A Brampton landlord rents a four-bedroom house to seven adults and assumes that is fine because “two per room” is normal. A Mississauga owner rents out a fourth room to cover the mortgage. A Toronto buyer looks at a listing marketed as an “8-bedroom income property”. All three are making decisions that depend on rules most people have never read.
The short answer: no GTA city sets a simple maximum number of people per house, and Ontario law does not allow cities to limit a household because its members are not related. What the cities do limit is space per person and how rooms are rented. Toronto and Mississauga cap a home at one person for every 9 m² (about 97 sq ft) of habitable floor area. Brampton sets minimum bedroom sizes, including 14 m² for three adults and 7 m² per adult for four or more. And once separate tenants rent separate rooms past a certain number, the house becomes a lodging or rooming house that needs its own licence.
Rules checked October 11, 2026, against each City’s by-laws and official pages. Sources are listed at the end.
Quick answer
| Rule | Brampton | Mississauga | Toronto |
|---|---|---|---|
| Whole-house limit | No set number | 1 person per 9 m² of habitable floor area | 1 person per 9 m² of habitable floor area |
| Smallest legal bedroom | 7 m² (6 m² with built-in closet) | No bedroom minimum in the property standards. Habitable rooms must be at least 4.5 m² | 6 m² for one person, at least 2 m wide |
| Bedroom shared by several people | 3 adults: 14 m². 4 or more adults: 7 m² each | Covered by the whole-house limit | 4 m² per person |
| When renting rooms needs a special licence | More than 4 tenants renting separate rooms (lodging house) | More than 3 lodging units (lodging house, maximum 4) | 4 or more rooms rented to people who are not one household (multi-tenant house) |
| Can a city limit “unrelated” people? | No. Ontario’s Planning Act bars zoning that distinguishes related from unrelated occupants | ||
Check your house: occupancy calculator
Enter each bedroom’s size and who sleeps there. The calculator checks the bedroom rules for your city, the whole-house limit in Toronto and Mississauga, and whether the way you rent triggers a lodging or rooming house licence.
Room sizes in feet. Habitable floor area excludes bathrooms, hallways, closets, stairs and laundry. 1 m² = 10.76 sq ft.
The calculator is a planning tool, not an inspection. It does not check ceiling height, windows, fire separations, egress, permits or zoning, all of which also apply.
Why there is no “maximum family size” in Ontario
Many people assume a city can say “no more than five unrelated people”. In Ontario it cannot. Section 35(2) of the Planning Act says a zoning by-law cannot distinguish between people who are related and people who are not. The Ontario Human Rights Commission has made the same point for years: zoning should regulate how land is used, not who lives there.
Brampton says this plainly on its own shared accommodation page: the City cannot regulate based on who lives together or their relationship, only on how the property is used. So the rules you will see below are about floor space, building safety and how rooms are rented. A family of nine and nine roommates are treated the same way if they live in the same space under the same arrangement.
Brampton occupancy rules
Bedroom sizes
Brampton tightened its Property Standards By-law 165-2022 with By-law 3-2025, which took effect January 22, 2025. Under section 24.1, no room can be used for sleeping unless:
- It was built under a building permit and reviewed for sleeping, and meets the Ontario Building Code requirements for a bedroom
- It has at least 7 m² (about 75 sq ft) of floor area, or 6 m² (about 65 sq ft) if it has built-in closets
- It has at least 14 m² (about 151 sq ft) if three occupants share it
- It has at least 7 m² per person if four or more occupants share it
For the three-person and four-person rules, “occupant” means someone 18 or older. Children are not counted toward those thresholds, although any room a child sleeps in must still meet the other standards.
There is no Brampton cap on the number of people in the house as a whole. The limit comes from the bedrooms: three adults cannot legally share a typical 10 by 11 foot room (about 10.2 m²), because it is under 14 m².
Rooms that can never be bedrooms
Section 24.3 bans sleeping in a cellar, lobby, hallway, closet, bathroom, laundry room, stairway, kitchen, garage, shed or other accessory building. Section 24.2 says no room can be converted to a bedroom without a building permit. That covers the most common overcrowding tactic in Peel: turning a living room, dining room or den into another rentable bedroom. Cooking appliances are also banned in any room used for sleeping.
When a shared house becomes a lodging house
Brampton separates shared housing into types:
| Arrangement | What it means | What you need |
|---|---|---|
| Single housekeeping unit | One group shares the whole house, signs one lease, pays rent and utilities together and makes decisions together | A Residential Rental Licence if it is rented |
| Co-living | Up to 4 tenants renting separate rooms and sharing common areas | A Residential Rental Licence |
| Lodging house | More than 4 tenants renting separate rooms | Zoning approval, a change of use permit, Building and Fire Code upgrades, and a lodging house licence |
A lodging house licence costs $407 a year and needs a fire approval letter and fire safety plan, an occupancy certificate for the change of use, Peel public health approval, an electrical safety inspection, a property standards approval and an HVAC report. Licensed lodging houses are inspected every year. The City notes the building work often includes fire-rated walls and doors, two exits per floor and interconnected smoke alarms, so a regular house cannot become a lodging house simply by renting more rooms. Brampton paused its broader lodging house review, so these rules remain in place.
Brampton fines
| Violation | Penalty |
|---|---|
| Bedroom occupancy violation, first offence | $500 |
| Second offence | $750 |
| Each later offence | $1,000 |
| Building extra bedrooms without a permit (administrative penalty) | $250 to $1,250 |
| Renting without a Residential Rental Licence | $750, then $1,250, then $1,500 |
| Failing a fire safety inspection (user fee) | $3,000, then $5,000, then $10,000 |
In December 2025, Council also asked staff to assess bedroom limits in additional residential units. That is a direction to study, not a rule in force. Our Brampton rental licence guide covers the licence every Brampton landlord now needs.
Mississauga occupancy rules
The 9 m² rule
Mississauga’s Property Standards By-law 654-98, section 42(2), says the number of people living in a dwelling unit cannot exceed one person for each 9 m² of habitable room floor area. A habitable room is one used for living, including bedrooms and the kitchen. Lobbies, hallways, closets, bathrooms and any room smaller than 4.5 m² do not count.
In practice: a house with 110 m² (about 1,180 sq ft) of habitable rooms can hold up to 12 people. Mississauga’s rule applies to everyone, including children.
Renting rooms separately: lodging houses
Mississauga’s Residential Rental Accommodation Licensing By-law 0172-2010 defines a lodging house as a dwelling unit with more than three lodging units, meaning rooms rented separately. A lodging house:
- Can have no more than four lodging units, each occupied by one person
- Is allowed only in a detached house
- Cannot have any lodging unit in the basement
- Can use no more than 40% of the residential floor area for lodging units
- Cannot have any sleeping room smaller than 80 sq ft (7.4 m²)
- Needs a licence and a certificate of occupancy confirming the use under the Zoning By-law
Renting up to three rooms separately is below the threshold. Five or more separate rentals is a rooming house, which the City has said is not permitted. In 2022, Mississauga told insauga it had no licensed rooming or lodging houses at all. In May 2025, Council directed staff to design a lodging house pilot for Ward 5. Until a pilot is approved, the rules above apply.
Fines under the licensing by-law can reach $25,000 for an individual and $50,000 for a corporation. Orders under the property standards by-law are enforced through the Building Code Act, where an individual faces up to $50,000 for a first offence.
Toronto occupancy rules
The 9 m² rule and bedroom sizes
Toronto’s Property Standards (Municipal Code Chapter 629) uses the same 9 m² measure. Section 629-25C limits the number of people to one for each 9 m² of habitable room floor area. Toronto also sets bedroom sizes:
- A room used by one person: at least 6 m² (about 65 sq ft), with one side at least 2 m (6 ft 7 in) long
- A room used by two or more people: at least 4 m² (about 43 sq ft) per person
- Floor area under a ceiling lower than 1.4 m does not count
- A habitable room needs a ceiling at least 1.95 m high over at least half its floor area
Basement and cellar space cannot be used as a dwelling unit or habitable room unless it is otherwise permitted and meets the egress, light, ventilation and ceiling height requirements.
Multi-tenant (rooming) houses
Since March 31, 2024, multi-tenant houses are permitted across Toronto. A multi-tenant house has four or more rooms rented to people who do not live as a single household. Each needs a City licence:
| Item | Toronto rule |
|---|---|
| Rooms allowed | Up to 6 in every neighbourhood. In the former Toronto, East York and York, 12 or 25 in some zones |
| Bathrooms | At least 1 per 4 rooms |
| Parking | None in the former Toronto and parking policy areas. Elsewhere 1 space per 3 rooms, rounded down |
| Licence fee | $27.04 per room, plus a $162.24 inspection fee |
| Fire safety | An approved Fire Safety Plan if there are more than 4 tenants |
| Fines | Tickets of $400 to $600 (operating without a licence: $600). Up to $100,000 on conviction |
Fewer than four separately rented rooms is not a multi-tenant house. A house rented to one group as a single household is not one either, no matter how many people live there, as long as the space rules are met.
Three real-world scenarios
Scenario 1 (hypothetical): seven adults in a Brampton four-bedroom
Raj owns a detached house in Brampton with four bedrooms upstairs: a 13 by 12 foot primary (14.5 m²) and three rooms of about 10 by 10 feet (9.3 m²). He wants to rent the upstairs to seven students on one lease.
- Three students in the primary bedroom: allowed, because 14.5 m² is over the 14 m² minimum for three adults.
- Two in each of two smaller rooms: allowed, since a two-person room only needs 7 m².
- That is seven adults in three rooms, leaving the fourth room for one more if he wanted. Splitting two-plus-two-plus-two-plus-one also works.
- Because the students share one lease and the whole house, this is a single housekeeping unit, not a lodging house. Raj needs a Residential Rental Licence, $2 million in liability insurance and working smoke and CO alarms.
- If he instead rented five rooms to five strangers on separate leases, it would be a lodging house, which needs zoning approval and a licence.
Scenario 2 (hypothetical): renting a fourth room in Mississauga
Mei lives in her detached Mississauga home and rents three bedrooms to three separate tenants. That is under the lodging house threshold. When a friend asks to rent the basement den as a fourth room, the answer changes twice:
- A fourth separately rented room makes the house a lodging house, which needs a licence and zoning confirmation.
- Even with a licence, a lodging unit cannot be in the basement.
The legal way to add basement income is a registered second unit, a self-contained apartment with its own kitchen and entrance. Our guide to registering a second unit in Mississauga explains how.
Scenario 3 (hypothetical): buying an “8-bedroom income property” in Toronto
A North York house is listed with eight bedrooms rented separately. Before making an offer, a buyer should know:
- Eight separately rented rooms is a multi-tenant house. In North York, the maximum is six rooms, so two rooms of income are not legal under that model.
- The house needs a multi-tenant licence. Ask the seller for it, and for the Fire Safety Plan approval.
- Check that each bedroom was created with a permit and meets the 6 m² and 2 m width minimums.
- Lenders and insurers will look at the legal income, not the advertised income. Value the property on the rents it can lawfully earn.
Common mistakes that cost landlords money
- Counting bedrooms instead of floor area. “Two per bedroom” is not a rule anywhere in the GTA. A small room may legally hold only one adult, and a large one may hold three.
- Turning a living room or den into a bedroom. Without a building permit it is not a legal bedroom in Brampton, and it is the first thing inspectors look for.
- Renting “just one more room” separately. One extra lease can move a house from a regular rental into a lodging or rooming house, with a completely different set of building, fire and licensing rules.
- Assuming a family-only rule exists. Telling a group of friends they cannot rent because they are not a family is not supported by Ontario law and can raise human rights issues.
- Removing tenants to fix the problem. If a house is over the limit, the landlord still has to end tenancies through the Residential Tenancies Act and the Landlord and Tenant Board. Brampton’s by-law requires remedial work to minimize the impact on tenants.
What this means for property value, financing and resale
- Rental income: value a rental on the income it can lawfully produce. An income figure that depends on an illegal bedroom or too many separate leases can disappear after one complaint.
- Insurance: tell your insurer exactly how the house is rented. A policy written for a single family or a standard rental may not respond the same way for a house rented room by room.
- Mortgages: lenders usually look for legal, documented rental income. Unregistered units and unlicensed lodging arrangements are hard to finance.
- Resale and due diligence: buyers increasingly ask for permits for every bedroom, the rental licence and any lodging or multi-tenant licence. Missing paperwork turns into a price conversation.
- Renovation costs: converting a house into a legal lodging or multi-tenant house usually means a change of use permit and fire upgrades. Get a designer or contractor quote before you count on the income.
Looking at a house with rental potential? Our team can help you check what a property can legally earn before you make an offer. Start with a free home evaluation or browse Brampton homes for sale.
How to check your own property, step by step
- Measure each bedroom wall to wall and multiply length by width. Divide square feet by 10.76 to get square metres.
- Add up the habitable rooms (bedrooms, living, dining, kitchen, family room) for the 9 m² rule in Toronto and Mississauga. Leave out bathrooms, halls, closets, stairs and laundry.
- Confirm each bedroom had a permit. Ask the City for permit records, or check your closing documents and any registration certificate for a second unit.
- Decide how you rent. One group on one lease, or separate leases per room. Count separate leases carefully against your city’s threshold.
- Get the right licence. Brampton: Residential Rental Licence for any rental, lodging house licence above four separate tenants. Mississauga: lodging house licence at four separate rooms. Toronto: multi-tenant house licence at four or more rooms.
- Check fire safety. Working smoke alarms on every storey and outside sleeping areas, CO alarms near bedrooms where there is a fuel-burning appliance or attached garage, and a Fire Safety Plan where required.
- Ask the City if unsure. Brampton: 311 or enforcement@brampton.ca. Mississauga: 311 (905-615-4311 outside the city). Toronto: 311 (416-392-2489 outside the city).
Frequently asked questions
How many people can live in a 3-bedroom house in Ontario?
There is no provincial number. It depends on your city and the size of the rooms. In Toronto and Mississauga, divide the habitable floor area by 9 m². In Brampton, each bedroom must meet the size for the number of adults sleeping in it.
Can 3 adults share a bedroom in Brampton?
Only if the room is at least 14 m², about 151 sq ft, and was built as a bedroom under a permit. A typical 10 by 12 foot room is about 11.1 m², too small for three adults.
Can a city limit how many unrelated people live in a house?
No. Ontario’s Planning Act prohibits zoning that distinguishes between related and unrelated people. Cities regulate space and how rooms are rented, not relationships.
Do children count toward occupancy limits?
In Toronto and Mississauga, the 9 m² rule counts every person. In Brampton, the three-person and four-person bedroom rules count only people 18 or older, but children’s rooms must still meet the other standards.
Is renting rooms to students legal in Brampton?
Yes, with conditions. Renting the whole house to a group on one lease, or up to four separate room rentals, needs a Residential Rental Licence. More than four separate tenants is a lodging house, which needs zoning approval and a lodging house licence.
Are rooming houses legal in Mississauga?
A licensed lodging house with up to four lodging units is allowed in a detached house. Five or more separately rented rooms is a rooming house, which the City has said is not permitted. A Ward 5 pilot was being designed after a May 2025 Council direction.
Are rooming houses legal in Toronto?
Yes. Since March 31, 2024, licensed multi-tenant houses are permitted citywide, with up to six rooms everywhere and more in some downtown zones.
Can someone sleep in the basement?
Only in a room that was legally built as a bedroom, with the required ceiling height, window and exits. Brampton bans sleeping in cellars, and Mississauga does not allow lodging units in a basement.
What happens if my house is over the limit?
The City can issue orders and fines. Brampton occupancy fines run $500, $750 and then $1,000. You must fix the problem without breaking tenant law, which usually means ending some tenancies properly through the Landlord and Tenant Board process.
The takeaway
The question is never “how many people”, it is “how much space, and how is it rented”. Measure your bedrooms, total your habitable floor area, confirm every bedroom had a permit, and count your separate leases against your city’s threshold. If the numbers work and you have the right licence, you have a lawful rental. If they do not, fix it before a complaint does it for you.
Considering Airbnb instead? Short-term rentals follow different rules, and only in the home you live in. See our Airbnb rules for Toronto, Mississauga and Brampton.
Thinking about adding rental income the legal way? Read our guides to registering a basement apartment in Brampton and Brampton garden suites.
Sources and verification
Checked October 11, 2026.
- City of Brampton, Property Standards By-law 165-2022, office consolidation (section 24, as amended by By-law 3-2025)
- City of Brampton, Bedroom occupancy standards
- City of Brampton, Shared accommodations and lodging houses
- City of Brampton, Lodging house licence requirements
- South Asian Daily, January 2025: Brampton occupancy amendments and fines
- City of Brampton, Residential Rental Licensing FAQs
- Office of the Mayor of Brampton, December 2025
- City of Mississauga, Property Standards By-law 654-98 (section 42)
- City of Mississauga, Residential Rental Accommodation Licensing By-law 0172-2010
- City of Mississauga, Council recap, May 14, 2025 (Ward 5 lodging house pilot)
- insauga, July 2022: City statement on rooming houses
- City of Toronto, Municipal Code Chapter 629, Property Standards (section 629-25)
- City of Toronto, Multi-tenant house owners and operators
- Ontario Human Rights Commission, Good planning leads to healthy, inclusive communities
- Ontario Planning Act (section 35(2))
Written and researched by Local Toronto Editorial. This guide is general information, not legal advice. Confirm your situation with your city before renting or renovating.