Brad is on the roll of solicitors of England & Wales but does not hold a practising certificate and does not provide legal advice.
Updated June 2026 · England & Wales
If you let a property to a group of unrelated tenants who share a kitchen, bathroom or living space, you may be running what the law calls a House in Multiple Occupation, and that often means you need a licence from the local council before tenants move in. HMO licensing exists to keep shared homes safe, properly managed and fit to live in, and the rules bite hard on landlords who get it wrong.
I'm Brad Askew, founder of LegalDocuments.co.uk, and on this page I've pulled together what landlords typically need to think about: when a licence is required, the difference between mandatory and additional schemes, how applications usually work, and the obligations that sit with the licence holder once it's granted.
Overview
A House in Multiple Occupation is, broadly, a property let to three or more occupants who form more than one household and share basic facilities such as a kitchen or bathroom. A 'household' generally means a single person, a couple, or members of the same family, so three unrelated sharers in a flat will typically qualify, while a family of four usually won't.
An HMO licence is permission, granted by the local authority, to operate that kind of shared property. It confirms the council has checked the landlord (and often the managing agent) is a 'fit and proper person', that the building meets minimum standards for room sizes, fire safety, amenities and waste, and that suitable management arrangements are in place.
Not every HMO needs a licence. Larger HMOs always do under the national mandatory scheme, but many councils run additional schemes that pull smaller shared houses into the net too. Rules vary significantly between local authorities, so the same property can be licensable in one borough and not in the next.
Renting out an HMO without the required licence is a criminal offence and can trigger rent repayment orders in favour of tenants.
Key steps
Work out whether the property is an HMO. Start by looking at who lives there and how they use the space. If three or more people from two or more households share a kitchen, bathroom or toilet, you're likely running an HMO. Converted blocks of flats and certain bedsit arrangements can also fall within the definition even when it doesn't feel obvious.
Check your local council's licensing scheme. Mandatory licensing applies across England and Wales to HMOs with five or more occupants forming two or more households, but many councils add their own additional or selective schemes on top. Search the council's website for the specific ward or street, requirements differ between authorities and can change when a scheme is renewed or extended.
Get the property up to standard before applying. Councils expect working fire alarms, fire doors where appropriate, safe electrics with an up-to-date EICR, an annual gas safety check, adequate kitchen and bathroom provision for the number of occupants, and bedrooms that meet minimum size rules. Sorting these before submitting the application avoids conditions, delays or refusal.
Submit the licence application. Apply to the local authority covering the property, paying the relevant fee and providing details about the building, the proposed licence holder, the manager, tenancy arrangements and compliance certificates. You'll usually need to notify certain 'relevant persons' such as mortgage lenders and any freeholder that you've applied.
Comply with the licence conditions once granted. A licence typically lasts up to five years and comes with conditions covering occupancy limits, safety checks, waste, anti-social behaviour and reporting changes. Keep records, renew certificates on time, and apply for a new licence well before expiry, licences don't renew automatically and operating after one lapses exposes you to the same penalties as never having had one.
The general test is whether three or more people, forming two or more households, live in the property as their main home and share a kitchen, bathroom or toilet. A household is broadly one person, a couple, or members of the same family. Purpose-built blocks of flats are treated differently, and some converted buildings count as HMOs in their own right. If you're unsure, the local council's housing team can confirm.
Q Which HMOs need a mandatory licence?
Mandatory licensing applies where an HMO is occupied by five or more people making up two or more separate households. It catches most large shared houses and bedsit-style properties regardless of the number of storeys. The requirement is set nationally, so it applies in every local authority in England. Wales has its own equivalent rules. Operating a mandatory-licensable HMO without a licence is a criminal offence.
Q What's the difference between mandatory and additional licensing?
Mandatory licensing is a national rule covering larger HMOs. Additional licensing is a discretionary scheme a council can introduce to cover smaller HMOs, typically those with three or four occupants from two or more households, in areas where shared housing is causing problems. Because additional schemes are local, two similar properties in different boroughs may have very different licensing requirements. Always check the specific council's current schemes.
Q What can happen if I rent out an HMO without a licence?
Running an unlicensed HMO is a criminal offence. Councils can prosecute or impose a civil penalty instead, and the sums involved can be substantial, check gov.uk or the local authority for current figures. Tenants and the council can also apply for a rent repayment order requiring the landlord to repay up to twelve months of rent. An unlicensed landlord generally cannot serve a valid section 21 notice either.
Q How long does an HMO licence last and can conditions be attached?
Licences are usually granted for up to five years, though councils can issue shorter ones. Every licence comes with standard conditions, for example around gas and electrical safety, smoke alarms and occupancy numbers, and councils often add discretionary conditions specific to the property. Breaching any condition can lead to enforcement action or revocation, so it's important to read the licence carefully when it arrives.
Q Do I need planning permission as well as a licence?
Possibly. Licensing and planning are separate regimes. Changing a property from a family home to a small HMO may need planning permission depending on whether the local authority has made an Article 4 direction in that area. Larger HMOs generally require planning consent as a different use class. Getting an HMO licence does not grant planning permission, and vice versa, both need to be considered.
Q Can a managing agent hold the licence instead of me?
Yes. The licence can be held by the person having control of the property or the person managing it, which in practice can be the landlord or the agent. Whoever is named must be considered a 'fit and proper person' by the council. Even if an agent is the licence holder, the landlord remains commercially responsible and should make sure obligations are being met in practice.
HMO rules change by council and a property that's fine in one area can be unlicensable in the next. An experienced legal adviser can help you think through how the rules apply based on what you describe about your property and tenants.
✓Plain-English answers to your specific questions about HMO licensing
✓Practical perspective on whether mandatory or additional licensing is likely to apply
✓Guidance tailored to what you describe about your property and occupants
✓What to watch out for with conditions, penalties and section 21 in your circumstances
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Written & reviewed by
Brad Askew Solicitor (non-practising)
Brad is on the roll of solicitors of England & Wales but does not hold a practising certificate and does not provide legal advice. LegalDocuments.co.uk is not a law firm and does not provide regulated legal advice.
This article is for general information only. It is a tool to help you find your way — not legal advice, and not a substitute for speaking to a qualified adviser about your situation.