Do I Need an HMO Licence in England?

A council letter lands on the mat, a tenant's partner moves in, and suddenly you're wondering whether the house you rent out counts as a House in Multiple Occupation. The penalties for getting this wrong run up to £40,000 per offence — so the question matters.

What Counts as an HMO Under the Housing Act 2004

Part 2 of the Housing Act 2004 sets out three statutory tests. Your property is an HMO if it meets one of them, is subject to an HMO declaration under s.255, or is a converted block covered by s.257:

• Standard test (s.254(2)): Living accommodation in a building or part that is not composed solely of self-contained flats, occupied as the occupiers' only or main residence by people who do not form one household. At least one person's occupation must involve rent or other consideration; their occupation must be the only use of the accommodation; and two or more households must share a basic amenity (cooking, personal washing or toilet facilities) or the accommodation must lack one.
• Self-contained flat test (s.254(3)): A self-contained flat whose occupants meet the same residence, household, rent, use and shared-or-missing-amenity criteria.
• Converted building test (s.254(4)): A converted building containing living accommodation that is not entirely self-contained flats, occupied as the occupants' only or main residence by people who do not form one household. At least one person's occupation must involve rent or other consideration, and their occupation must be the only use of that accommodation.

A "household" means a single person or members of the same family — married or cohabiting couples, parents, children, siblings, cousins, and step-relations all count as one household under s.258.

The Mandatory Licensing Threshold

Since 1 October 2018, any property in England occupied by five or more people forming two or more separate households needs a mandatory HMO licence. The old three-storey rule was scrapped by SI 2018/221 — it doesn't matter whether the property is a bungalow, a two-storey terrace, or a tower block.

Purpose-built flats in a block containing three or more self-contained flats are exempt from this national mandatory scheme, though a local discretionary licensing scheme may still apply.

Children of any age count as full persons toward the five-person threshold. Full-time students living in shared accommodation during term count as using it as their main residence, even during holiday breaks.

Example: A cohabiting couple and three unrelated individuals sharing a four-bedroom house. The couple is one household; each of the three individuals is a separate household. Total: five people across four households. That property needs a mandatory HMO licence regardless of which council area it sits in.

Properties That Don't Need a Mandatory HMO Licence

Schedule 14 of the Housing Act 2004 exempts certain properties from HMO classification:

• Resident landlords with up to two lodgers: If you live in the property as your main home and take in no more than two unrelated lodgers, the property isn't an HMO. Add a third lodger and the exemption disappears.
• University-managed halls: Student accommodation managed directly by a university under an approved code of practice (UUK/GuildHE or ANUK/Unipol). Private landlords renting to students are not exempt.
• Social housing: Properties managed by local authorities, housing associations, or registered providers of social housing.
• Religious communities: Buildings occupied principally by members of a religious community.

A property below the five-person threshold might still need an additional or selective licence if the council has designated those schemes in your area. The mandatory licence supersedes all discretionary schemes.

How to Check Whether Your Property Needs a Licence

Start with the property's postcode:

1. Use the GOV.UK local council lookup to identify which local housing authority administers the address. Postcodes can straddle council boundaries — confirm the exact administrative area.
2. Check that council's property licensing register, designation maps, and postcode checkers for any active additional or selective licensing schemes.
3. Count occupants, not bedrooms. A four-bedroom house occupied by four unrelated adults doesn't need a mandatory licence — but if a partner moves in and the total reaches five, the threshold is crossed immediately.

If your property falls below the mandatory threshold but sits in an area with an additional or selective scheme, you still need a licence from the council. The only way to confirm is to check the specific address against the council's scheme boundaries.

What Happens If You Need a Licence and Don't Have One

Operating an unlicensed HMO is an offence under s.72(1) of the Housing Act 2004. Councils can issue civil penalties of up to £40,000. For offences committed on or after 1 May 2026, tenants or the council can apply for a Rent Repayment Order for up to two years' rent; offences committed before that date remain subject to the former one-year maximum. Section 75's former restriction concerned Section 21 notices, which are no longer available for private tenancies from 1 May 2026; it does not bar a Section 8 notice solely because the HMO is unlicensed.

If your property does need a licence, the step-by-step HMO licensing guide walks through the full application: the five-person test in detail, documents, fees, licence conditions, and the renewal process.

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