If you let a property to three or more tenants who form two or more separate households, your property is an HMO — and there is a strong chance it needs a licence. Getting this wrong carries penalties of up to £30,000 per offence, rent repayment orders covering up to 12 months of rent, and the inability to serve valid Section 21 notices. HMO licensing is not optional.
This guide covers every type of HMO licence, when each applies, how to apply, what it costs, and what happens if you operate without one.
What Is an HMO Licence?
An HMO licence is a formal permission granted by your local authority allowing you to operate a house in multiple occupation. It confirms that the property meets minimum safety and amenity standards and that the licence holder (usually the landlord or managing agent) is a fit and proper person to manage an HMO.
Licensing was introduced under the Housing Act 2004 and has been progressively expanded since. The current framework comprises three distinct schemes: mandatory licensing, additional licensing, and selective licensing. Each has different triggers and coverage.
Mandatory HMO Licensing
Mandatory licensing applies across England and Wales to any HMO that meets all of the following criteria:
- The property is occupied by five or more people
- Those people form two or more separate households
- The occupants share one or more basic amenities (toilet, bathroom, or kitchen)
This definition was widened in October 2018. Before that date, mandatory licensing only applied to properties of three or more storeys. The storey requirement was removed, meaning a two-storey house with five unrelated tenants sharing facilities now requires a mandatory licence.
Key points about mandatory licensing:
- It applies regardless of any local council scheme — every local authority in England must operate mandatory licensing
- The licence is property-specific and non-transferable
- A licence is typically granted for five years, though councils can issue shorter licences where there are concerns
- The licence holder must be a "fit and proper person" — councils check for criminal convictions, discrimination, housing law breaches, and financial standing
- Maximum occupancy and room-specific occupancy limits are set as conditions of the licence
If your property houses five or more people from two or more households and you do not hold a mandatory licence, you are committing a criminal offence.
Additional HMO Licensing
Additional licensing is a discretionary scheme that individual local authorities can choose to implement. It extends licensing to HMOs that do not meet the mandatory threshold — typically smaller HMOs with three or four occupants.
Councils must demonstrate that a significant proportion of HMOs in their area are being managed ineffectively enough to cause problems before they can introduce additional licensing. In practice, many university cities, large towns, and London boroughs have active additional licensing schemes.
How additional licensing differs from mandatory:
- Covers smaller HMOs (typically 3–4 occupants from 2+ households)
- Only applies in areas where the council has specifically adopted it
- May cover the whole council area or specific wards/postcodes
- Licence conditions are broadly similar to mandatory licensing but may include council-specific requirements
- Duration is typically five years, matching the scheme's lifespan
Check your local authority. Additional licensing schemes vary enormously. Some councils have comprehensive schemes covering the entire borough; others have no additional licensing at all. The only reliable way to confirm is to check directly with your council's private sector housing team or their website.
Selective Licensing
Selective licensing goes further than both mandatory and additional schemes. It applies to all privately rented properties in a designated area — not just HMOs.
If your HMO is in a selective licensing area, you need a selective licence even if the property is a single-let that would not normally require an HMO licence. Selective licensing is designed to address areas with low housing demand, significant anti-social behaviour, poor property conditions, high migration, high deprivation, or high crime.
Key features of selective licensing:
- Applies to all private rented properties, not just HMOs
- Introduced by local authorities with Secretary of State approval (for schemes covering more than 20% of the area or 20% of rented properties)
- Licence conditions focus on property management standards, tenant referencing, and anti-social behaviour
- Does not replace mandatory or additional licensing — you may need both an HMO licence and a selective licence for the same property
Currently, over 60 local authorities across England operate selective licensing schemes, with more being proposed each year.
Do I Need an HMO Licence? A Decision Framework
Answer these questions in order:
1. Is the property occupied by 5+ people forming 2+ households sharing amenities? Yes → You need a mandatory HMO licence. No exceptions.
2. Is the property an HMO with 3-4 occupants in an area with additional licensing? Yes → You need an additional HMO licence. Check your council.
3. Is the property a private rental in a selective licensing area? Yes → You need a selective licence (and possibly an HMO licence too).
4. None of the above apply? You probably do not need a licence, but confirm with your local authority. Some councils' definitions of HMO are broader than the statutory minimum.
The HMO Licence Application Process
Step 1: Confirm Which Licence You Need
Contact your local authority's private sector housing team or check their website. Many councils have online HMO registers and licence checkers. Identify whether you need a mandatory, additional, or selective licence (or a combination).
Step 2: Prepare Your Property
Before applying, ensure the property meets the council's standards. Common requirements include:
- Fire safety: Mains-wired interlinked smoke alarms on every floor, fire doors to kitchens and bedrooms (in larger HMOs), fire blankets in kitchens, clear escape routes
- Room sizes: Minimum 6.51 sqm for a single person, 10.22 sqm for two people (sleeping rooms)
- Kitchen facilities: Adequate cooking, food preparation, and storage for the number of occupants
- Bathroom facilities: Sufficient toilets, baths/showers, and wash basins for the number of occupants
- Heating and insulation: Adequate fixed heating in every room
- General condition: Good structural repair, no serious hazards under the Housing Health and Safety Rating System (HHSRS)
Councils may inspect before or after granting the licence. Applying with a non-compliant property will result in conditions being attached, delays, or refusal.
Step 3: Submit the Application
Most councils now accept online applications. You will need to provide:
- Property address and description (number of rooms, storeys, occupants)
- Proposed licence holder details and fit and proper person declaration
- Manager details (if different from the licence holder)
- Floor plans showing room sizes
- Gas safety certificate
- Electrical installation condition report (EICR)
- Energy performance certificate (EPC)
- Fire risk assessment
- Evidence of fire safety measures installed
- Proof of buildings insurance
Step 4: Pay the Fee
Licence fees are set by each council individually and vary enormously — from under £500 to over £1,500 for a five-year licence. Fees are covered in detail in our HMO licence costs guide.
Step 5: Inspection and Decision
Some councils inspect before issuing the licence; others issue a draft licence and inspect within the first year. The council will review your application, check for any outstanding enforcement action, and assess whether you are a fit and proper person to hold the licence.
Processing times vary from 4 weeks to 6 months depending on the council's backlog. You are legally permitted to operate while your application is being processed, provided you submitted it before the property was occupied (or within any grace period the council specifies).
Step 6: Licence Issued with Conditions
The licence will specify:
- Maximum number of occupants for the property
- Maximum occupancy per room
- Required safety measures
- Management standards to maintain
- Specific conditions (e.g., waste management, tenant referencing requirements)
Breaching licence conditions is a separate offence from operating without a licence.
Fit and Proper Person Test
The licence holder and any manager must pass the fit and proper person test. Councils consider:
- Criminal convictions — particularly for fraud, dishonesty, violence, drugs, sexual offences, or housing-related offences
- Unlawful discrimination — under the Equality Act 2010
- Housing law breaches — previous enforcement notices, prosecutions, or civil penalties for housing offences
- Contravention of HMO management regulations
- Association with anyone who would fail the test — if a company director or partner would fail, the company fails too
A failed fit and proper person assessment means the licence will be refused. There is a right of appeal to the First-tier Tribunal.
HMO Licensing and Mortgage Lenders
HMO licensing is directly relevant to your mortgage. Most HMO mortgage lenders require a valid licence as a condition of lending — and many want to see it at application stage, not just at completion.
If you are buying an HMO or remortgaging one, ensure the licence is in place and in the correct name before you apply for finance. A property without the required licence is effectively unmortgageable with mainstream HMO lenders.
Learn more about HMO mortgages and how licensing affects your application.
Penalties for Operating Without a Licence
The penalties for operating an unlicensed HMO are severe:
Criminal prosecution: Unlimited fine on conviction in the magistrates' court. Councils increasingly use this route for repeat offenders.
Civil penalties: Up to £30,000 per offence as an alternative to prosecution. Some councils have issued penalties well above £10,000 for first offences.
Rent repayment orders: Tenants (or the council, for housing benefit cases) can apply to the First-tier Tribunal for repayment of up to 12 months' rent. On a six-bed HMO at £500/room/month, that is up to £36,000.
Section 21 restrictions: You cannot serve a valid Section 21 (no-fault eviction) notice while the property is unlicensed. Any notice served is invalid.
Banning orders: Repeat offenders can be placed on the rogue landlord database and subject to banning orders preventing them from letting property.
The financial exposure from operating without a licence dwarfs the cost of the licence itself. There is no rational reason to avoid licensing.
Renewing Your HMO Licence
Licences are typically granted for five years. Renewal is not automatic — you must submit a new application before the existing licence expires.
Start the renewal process at least three months before expiry. Council processing times are unpredictable, and operating with an expired licence (without a pending application) carries the same penalties as operating without a licence.
Renewal applications follow broadly the same process as initial applications, with updated documentation required. Some councils offer reduced fees for renewals.
For Tenants: How to Check If Your HMO Is Licensed
If you are renting a room in a shared house, you can check whether the property holds a valid licence. Most councils maintain a public register of HMO licenced properties — search your council's website for "list of HMO licenced properties" or "HMO public register". You can also contact the council's private sector housing team directly.
If your landlord does not have an HMO licence and the property requires one, you have several options. You can report the property to the council, who may take enforcement action. You can also apply to the First-tier Tribunal for a rent repayment order covering up to 12 months of rent. The fact that you live in an HMO licenced property (or one that should be licensed) does not affect your tenancy rights — your tenancy remains valid regardless of the property's licensing status.
When searching for HMO licenced properties to rent, checking the council register before signing a tenancy agreement gives you confidence that the property meets minimum safety and management standards.
For more on this topic, see our guide to HMO Planning Permission.
Next Steps
HMO licensing is a non-negotiable part of operating an HMO in the UK. The system is not complicated, but the penalties for getting it wrong are disproportionately severe. Confirm which licence you need, prepare your property to meet the required standards, and submit your application in good time.
If you are financing an HMO purchase or remortgaging an existing property, your licence status will be one of the first things your lender checks. Contact The HMO Mortgage Broker to discuss how licensing affects your mortgage application — we have arranged over £187 million in HMO finance since 2013 and work with over 30 specialist lenders.
Frequently Asked Questions
Who needs an HMO licence?
You need a mandatory HMO licence if your property has 5 or more tenants from 2 or more separate households sharing facilities. Additionally, your local council may require licences for smaller HMOs through additional licensing schemes, or for all rental properties through selective licensing. The licence holder is usually the property owner or a designated managing agent acting on their behalf.
How long does it take to get an HMO licence?
Processing times vary by council, typically 4-12 weeks from submission of a complete application. Some councils issue a draft licence for comment before the final licence. You can usually let the property while the application is being processed, provided you have evidence of submission and are meeting all safety standards. Incomplete applications cause the most delays.
What conditions are attached to an HMO licence?
Standard conditions include: maximum number of occupants per room, provision of adequate facilities (bathrooms, kitchens), annual gas safety certificates, 5-yearly electrical safety inspections, working fire alarms and extinguishers, provision of waste disposal facilities, and maintaining the property's interior and exterior. Additional conditions may be imposed based on the specific property and local policies.
Can my HMO licence be revoked?
Yes, a council can revoke an HMO licence if: the licence holder is no longer a fit and proper person, the property no longer meets licensing standards, licence conditions are being consistently breached, or there is evidence of serious management failures. Before revocation, councils usually issue improvement notices and warnings, giving you the opportunity to remedy issues.
