The UK private rented sector is dynamic, and few areas of property investment are as regulated as Houses in Multiple Occupation (HMOs). Designed to protect tenants, improve housing standards, and ensure responsible property management, HMO licensing is a legal requirement that landlords must navigate carefully.
However, the rules are complex, varying depending on the property’s size and location. Whether you are contemplating your first HMO purchase or are an experienced portfolio landlord, it is essential to have clarity on the statutory requirements.
This guide tackles the some of the questions we get asked about HMO licensing on a regular basis, answering your queries on when a licence is required, the application process, minimum room sizes, and the serious consequences of non-compliance. Our aim is to provide concise, direct answers that help you stay compliant, profitable, and informed.
Table of Contents
- What is an HMO License?
- When is an HMO Licence Required?
- Do I need an HMO License for 2 tenants?
- Do I need an HMO License for 3 tenants?
- Do I need an HMO License for 4 tenants?
- How do I get an HMO License?
- How long does an HMO License last?
- How often should an HMO License be renewed?
- How much does an HMO License cost?
- What are the minimum HMO room sizes?
- What is an unlicensed HMO?
- How long does it take to get an HMO License?
What is an HMO License?
An HMO licence is a legal document issued by the local authority (council) that gives permission for a specific property to operate as a House in Multiple Occupation.
Its primary purpose is to ensure that the property meets minimum national safety standards (fire, gas, electrical) and is suitable for the number of occupants living there. It also confirms that the landlord and/or property manager is a ‘fit and proper person’ to manage an HMO.
If your property is a licensable HMO, you are committing a criminal offence if you let it out without a licence or an application for one in place.
When is an HMO Licence Required?
A licence may be required under one of three schemes in the UK:
Mandatory Licensing
This is the national requirement and applies to any HMO that is:
- Rented to five or more people;
- Who form two or more separate households; and
- Who share a toilet, bathroom, or kitchen facility
- This rule applies to all properties of any size or number of storeys across England and Wales.
Additional Licensing
This is a local scheme introduced by councils to cover smaller HMOs (typically those with 3 or 4 tenants) that fall below the mandatory threshold. It is not nationwide and depends entirely on the council’s designation.
We have a comprehensive guide on Additional Licensing that explore this in more detail, with specific details on which areas in the UK require additional HMO licenses.
Selective Licensing
This scheme covers all private rented properties (including single-household lets) in specific geographical areas designated by the council, usually due to concerns over housing conditions or anti-social behaviour. If a property requires an HMO licence, it is usually exempt from Selective Licensing, but it’s vital to check the local area.
Need more detail? For a full breakdown of the legal definitions and safety criteria, read our comprehensive guide: HMO License Requirements in the UK.
Do I Need an HMO Licence for 2 Tenants?
You do not need an HMO licence for a property let to just two unrelated tenants.
The legal definition of a House in Multiple Occupation (HMO) requires at least three people forming more than one household. Since a property with two tenants does not meet this minimum threshold, it is considered a standard single-let property (Use Class C3) and is not subject to any form of HMO licensing (Mandatory or Additional).
Do I Need an HMO Licence for 3 Tenants?
You might need an HMO licence for three unrelated tenants, depending entirely on the property’s location.
- Mandatory Licensing: No. A 3-person HMO does not meet the national threshold of five or more tenants, so it does not require a Mandatory HMO Licence.
- Additional Licensing: Yes, potentially. This type of property is only licensable if the local council has an Additional Licensing scheme in place that specifically covers 3- and 4-person HMOs.
You must check the relevant local authority website or consult our resource: Additional HMO Licensing in the UK to see if your property location is affected.
Do I Need an HMO Licence for 4 Tenants?
You might need an HMO licence for four unrelated tenants, depending entirely on the property’s location.
- Mandatory Licensing: No. A 4-person HMO does not meet the national threshold of five or more tenants, so it does not require a Mandatory HMO Licence.
- Additional Licensing: Yes, potentially. Similar to 3-tenant properties, licensing is only required if a specific Additional Licensing scheme is in force in that area.
If you are letting to 4 or fewer tenants, you must check the local authority website or consult our resource: Additional HMO Licensing in the UK to see if your property location is affected.
How to Get an HMO Licence
The application process is handled entirely by the local council where the property is located and typically follows these steps:
- Preparation: Conduct a detailed measure of all rooms to ensure they meet minimum size standards. Ensure all key safety checks are up-to-date (Gas Safety Certificate, EICR, Fire Risk Assessment).
- Application Submission (Stage 1): Complete the application form on the council’s website, providing details on the landlord, manager, property layout, and all required safety certificates. You pay the initial part of the application fee.
- Council Checks: The council reviews the application and conducts a Fit and Proper Person test on the landlord/manager (checking for criminal convictions, breaches of housing law, etc.).
- Inspection: The council may send an inspector to visit the property to verify safety features (fire alarms, emergency routes) and check room sizes using the Housing Health and Safety Rating System (HHSRS).
- Final Decision (Stage 2): If approved, the second part of the fee is paid, and the licence is issued with specific conditions (e.g., maximum occupancy).
Tip: You must have the correct planning permission (e.g., for Article 4 areas) before a licence can be issued. HMO Checker is designed to analyse a property’s compliance with both planning and licensing requirements.
How Long Does an HMO Licence Last?
A standard HMO licence is granted for a maximum period of five years.
Councils have the discretion to issue a licence for a shorter period (e.g., 2 or 3 years) if there are outstanding management or property issues that need monitoring, or if the council has concerns about the landlord’s compliance record. A shorter licence is often a tool used by the council to ensure remedial works are completed promptly.
How Often Must an HMO Licence Be Renewed?
You must renew the HMO licence before it expires every five years (or less, if the council issued a shorter term). Crucially, it is the licence holder’s responsibility to submit a timely renewal application. While councils often send reminders, these should not be relied upon.
We recommend setting a calendar alert 6-9 months before the expiry date to begin the renewal process, as a lapse in licensing can lead to severe penalties, including fines and Rent Repayment Orders (RROs).
How Much Does an HMO Licence Cost?
The cost of an HMO licence varies significantly between local authorities. There is no national set fee.
For a Mandatory HMO Licence, the total fee usually falls between £800 and £1,500 for the five-year period. Most councils operate a two-stage payment structure: the first stage covering the administration and fit-and-proper test, and the second covering the inspection and ongoing scheme enforcement.
Some councils offer discounts if the landlord or manager is accredited (e.g., through an NRLA-approved scheme).
You must check the ‘Fees and Charges’ section on the relevant local council’s website for the definitive cost.
What is the Minimum Room Size for an HMO?
The national minimum room sizes for sleeping accommodation are mandatory conditions for all HMO licences. These are designed to prevent overcrowding and ensure safety. The floor area must be measured where the ceiling height is 1.5m or greater:
| Occupant | Minimum Usable Floor Area |
| One Person (aged 10+) | 6.51m2 |
| Two Persons (aged 10+) | 10.22m2 |
| One Child (under 10) | 4.64m2 |
For a visual guide and advice on optimising space, please read our dedicated article: Minimum Room Sizes in the UK. You can also use HMO Checker to help you determine the potential number of compliant rooms in a property.
What is an Unlicensed HMO?
An unlicensed HMO is a property that meets the criteria for mandatory or additional licensing but is being operated without the required licence from the local authority. Running an unlicensed HMO is a serious criminal offence with significant consequences for the landlord.
Councils can impose civil penalties of up to £30,000 per offence, or pursue criminal prosecution leading to an unlimited fine. Tenants can also apply to a tribunal for a Rent Repayment Order, which can force the landlord to repay up to 12 months’ rent.
Landlords operating an unlicensed HMO are typically restricted from using a Section 21 notice to evict tenants. In severe cases of non-compliance, landlords can be issued with Banning Orders, prohibiting them from letting or managing properties entirely.
How Long Does it Take to Get an HMO Licence?
The time taken to issue an HMO licence can vary widely between councils, but the process usually takes between 2 and 6 months from initial application to final issue.
Factors that influence the processing time include:
- Completeness of Application: Incomplete or missing documents (e.g., expired safety certificates or poor floor plans) will cause significant delays.
- Council Caseload: Highly active HMO areas (like some London boroughs or major university cities) often have longer processing times.
- Required Works: If the initial inspection identifies necessary remedial works (e.g., upgrading fire doors), the licence will not be issued until these works are completed and verified.
For best results, submit a complete, compliant application well in advance of the property being occupied.
