and each day is a separate offense. Unified Development Ordinance, Art. 3 § 3.01, “Household” - Columbia, Missouri — Missouri. 3 in R-1, 4 elsewhere
Three unrelated people in R-1 and in low-density planned districts, four in the rest. Columbia is the only town here that makes the landlord print the occupancy limit in the lease itself, on new and renewal leases. A revision that would allow four citywide has been through public comment but is not adopted. Unified Development Code § 29-1.11 - Buffalo, New York — University at Buffalo. 4, or more if you qualify
“up to four individuals not related by blood, marriage, or adoption living together; or more than four… who meet the criteria for a functional and factual family equivalent.” That escape clause is not decoration — New York’s courts struck down flat caps without one. Buffalo also publishes its rental registry as an open dataset. Unified Development Ordinance § 2.2 - Oxford, Mississippi — Ole Miss. 3, and never more than the bedrooms
Oxford keeps this rule outside the zoning code, in a chapter titled “Number of unrelated occupants in residential structures.” In most detached-housing districts “occupancy may not exceed the number of bedrooms, but in no case more than three persons”; four in the NR, SMF, SCN and SCO districts and in attached or multi-family housing anywhere. A two-bedroom house is capped at two. Code of Ordinances § 87-61(b) - New Britain, Connecticut — Central Connecticut State. 3, and only with a permit
“A group of not more than three (3) unrelated persons living and cooking as one house keeping unit may be considered a family.” The housing code then requires an unrelated group permit before three students may share a unit — it names every person in the group and is void the moment the group changes. Only the owner is fined. Zoning § 30-20-210; housing code § 13-90(f) - Kennesaw, Georgia — Kennesaw State. 3 — unless it is purpose-built
“not more than three (3) persons not related, occupying a dwelling and living as a single housekeeping unit, as distinguished from persons occupying a boardinghouse, rooming house, hotel, or Purpose Built Student Housing.” Purpose-built student complexes that lease by the bedroom are carved out of the cap. An ordinary rental house is not. Unified Development Code § 1.09.02 - Milwaukee, Wisconsin — UW-Milwaukee. 3 — but never written as a cap
Milwaukee’s “family” definition carries no number. The limit arrives sideways: a unit occupied by “more than 3 persons who are not a family” becomes a rooming house, which is not allowed in any residential district. A separate rule is stricter still — “Not more than 2 roomers shall be permitted in any dwelling unit.” MCO § 295-201-511; § 295-503-3-e - Memphis, Tennessee — Memphis. 4 unrelated adults
“a group of not more than four persons who are not related by blood, marriage, or adoption, living together as a common household in a dwelling unit.” Worth knowing who is on the hook here: the penalty clause reaches “any other person who may have knowingly assisted” in the violation, so a housemate is exposed, not only the landlord. Unified Development Code § 12.3.1; penalty § 11.1.A - Salt Lake City, Utah — Utah. 3 — set by the state, not the city
Three unrelated people, or two unrelated people and their children. The number is not Salt Lake City’s choice: Utah law bars a city from setting a single-family limit below three if a state university sits inside its boundary, and four everywhere else. The University of Utah is the reason this city sits on the stricter tier. A petition to remove the limits entirely is before the City Council. SLC Code § 21A.62.040; Utah Code § 10-9a-505.5 - Akron, Ohio — Akron. 5 unrelated adults
“A ‘family’ shall include a group of not more than five individuals unless all are related by blood, or marriage, or by adoption.” The highest cap of any town on this page. The same figure governs roomers: a rooming-house unit’s roomer count “is regulated by the definition of family.” Zoning Code § 153.140(45) - Lubbock, Texas — Texas Tech. 3 — though the city’s own page says 2
Lubbock’s code defines a family as people related by blood, adoption or marriage, “or not more than three unrelated persons living and cooking together as a single housekeeping unit.” The city’s own Codes page, under a heading about more than two unrelated persons in a home, quotes that same definition with “two” in its place. The website is stricter than the law, by one person. Lubbock is also the Texas college town the 2025 state ban does not reach: it applies only to home-rule cities under 250,000 people, and Lubbock’s 2020 census population was 257,141. Code § 39.10.002 - Ypsilanti, Michigan — Eastern Michigan. 5, with room sizes attached
A group of people none of whom are related may share a dwelling provided the total “shall not exceed five.” A related family may add up to three unrelated boarders on top of itself, plus two live-in domestic workers. Then Ypsilanti does something no other town on this page does: it attaches room sizes to the number. The living room must be at least 120 square feet, the dining area 80, and a sleeping room 70 square feet for one person plus 50 more for every additional person in that room. And the alternative “single housekeeping unit” route names students out of it in terms — it excludes any “group of students or other individuals whose domestic relationship is of a transitory or seasonal nature or for an anticipated limited duration of a school term.” Zoning § 122-203
No limit on unrelated adults
In these towns the cap was repealed, struck down, or never written. That is worth knowing too — it means a five-bedroom house can legally hold five students.
- Seattle, Washington — Seattle University. No cap
Washington State barred cities from limiting the number of unrelated people in a household, and Seattle repealed the section that used to allow eight. Former SMC 23.44.041, repealed - Bellingham, Washington — Western Washington. No cap
The old “not more than three unrelated persons” definition is gone; a household is now simply “an individual or collection of individuals occupying the entire dwelling unit.” BMC 20.08.020 - Eugene, Oregon — Oregon. No cap
The residential occupancy section was repealed in stages between 2022 and 2025 and not replaced. There is now no relationship-based occupancy rule in the code at all. Former EC 9.2737, repealed - Knoxville, Tennessee — Tennessee. No cap
Knoxville’s 2020 rewrite deleted the definition of “family” outright. The current zoning ordinance defines neither “family” nor “household”, and the word “unrelated” does not appear in it. Zoning Ordinance, Art. 2.3 Definitions - Glassboro, New Jersey — Rowan. No number
No count at all — just a functional test for a “group of unrelated individuals living together… on a fairly stable, rather than transient, basis.” Glassboro polices density instead with a five-bedroom ceiling on single-family houses and occupant-by-name rental registration. Ch. 107 § 107-3C - Montclair, New Jersey — Montclair State. No cap, but only 2 boarders
No limit on unrelated adults sharing as a household. There is one sub-limit: a family household may include “no more than two boarders or roomers who are tenants of the family occupant.” Ch. 347 § 347-2 - New Brunswick, New Jersey — Rutgers. No number
Title 17 carries no definition of “family” at all. A household is “one or more persons who live together in one housekeeping unit on a non-seasonal basis… and who intend to be considered and who in fact consider themselves as a family.” No count appears anywhere in the zoning title — which is what you would expect in New Jersey, where counting unrelated individuals was held unconstitutional in 1979. Zoning § 17.02.020 - College Station, Texas — Texas A&M. No cap — repealed in 2025
College Station used to cap a single-family dwelling at four unrelated people, and let neighbourhoods adopt a Restricted Occupancy Overlay that cut it to two. On 11 September 2025 it repealed both, in its own words “in compliance with Senate Bill 1567.” The repeal is complete in the code: the word “unrelated” does not appear anywhere in the current development ordinance’s definitions, and the overlay districts are gone. If you find a page quoting a four-person rule, a Restricted Occupancy Overlay, or penalties of $250 to $500, you are reading something that was repealed. Ordinances #2025-4619 and #2025-4620; UDO Article 11 - Denton, Texas — University of North Texas. No enforceable cap — but the code still prints four
Denton is covered by the same 2025 state ban as College Station, and has been since 1 September 2025. Its published code has not caught up. The definition of “overcrowding” still reads: “No single dwelling unit shall have more than four (4) unrelated individuals residing therein, nor shall any family, as herein defined, have more than four (4) unrelated individuals residing with such family.” That text is in the code as supplemented through ordinances adopted in March 2026, so this is not a publisher lagging behind a city — it is a rule left on the books that state law bars the city from enforcing. Code of Ordinances § 17-2 - San Antonio, Texas — UTSA. No cap
The Unified Development Code defines a family as “one (1) or more persons occupying a dwelling living together as a separate housekeeping unit” — no relationship test and no headcount. In the whole definitions appendix the word “unrelated” appears only in the rules for assisted living, group homes and nursing facilities. The one limit worth knowing runs the other way: the definition expressly excludes a college fraternity or sorority, so a chapter house is a different use even though ordinary roommates are not. San Antonio is too large for the 2025 state ban to apply to it — it simply never had the rule. UDC § 35-A101
Check this one locally — we still cannot read the regulations
One town where we will not print a number. Three others sat in this section until we opened their codes in a real browser instead of a fetcher — Akron, New Brunswick and Oxford have all moved up into the lists above. This one has not. Ring the town and ask.
- Fairfield, Connecticut — Fairfield. Not verified
The only wording we could read is a court’s 1999 quotation of a Beach District rule — “no dwelling or dwelling unit in the Beach District may be occupied by more than four (4) unrelated persons” — and the town’s current regulations could not be opened to confirm it still reads that way, or whether it applies anywhere else in town.
The law here is moving, and not all of it in the same direction
This is not a settled area, which is exactly why a listing site will never tell you the answer. Four patterns are worth understanding before you rely on anything you read.
Some states have taken the power away. Washington barred its cities from limiting the number of unrelated people in a household, which is why both Washington towns on this page now have no cap. If you are renting in a state that has done this, the number in an old city document is not the law.
Some state courts struck the caps down. New Jersey’s Supreme Court did it in 1979, holding that counting unrelated individuals cannot survive constitutional review. New York’s courts did much the same to flat caps in the 1980s — which is why Buffalo’s ordinance carries that “functional and factual family equivalent” escape clause. It is there to keep the rule alive.
And some states expressly allow them. Virginia’s code specifically authorizes enforcing occupancy limits on single-family dwellings. Pennsylvania’s courts have upheld a three-unrelated-persons definition applied to student rentals. In those states the number on the page is the number.
One city proves occupancy by counting cars. Oxford, Mississippi sets out how it establishes a violation: “Prima facie proof of occupancy of a dwelling unit by more than three unrelated persons is established… if it is shown that the same four or more vehicles with registration to persons having different surnames or addresses were parked overnight at the dwelling unit a majority of nights in any 14-day period.” Oxford also makes it a violation for an “owner, occupant, or lessee” to permit over-occupancy — so there, unlike in most towns here, the tenant is personally on the hook. Memphis reaches housemates too, through a clause covering anyone who “knowingly assisted” in the violation.
And one state sets the floor rather than removing it. Utah bars its cities from setting a single-family limit below three where a state university sits inside the city, and below four everywhere else. Salt Lake City is capped at three because the University of Utah is within its boundary — a statute written so that university towns can be stricter than the rest of the state, which is the opposite of what Washington did.
There is a neat irony in the New Jersey line of cases. The 1990 decision that set the standard for what counts as a “family” was Borough of Glassboro v. Vallorosi — and the household in question was ten students from the college that is now Rowan. The court held they were a family. Glassboro appears on this page today with no numeric cap at all.
And one state has just written a ban aimed at college towns specifically. A Texas statute in force since 1 September 2025 bars a city from limiting how many people may occupy a home based on age, familial status, occupation, relationship status or degree of relation — but only in a home-rule city of under 250,000 people that hosts or adjoins a campus of more than 20,000 students. It is the most narrowly aimed law of its kind we have found: it describes college towns and nothing else. What survives is a floor-area test, roughly one occupant per sleeping room of at least 70 square feet with more space required for each additional person — the same shape of rule Ypsilanti already writes voluntarily. Two provisions give it teeth. A city may not require a broker or agent to hand over a lease in order to count the unrelated occupants, and an owner or tenant may sue over a violation, with attorney’s fees mandatory if they win.
And one city has moved the other way. Detroit’s limit of two unrelated adults was among the strictest of any large American city. In September 2025 the city enacted an amendment raising it to four. Every other movement on this page runs toward repeal, by statute or by court — Detroit is the one place that chose to relax its own rule while keeping it.
Michigan deserves one more sentence, because five towns here are in it. In 1984 the Michigan Supreme Court struck down a township ordinance limiting unrelated occupants, on state constitutional grounds, in Charter Township of Delta v. Dinolfo. That case concerned a township, its reach over home-rule cities is contested, and we have found no decision applying it to Kalamazoo or Detroit. These ordinances are on the books and cities do enforce them. But it belongs beside the New Jersey and New York cases as a reason not to treat a printed number as the last word.
Seven places are still publishing rules that are not the law
This is the part worth being careful about, because the stale page is usually easier to find than the current code.
- Seattle. A city renting-information page still tells residents that single-family zoning permits up to eight unrelated people, and cites the section by number. That section has been repealed.
- Bellingham. The city’s own page reviewing its family definition still quotes the old “not more than three unrelated persons” wording. The current code does not contain it.
- Denton. The city’s code still contains a four-unrelated limit that Texas law has barred it from enforcing since September 2025 — and that code is supplemented current to March 2026, so what is stale here is the rule itself, not an old web page.
- Detroit. The opposite error. The city raised its limit from two to four in September 2025, but its online code is codified only through an ordinance adopted in June 2024 and still prints two. Again the stale document is the code.
- Lubbock. The city’s Codes page quotes its own family definition with “two unrelated persons” where the code itself says “three.” Not an out-of-date rule — a city misquoting its own current law, in the stricter direction.
- Knoxville. An archived planning document still publishes limits of three people in some districts and five in others, along with a “functional family” concept. The current ordinance has none of it.
- UW-Milwaukee. The university’s own off-campus FAQ tells students “it is illegal for more than 3 unrelated people to live in the same unit.” Milwaukee’s code never says that as a flat rule — it gets there through the rooming-house definition — and the FAQ leaves out the stricter rule that actually bites, a limit of two roomers per dwelling unit.
None of these is a trap laid for anyone — cities are slow to retire old pages. But it means the sentence you find first may be years out of date, in either direction. Check the code section itself, and check whether it has been repealed.
They do get fixed, though, and sometimes quickly. When we read College Station’s housing pages in September 2026, one of them was still publishing the four-person rule the city had repealed a year earlier, complete with the penalties and a presumption drawn from how many cars were parked outside overnight. Within the week that page was gone. That is the argument for checking the date on whatever you are reading — and for reading the code rather than the guide to it.
How to check your own address in ten minutes
- Find the zoning district for the exact address. Most of these cities publish a parcel or zoning lookup where you type an address and get the district back. The cap often depends on the district, and sometimes on nothing else.
- Read the definition of “family” or “household” in the zoning code, not the occupancy section of the property-maintenance code. Those are two different rules: one counts relationships, the other counts square feet and bedrooms. You have to satisfy both.
- Check whether the owner lives there. In Kalamazoo, Mount Pleasant and Harrisonburg the answer changes the number.
- Check the rental license or certificate. Several of these cities publish a search where you can confirm a rental is registered and current. An expired certificate is a problem that lands on the tenant.
- Ask the planning office directly if anything is ambiguous, and ask before you sign rather than after. A lease for more people than the zoning allows is the landlord’s problem legally and your problem practically.
One thing this page deliberately does not do is tell you whether your particular group would qualify as a “family” under a functional test. Several of these ordinances have one, and they turn on stability and permanence — Kalamazoo’s expressly excludes groups whose living arrangement is “of a transitory or seasonal nature”. No one can tell you in advance how a city will apply that to a nine-month lease. Anyone who gives you a confident answer is guessing.
Where these figures come from
Every number above was read from a city ordinance, a city-published PDF, or a city web page, in September 2026. Where a city publishes its code only through a viewer that serves no text, we say the figure is unverified rather than reproduce one from a secondary source. Court decisions are named so you can look them up yourself.
Zoning changes, and it has been changing quickly in this particular corner of the law. Treat this page as a starting point and the city’s own current code as the authority. If you find something here that is out of date, tell us and we will fix it.
Elevate My Dorm publishes what universities and cities actually print — including the places where they contradict themselves or publish nothing at all. You can also check what bed size your school publishes and whether your school requires you to live on campus.