HMO Licence Requirements UK

A House in Multiple Occupation, or HMO, is a property let to three or more tenants who form more than one household and share facilities such as a toilet, bathroom or kitchen. Whether you need a licence to run one depends on the size of the property, the local authority's own licensing rules, and in some areas, whether the council has introduced additional or selective licensing on top of the national scheme.

Getting the licensing category wrong is a common and costly mistake, since letting an unlicensed HMO that should have been licensed is a criminal offence with serious financial consequences, including the possibility of tenants reclaiming rent through a Rent Repayment Order. This guide sets out how to tell whether your property needs a licence, and what the application process typically involves.

Definition of an HMO

A property counts as an HMO if it is occupied by three or more tenants forming more than one household, and they share at least one basic amenity, such as a kitchen, bathroom or toilet. A "household" generally means a single family unit, or a couple, so a group of friends or unrelated professionals sharing a house each count as separate households even if they get on well and effectively live as one unit.

This definition catches a wide range of common lettings: a shared house of three or more sharers, some converted flats where facilities are shared between units, and some purpose-built student or professional shared accommodation. It does not typically catch a family renting a whole house together, or a couple with a lodger where the arrangement does not otherwise meet the household test, though edge cases exist and are worth checking against official guidance if you are unsure.

As a worked example, four friends who each signed the same tenancy agreement to share a house, with a communal kitchen and two bathrooms between them, meet the definition: four tenants, four separate households, shared facilities. By contrast, a married couple and their two children renting the same house as a family do not meet the definition, since they form a single household regardless of how many bedrooms they use. The number of bedrooms or the size of the property does not determine HMO status on its own, it is the number of unrelated households and whether they share facilities that matters.

Mandatory licensing

Mandatory HMO licensing applies nationally to any HMO occupied by five or more people from two or more households sharing facilities, regardless of the number of storeys the property has. This removed an earlier rule that only counted HMOs of three or more storeys, so smaller, single-storey or two-storey properties with five or more sharers now need a licence in the same way a larger converted house would.

If your property meets this threshold, you must apply for and hold a licence from the relevant local authority before letting it as an HMO, and operating without one is a criminal offence even if you were unaware the threshold applied to your specific property. Mandatory licensing rules apply in England; Wales and Scotland run their own HMO licensing schemes with broadly similar principles but separate legislation, so check the specific rules for the nation your property is in.

This matters in particular for landlords who bought a smaller converted property, such as a two-storey house split into bedsits, on the assumption that mandatory licensing only applied to larger, taller buildings. Since the storey threshold was removed, any property with five or more sharers from two or more households is caught regardless of its height, so it is worth re-checking older assumptions about a property's licensing status, especially if you inherited a letting arrangement or bought a property with sitting tenants already in place.

Additional and selective licensing

Beyond the mandatory national scheme, individual local authorities can introduce their own additional licensing schemes, which extend licensing requirements to smaller HMOs in their area, typically covering properties with three or four sharers that would otherwise fall below the mandatory threshold. Additional licensing is decided area by area, so the same size and type of property might need a licence in one council's area and not in a neighbouring one.

Separately, some councils run selective licensing schemes, which apply to all private rented properties in a designated area regardless of whether they are an HMO at all. Selective licensing is aimed at raising standards across a whole rental market in a specific ward or borough, often in response to concerns about property condition, anti-social behaviour or deprivation in that area, rather than at HMOs specifically. It is entirely possible for a single let, non-shared property to need a selective licence even though it would never need an HMO licence. Our guide to selective licensing for landlords covers this separate scheme in more detail, and our guide on whether you need an HMO licence at three tenants walks through the smaller end of the threshold in more depth.

Because additional and selective licensing decisions sit with individual councils, always check directly with the local authority covering the property's address before assuming a national rule is the full picture. Council websites typically list current licensing designations, or you can contact the housing or private sector licensing team directly.

Application process

Applying for an HMO licence generally involves:

1. Submitting an application to the local authority, including details of the property, the number of occupiers and households, and floor plans in some cases.
2. Naming a licence holder and, if different, a manager, both of whom must pass a "fit and proper person" test, which considers matters such as relevant convictions and history of housing law compliance.
3. Providing current safety certificates, typically including a gas safety certificate where applicable, an EICR, and a fire risk assessment.
4. Meeting the council's amenity and space standards for HMOs, which set minimum room sizes and kitchen or bathroom facilities relative to the number of occupants.
5. Paying the application fee set by the local authority, which varies by council rather than being a single UK-wide figure.

Licences are typically granted for up to five years, though a council can grant a shorter period or attach specific conditions, such as a cap on room numbers, requirements around waste management, or a schedule of works needed to bring the property up to standard. Renew in good time before expiry, since letting on an expired licence is treated the same as never having had one at all.

Penalties

Operating an unlicensed HMO where a licence was required is a criminal offence, and local authorities can pursue prosecution or, more commonly in practice, issue a civil penalty as an alternative. Civil penalties for licensing offences can run into tens of thousands of pounds, and the exact maximum is set out in housing legislation and guidance rather than repeated here, since it can be revised. On top of any penalty, tenants or the local authority can apply to the First-tier Tribunal for a Rent Repayment Order, which can require the landlord to repay up to 12 months of rent received during the period the property was operated without the required licence.

Beyond the direct financial risk, an unlicensed HMO can also affect mortgage compliance if your lender's terms require appropriate licensing to be in place, and can complicate a sale, since buyers and their solicitors will typically ask for evidence of current licensing during due diligence. Our guide to HMO mortgages covers how licensing status interacts with financing an HMO, which is worth reading if you are considering converting a standard let into a shared house.

How Property HQ helps

Property HQ keeps HMO licence expiry dates, along with the gas safety, EICR and fire safety certificates a licence application depends on, in one compliance record. That makes it easier to renew before a licence lapses and to have the supporting paperwork ready when a council asks for it, rather than tracking multiple documents and deadlines across separate files.

Disclaimer

This guide is general information for UK landlords, not legal advice. HMO, additional and selective licensing rules vary by local authority and change over time. Check with the relevant council and GOV.UK before letting or continuing to let a shared property.