Updated October 2026
In short: there's no single number. For a family home, the limit comes from the statutory overcrowding rules, which depend on how many rooms there are, their size and the ages of the people. If unrelated sharers live there, HMO rules, licensing and minimum bedroom sizes apply. In practice, a typical 3-bed house with a separate living room is often suitable for about five people as a family home, and fewer as a licensed shared house, but the details matter.
Statutory overcrowding (family homes)
Part 10 of the Housing Act 1985 sets two tests. A home is overcrowded if it fails either.
The room standard
The home is overcrowded if two people of the opposite sex, aged 10 or over and not living together as a couple, have to sleep in the same room. Living rooms and kitchens big enough for a bed count as rooms for this test.
The space standard
This sets a maximum number of people based on the number and size of rooms (bedrooms and living rooms over 50 sq ft). In simple terms, by number of rooms:
- 3 rooms: 5 people
- 4 rooms: 7.5 people
- 5 or more rooms: 2 people per room
Babies under one don't count, and children aged 1 to 9 count as half a person. Smaller rooms reduce the numbers. So a 3-bed house with one living room (four rooms) could hold up to 7.5 "persons" on the space standard, but the room standard may still be broken depending on ages and sexes.
Shared houses (HMOs)
- A house shared by 3 or more people from 2 or more households is an HMO.
- Mandatory licensing applies where 5 or more people from 2 or more households live there. Many London boroughs also license smaller HMOs.
- Minimum bedroom sizes in licensed HMOs: 6.51 m² for one adult, 10.22 m² for two adults, and 4.64 m² for a child under 10.
- The licence sets the maximum number of occupants and the required kitchen and bathroom facilities.
Benefits and bedroom entitlement
Separately from legal limits, Universal Credit and Housing Benefit use bedroom rules to decide how much rent support you get. That can affect what size home you can afford, but it doesn't make a home legally overcrowded.
What if a home is overcrowded?
- Tenants can contact the council, which can inspect and act.
- Social housing applicants who are overcrowded may get priority on the housing register.
- Landlords who allow statutory overcrowding, or exceed HMO licence limits, risk fines and enforcement.
This guide gives general information for tenants in England and isn't legal advice. For your own situation, contact Shelter, Citizens Advice or a housing solicitor.
For landlords
Fraser Bond helps landlords set up and manage compliant HMOs and family lets, including licensing applications and occupancy checks.
