HDB Occupancy Cap: How Many Tenants Can Share a Flat

By Winfred Quek · CEA R073319H · Published 26 October 2026

Facts verified: 26 October 2026 · Sources listed below

How many people can live in a rented HDB flat is one of the first things a landlord and a tenant group should settle, because the number is capped by HDB, not by negotiation. The cap depends on whether the whole flat or only bedrooms are rented, on the flat type, and on the rental period. This page sets out the current rules as HDB publishes them, the date on which the cap for bigger flats changes, the family exception, and what HDB says about breaches. It is general information, not legal advice. For the wider rules on renting an HDB flat, see HDB and condo renting rules for first time tenants, and for sharing a rental fairly among flatmates, the co tenancy roommate agreement guide.

Two different counts: tenants for a whole flat, occupants for bedrooms

HDB counts differently depending on how the flat is rented. When the whole flat is rented out, the cap is on the number of tenants. When only bedrooms are rented, the cap is on the number of occupants in the flat, and HDB says occupants include owners, authorised occupiers and tenants. So an owner who stays in the flat and rents out a bedroom uses up places in the cap.

Only bedrooms originally constructed by HDB can be rented out. HDB says all other parts of the flat, including partitioned rooms, cannot be used as bedrooms for tenants.

The 31 December 2028 change for 4 room and bigger flats

The higher figure of 8 for 4 room and bigger flats is temporary. HDB's wording is that the number allowed will revert to a maximum of 6 for a rental period extending beyond 31 December 2028. The test is the rental period, not the date a tenant moves in. On a plain reading, a tenancy that starts before the date but runs past it falls under the lower cap. Take an assumed 12 month tenancy for a 4 room flat that begins on 1 July 2028 and ends on 30 June 2029: it extends beyond 31 December 2028, so 6 is the figure to plan around. If your dates are close to the line, confirm with HDB before you sign. A 3 room flat stays at 6 either way.

The same date appears in URA's rules for private homes, covered below, so landlords with more than one property will see the pattern repeat.

The family unit exception

HDB says the maximum number of tenants does not apply if all the tenants renting a whole flat are from the same family unit. Two limits are worth noting. It applies to whole flat rentals, and it is described for tenants who all come from one family unit. For bedroom rentals, HDB says the maximum number of occupants applies even if the flat owner rents the bedrooms to tenants from the same family unit. The pages we checked do not define family unit in so many words, so if your group is a mix of relatives and friends, ask HDB how your household is counted before you rely on the exception.

Rules that sit alongside the cap

• Approval first: HDB approval is needed before the tenancy starts, for a whole flat or for bedrooms. Only authorised tenants may live in the flat.
• Minimum and maximum period: at least 6 months per tenant per application, and up to 3 years if all tenants are Singaporeans or Malaysians, or 2 years if any tenant is a non Malaysian non citizen.
• Changes within 7 days: the owner must notify HDB within 7 days of a termination, renewal, or change to tenants. New tenants need HDB approval before they move in.
• Eligible tenants: citizens, permanent residents, and non citizens holding valid passes of at least 6 months validity at application. Tourists are not allowed.

An owner of a 3 room or bigger flat who rents bedrooms must also keep living in the flat. HDB says locking up a room and renting out the rest of the flat without staying in it is not allowed.

What HDB says happens if the cap is exceeded

HDB places the responsibility on the owner. Its list of flat owner responsibilities includes making sure only authorised tenants stay in the flat and that the number of tenants does not exceed the maximum allowed. It also says the owner is responsible for all infringements committed by the tenants. HDB says it takes a very serious view of unauthorised rental and will not hesitate to take action against errant owners.

For bedrooms, HDB spells out more. If an owner does not obtain approval, or does not inform HDB of changes to tenants or the tenancy, the rental is considered unauthorised. HDB says it can then take action such as imposing a penalty and compulsory acquisition of the flat. It also says it will revoke the approval for renting out bedrooms if an owner flouts the rules. The pages we checked do not list a fixed penalty amount for exceeding the headcount alone, so we do not quote one. The practical lesson is the same: the risk lands on the owner, and a tenant group that squeezes in an extra person puts the owner's flat at stake as well as the tenancy.

How private homes compare

URA sets a separate cap for private residential property: six unrelated persons for properties smaller than 90 sqm. From 22 January 2024 to 31 December 2028 there is a temporary relaxation to eight individuals for properties of at least 90 sqm strata or lot area, subject to registration and a $20 fee. URA counts unrelated persons as anyone not in the same family unit, with domestic helpers treated as part of the family unit, and the minimum stay for private homes is three consecutive months. An HDB flat follows HDB's rules, not URA's.

A short checklist for landlords and tenant groups

• Landlords: count heads against the right column of the table, including yourself if you stay in, and check the end date of the tenancy against 31 December 2028.
• Tenants: ask for proof that you are registered with HDB. HDB says owners can print a confirmation letter of authorised tenants, or use its enquiry service.
• Groups: agree in writing who is on the tenancy and what happens if someone leaves, and read what happens with illegal subletting.
• Everyone: for a bedroom rental see whole unit versus room rental, and for the owner side after the minimum occupation period, HDB rental after MOP.

Frequently asked questions

How many tenants can live in a 4 room HDB flat?

HDB's cap for a 4 room or bigger flat is 8 tenants, but for a rental period extending beyond 31 December 2028 it reverts to 6. The cap does not apply if all tenants renting the whole flat are from the same family unit.

Does the owner count towards the limit when renting out a bedroom?

Yes. For bedroom rentals HDB counts occupants, which includes owners, authorised occupiers and tenants. A 3 room flat allows 6 occupants and 1 bedroom rented out, and a 4 room or bigger flat allows 8 occupants (6 for rental periods extending beyond 31 December 2028) and 2 bedrooms rented out.

Does the family unit exception apply to bedroom rentals?

No. HDB says the maximum number of occupants applies even if the flat owner rents the bedrooms to tenants from the same family unit. The family exception is described for tenants renting a whole flat.

What happens if more people live in the flat than allowed?

HDB makes the flat owner responsible for ensuring the number of tenants does not exceed the maximum and for infringements by tenants. It says it takes unauthorised rental seriously and can act against owners. For bedroom rentals it can revoke approval, and unauthorised rental can lead to a penalty and compulsory acquisition of the flat.

Winfred Quek, CEA R073319H, Crestbrick Pte Ltd (L3010886H). General information as at 26 October 2026, not legal, financial, tax or property advice. Rules are from HDB and URA pages checked on that date and may change. The date example uses assumed dates. This page makes no rent or price forecast.