HMO Licensing: Does Your Rental Property Need a Licence?

What Is an HMO?

A house in multiple occupation — commonly known as an HMO — is a property rented out to three or more tenants who form two or more separate households and share facilities such as a kitchen, bathroom, or toilet. The definition comes from the Housing Act 2004, and it catches more properties than many landlords realise.

The term "household" is important here. A couple counts as a single household. A parent and child count as a single household. But two friends renting together, even if they are close, form two separate households in the eyes of the law.

This means that a three-bedroom house rented to three individual tenants who each signed the same joint tenancy agreement is still an HMO — because there are three tenants forming three separate households sharing a kitchen and bathroom.

The Three Types of HMO Licensing

Not every HMO needs a licence, and the type of licence you may need depends on the size of the property and the rules set by your local council. There are three licensing schemes to be aware of.

Mandatory Licensing

Mandatory HMO licensing applies across all of England. If your property is occupied by five or more tenants forming two or more separate households, it requires a mandatory HMO licence. This applies regardless of which council area the property sits in, and regardless of whether the property is a converted flat, a terraced house, or a detached building.

This threshold was extended in October 2018. Before that date, mandatory licensing only applied to properties of three or more storeys. The storey requirement has been removed, so a single-storey bungalow with five unrelated tenants now requires a licence.

Additional Licensing

Local councils have the power to introduce additional licensing schemes that cover smaller HMOs — those with three or four tenants forming two or more households that fall below the mandatory threshold. These schemes are not automatic. A council must consult on and formally designate an additional licensing scheme, and the scheme applies only within the area the council specifies.

Additional licensing schemes vary widely. Some councils apply them borough-wide, while others target specific wards or neighbourhoods. The scheme may last for up to five years before the council must review and renew it.

Selective Licensing

Selective licensing is different from HMO licensing. Under Part 3 of the Housing Act 2004, councils can introduce selective licensing schemes that require all privately rented properties in a designated area to hold a licence — whether they are HMOs or not.

A selective licence is not a substitute for an HMO licence. If your property is both an HMO requiring mandatory or additional licensing and falls within a selective licensing area, you may need both licences.

Selective licensing schemes are becoming more common. Councils typically introduce them in areas with high levels of anti-social behaviour, poor property conditions, or low housing demand. The scheme must be formally designated and, if it covers more than 20% of the council's area or more than 20% of its private rented properties, it requires Secretary of State approval.

The most common licensing mistake landlords make is assuming their property is too small to be caught. A three-bedroom house rented to three friends is an HMO — and depending on your council, it may need a licence.

How to Check If You Need a Licence

The simplest approach is to work through these steps:

1. Count your tenants and households. If there are five or more tenants forming two or more households, you need a mandatory HMO licence — no further checking required.
2. Check your local council's website. Search for "HMO licensing" or "property licensing" on your council's site. Look for any additional licensing schemes that apply to smaller HMOs.
3. Check for selective licensing. While you are on the council's website, look for any selective licensing designations that cover your property's area.
4. Contact the council directly if in doubt. Most councils have a private sector housing team that can confirm whether your specific property requires a licence. Get the answer in writing.

You can also check the government's guidance on HMO licensing for a general overview.

The Application Process

What You Will Need

An HMO licence application typically requires:

• Proof of ownership — Land Registry title or mortgage documents
• A floor plan showing room dimensions and layout
• Gas safety certificate — a current CP12 from a Gas Safe registered engineer
• Electrical safety certificate — an EICR dated within the last five years
• Fire safety provisions — details of fire alarms, fire doors, and escape routes
• Fit and proper person declaration — confirming you have no relevant convictions
• Management arrangements — who manages the property and how

Costs

Licence fees are set by individual councils and vary considerably. Expect to pay between £500 and £1,500 for a five-year licence. Some councils charge in two stages — an initial application fee and a further fee once the licence is granted. Fees for larger HMOs or those with a history of non-compliance may be higher.

How Long It Takes

Processing times depend on the council. Straightforward applications are sometimes determined within eight to twelve weeks, but some councils have backlogs that push processing times beyond six months. Once you have submitted a valid application, you are generally treated as having a "pending licence" and can continue to operate lawfully while the council processes it. However, this protection only applies if you have actually submitted the application — simply intending to apply is not enough.

Licence Conditions

Every HMO licence comes with conditions attached. Breaching those conditions is a criminal offence, so it is worth understanding what they require.

Room Sizes

Minimum room sizes for sleeping accommodation in licensed HMOs are set nationally:

• 6.51 square metres for a room occupied by one person over the age of 10
• 10.22 square metres for a room occupied by two persons over the age of 10
• 4.64 square metres for a room occupied by one child under the age of 10

A room that falls below the relevant minimum cannot be used as sleeping accommodation. The room size is measured as usable floor area — it does not include areas where the ceiling height is below 1.5 metres.

Fire Safety

Licensed HMOs must meet fire safety standards, which typically include:

• Fire doors to all bedrooms, kitchens, and living rooms
• A fire alarm system appropriate to the property (often interlinked mains-powered alarms)
• Clear escape routes that are free from obstruction
• Fire blankets in kitchens and, in larger HMOs, fire extinguishers

For a detailed breakdown, see our guide to fire safety regulations for rental properties.

Facilities

Councils set conditions on the ratio of bathrooms, toilets, and kitchen facilities to the number of occupants. A common standard is:

• One bathroom and one toilet for every five occupants (with a separate toilet where there are five or more sharing a bathroom)
• Adequate kitchen facilities — including cookers, sinks, worktops, and food storage — proportionate to the number of occupants

Management Standards

Licence conditions will typically require you to:

• Keep communal areas clean, in good repair, and adequately lit
• Ensure rubbish disposal arrangements are in place
• Maintain the structure and exterior of the property
• Provide written tenancy terms to all occupants
• Carry out regular inspections and address hazards promptly

Penalties for Operating Without a Licence

Operating an HMO without the required licence is taken seriously. The consequences go beyond a simple fine.

Financial Penalties

A council can impose a civil penalty of up to £30,000 for operating an unlicensed HMO. Alternatively, the council may choose to prosecute. On criminal conviction, the court can impose an unlimited fine.

Rent Repayment Orders

Under the Housing and Planning Act 2016, tenants — or the local authority on their behalf — can apply to the First-tier Tribunal for a rent repayment order if the landlord has been operating an unlicensed HMO. The tribunal can order the repayment of up to 12 months' rent per tenant.

This is a powerful incentive for compliance. A property with five tenants each paying £600 per month creates a potential exposure of £36,000 in rent repayment orders alone, before any fine is considered.

Section 21 Restrictions

While Section 21 notices are being phased out under the Renters' Rights Act, it is worth noting that a landlord cannot serve a valid Section 21 notice while a property is required to be licensed but is not. This restriction has caught many landlords off guard in possession proceedings.

Common Scenarios

"I rent to a couple and their friend"

This is one of the most common HMO questions. You have three tenants — one couple (one household) and one friend (a second household). They share a kitchen and bathroom. This property is an HMO under the Housing Act 2004 definition.

It does not require a mandatory licence (fewer than five tenants), but it may require an additional licence depending on your council's scheme. Check with your local authority.

"I rent to two couples"

Four tenants, two households, shared facilities. This is an HMO. Again, it falls below the mandatory threshold but could be caught by additional licensing.

"I rent the whole house to a family"

A family — parents and children — is a single household. One household means the property is not an HMO, regardless of how many family members live there.

"My tenants have moved someone in without telling me"

If an additional occupant takes the property over the HMO threshold, you become responsible for compliance. This is one reason why tenancy agreements should include clear provisions about additional occupants and why regular communication with your tenants matters.

Licensing is not just about the application fee — it is a framework that ensures your property meets basic safety and management standards. Treating it as part of good property management, rather than a bureaucratic burden, makes compliance far easier.

Practical Steps for Landlords

If you are a small landlord with one or two properties, here is what to do:

1. Assess your occupancy. Count tenants and households. If three or more tenants form two or more households and share facilities, you have an HMO.
2. Check your council's licensing requirements. Look at mandatory, additional, and selective licensing schemes.
3. Apply promptly if required. Do not wait for the council to contact you. Operating without a licence puts you at immediate financial risk.
4. Meet the conditions. Ensure room sizes, fire safety, facilities, and management standards are all in order before tenants move in.
5. Keep records. Maintain copies of your licence, safety certificates, and inspection reports. You may need to produce these at short notice.

HMO licensing can feel like a lot of paperwork, but the standards it requires — safe rooms, working fire systems, adequate facilities — are things every responsible landlord should want to provide regardless. Getting licensed protects your tenants, protects your investment, and keeps you on the right side of an enforcement regime that is only becoming more active.