Crowding in Canada is measured by bedrooms: a home is "suitable" if it has enough bedrooms for the size and makeup of the household under the National Occupancy Standard. If you plan new homes around how many bedrooms your families actually need, and add flexible space, storage and bathrooms that let a large household function, you design crowding out instead of measuring it later.
This post explains what the standard says, how to run the bedroom count for a real household, what federal public health bodies say about crowding, and which design choices are worth discussing with your council, your housing committee and your builder. It is general planning information, not a program rule. Confirm any funding conditions with Indigenous Services Canada (ISC) or Canada Mortgage and Housing Corporation (CMHC).
What is the National Occupancy Standard?
Statistics Canada defines housing suitability as whether a private household is living in suitable accommodations according to the National Occupancy Standard (NOS), "that is, whether the dwelling has enough bedrooms for the size and composition of the household." Statistics Canada's definition of housing suitability says the NOS was developed by CMHC through consultations with provincial housing agencies in the 1980s. CMHC's own page on the standard says it "was created in the mid-1980s by the federal, provincial and territorial governments."
The bedroom rules, as set out in Statistics Canada's classification note, are:
- A maximum of two persons per bedroom.
- Members of a married or common-law couple, of any age, share a bedroom with their spouse or partner.
- Parents in a one-parent family, of any age, have a separate bedroom.
- Household members aged 18 or over have a separate bedroom, except those living as part of a couple.
- Household members under 18 of the same gender share a bedroom, except lone parents and those living as part of a couple.
- Household members under 5 of different genders share a bedroom if doing so would reduce the number of required bedrooms.
- One person living alone does not need a separate bedroom and can live in a studio and still be counted as suitably housed.
One caution matters for anyone writing an allocation policy. CMHC states that the standard is not "a rule, regulation or guideline for determining if a given dwelling unit" can be rented to or occupied by a given household. It is a measurement tool. If your community uses it to plan or allocate homes, that is your own policy choice, so write it down as such.
How do you count the bedrooms a household needs?
Run the rules in order for each person. Take a hypothetical household of eight: two parents, a grandmother, a 19-year-old son, two boys aged 10 and 12, a girl aged 3 and a boy aged 4.
- The parents are a couple: one bedroom.
- The grandmother is an adult who is not part of a couple: one bedroom.
- The 19-year-old is 18 or over: one bedroom.
- The two boys under 18 are the same gender: they can share one bedroom.
- The 3-year-old girl and 4-year-old boy are both under 5, and sharing reduces the count: one bedroom.
That household needs five bedrooms. In a three-bedroom house it would be counted as not suitable, two bedrooms short. Now age the same family five years: the 3- and 4-year-olds are 8 and 9 and can no longer share across genders, and the 12-year-old will soon be 18. The need rises to six bedrooms without anyone moving in. This is the point many plans miss: bedroom need changes as children grow, so a home sized for today's family can become crowded on paper with no change in who lives there.
A practical step: when you build your housing wait list, record each applicant household's members by age and relationship, not just a head count. You can then run the NOS for each household now and five years out, and see which bedroom counts your next build actually needs. For working with community-wide numbers, see our post on using Indigenous housing data in a housing plan.
How common is crowding, and why does it matter for health?
One framing figure from the 2021 Census: according to Statistics Canada, "In 2021, 17.1% of Indigenous people lived in crowded housing," meaning housing not suitable under the NOS, compared with 9.4% of the non-Indigenous population.
Federal public health bodies tie crowding to the spread of tuberculosis (TB). In a 2024 joint statement for World Tuberculosis Day, the Chief Public Health Officer of the Public Health Agency of Canada (PHAC) and ISC's Chief Medical Officer of Public Health named the factors that contribute to the disease's spread, "such as overcrowded housing, food insecurity, poverty, stigma and discrimination."
A December 2024 study in PHAC's Canada Communicable Disease Report, by authors from the Northern Inter-Tribal Health Authority and the University of Saskatchewan, looked at paediatric TB in northern Saskatchewan First Nations. It found cases "were predominantly from communities with low education (100%), inadequate housing (67%) and low income (67%)." The authors concluded that "more housing must be built and current housing must be repaired."
Note what these sources do and do not say. They identify crowding as a contributing factor; they do not say a particular floor plan prevents disease. Ventilation also matters in a full house. Our post on HRVs and indoor air covers that side.
How many bedrooms should a new home have?
Many housing plans default to three-bedroom units. CMHC's 2022 universal design guide for multi-unit buildings pushes against that habit. It says designers might consider "abandoning assumptions that every household should have a master bedroom with two smaller rooms for children," and asks: "Some families are multi-generational; will the MURB have units with three or more bedrooms?"
Points to weigh when you set the bedroom mix:
- Size from the list, not the norm. Run the NOS against your wait list and against the five-year projection. If several households need five or six bedrooms, a row of three-bedroom units will not solve their crowding.
- Similar bedroom sizes. If two children of the same gender will share, a second bedroom large enough for two beds and two dressers is more useful than one large primary bedroom and two small rooms.
- A ground-floor bedroom. An Elder or a family member with limited mobility may need a bedroom and bathroom without stairs. Our post on accessible housing for Elders goes further.
- A mix across the build. A project of several homes can include a few larger units for the largest households and smaller units so that young adults or couples who want their own place can move out of a crowded home.
When does a secondary suite or flexible room make sense?
Multigenerational living is not only a space problem; for many families it is the way they want to live. CMHC's What We Heard report from its 2023 engagement on Indigenous housing recorded that "Appropriate family space to support multigenerational living and cultural sharing would have positive impacts on support networks, mental health and spiritual well-being."
Design options to discuss, each with trade-offs:
- A secondary suite or lock-off unit: a small self-contained unit with its own entrance, kitchenette and bathroom, attached to the main home. It can house grandparents, a young couple, or later a caregiver, while the family stays together. Check with ISC or CMHC how a suite would be treated under any funding agreement and in your housing policy before you design one.
- A flexible room: a room near the entrance with a door and a closet that can serve as a bedroom, an office, or a room for a visiting relative. The CMHC guide mentions "work-from-home or learn-from-home spaces"; with a door, a window and a closet, the same room can be used as a bedroom when the family grows.
- Space to gather: a kitchen and living area large enough for the whole household to eat together. In a large family, a cramped common area pushes people into bedrooms and makes the home feel more crowded than the bedroom count suggests.
What else makes a full house work: bathrooms, storage and mudrooms?
The NOS counts bedrooms only, but households experience crowding through queues for the bathroom, gear piled in hallways and nowhere to dry clothes. These are planning considerations, not measured standards:
- Bathrooms. For a household of six or more, a second full bathroom, or a full bath plus a separate half bath, reduces morning bottlenecks. Separating the toilet from the tub so two people can use the room at once is another option.
- A mudroom or large entry. Boots, coats, hunting and fishing gear, and children's winter clothing need a place to go. A mudroom with a durable floor, hooks, a bench and a floor drain where feasible keeps water and dirt out of the living space.
- Storage. Large families buy in bulk, especially in communities supplied by winter road or air. A pantry, a utility room with space for a chest freezer, and closets in every bedroom free up common areas.
- Laundry. A full-size washer and dryer in a utility room, not a stacked unit in a closet, matters when laundry runs every day.
- Durable finishes. More people means more wear. Ask about flooring, wall finishes and fixtures chosen for heavy use, and how they will be repaired.
Each of these adds floor area and cost. A useful exercise for a housing committee is to rank them against your budget and your families' needs before design starts, so the builder is pricing your priorities. Our partner site's guide to funding modular buildings for First Nations covers where capital funding may come from.
Where does a builder fit in?
A builder turns your bedroom mix and room priorities into floor plans and a price. Bring your NOS counts and your ranked list to the first conversation, and ask the builder to show you how each plan meets them.
Herauf Modular builds homes and community buildings as finished sections indoors in its Saskatchewan and BC plants, then delivers and sets them on site. Every unit meets or exceeds CSA A277 and the National Building Code for climate zones 6 through 8. Most builds are manufactured and delivered in about 16 weeks, with foundations, pads and services prepared on site at the same time. At Buffalo Lake Métis Settlement in Alberta, Herauf delivered 20 homes with CMHC and government agencies. For more on how factory-built homes reach remote sites, see modular Indigenous housing.
If you are planning homes for large or multigenerational families, contact Herauf Modular. We reply to enquiries within one business day.
This guide is general information, not legal or financial advice. Program rules change: confirm the details with the program, your Indigenous Services Canada regional office or CMHC before relying on them. Herauf does not administer any program or apply on a community's behalf.