Reviewed by Sean McNamara, 2026-10-07
A four-person shared house does not need a licence under the MANDATORY licensing scheme in England - that starts at five or more people forming two or more households. But 'no mandatory licence' is not the same as 'no licence': many councils run additional licensing schemes that cover smaller HMOs, and the property may still be an HMO in law with all the management and standards duties that entails.
Mandatory licensing (England): HMOs with five or more occupants from two or more households, regardless of storeys (the storey condition was removed in 2018). Wales has its own regime with similar five-person mandatory licensing.
Additional licensing: councils can require licences for smaller HMOs (3-4 people) in defined areas with evidence of problems. Selective licensing can even cover non-HMO rented homes in designated areas. Your council's website lists current schemes - schemes expire and get renewed, so check rather than assume.
Even unlicensed, a 4-person HMO must meet the Management of Houses in Multiple Occupation (England) Regulations: fire doors and alarms kept in repair, escape routes clear, facilities in good order, and the manager's contact details displayed. Councils can serve improvement notices and, for serious hazards, take action under the Housing Health and Safety Rating System.
It is a criminal offence under Housing Act 2004 s.72 to manage or control a licensable HMO without a licence. Councils can prosecute (unlimited fine), issue a civil penalty of up to £30,000, and tenants can apply for a rent repayment order for up to 12 months of rent.
A shared house becomes an HMO in law once three or more people from two or more households share facilities. Licensing is a separate question: mandatory licensing needs five or more people, but local additional schemes can require licences below that.
Three unrelated sharers already make the property an HMO by definition, but it will not need a MANDATORY licence. Check whether your council's additional licensing scheme covers three-person shares, and follow HMO management regulations regardless.
Genuine exemptions include owner-occupier homes with up to two lodgers, buildings managed by certain public bodies, and some converted self-contained flats. 'My tenants are friends' is not an exemption - households are defined by family relationships, not friendship.
There is no national HMO 'register'. Licensing is through the local council, and some councils also require notification for smaller HMOs. National mandatory licensing applies to five or more people in two or more households.
The only lawful way is to operate outside licensable definitions - for example keeping occupancy to a single household, or staying below any local scheme thresholds. Deliberately under-declaring occupants or splitting a tenancy to dodge a licence is the offence, not a workaround.