HMO licensing: the complete guide for landlords

What is an HMO?

A House in Multiple Occupation (HMO) is a property rented out by at least 3 people who are not from the same household but share facilities such as a bathroom or kitchen. The legal definition is set out in sections 254 to 260 of the Housing Act 2004.

The most common example is a shared house where each tenant has their own bedroom but shares the kitchen, bathroom, and living areas. Bedsits, some converted flats, and student houses also frequently qualify as HMOs.

Types of HMO licensing

There are three types of licensing that can apply, each with different triggers:

1. Mandatory HMO licensing (Part 2, Housing Act 2004)

This applies across all of England. You must have a licence if your property:

• Has 5 or more occupants
• They form 2 or more separate households
• They share one or more basic amenity (toilet, bathroom, kitchen)

This is a national requirement. It does not matter where in England the property is located or what the local authority policy is. If the property meets these criteria, it must be licensed.

2. Additional licensing (Part 2, Housing Act 2004)

Local authorities can introduce additional licensing schemes that cover smaller HMOs that do not meet the mandatory threshold. Typically this covers:

• Properties with 3 or 4 occupants forming 2 or more households
• Sometimes properties above or below commercial premises
• Sometimes properties in specific geographic areas

Additional licensing is not automatic. A local authority must consult on and formally designate the scheme. Not all areas have one.

3. Selective licensing (Part 3, Housing Act 2004)

Selective licensing goes even further. A local authority can require a licence for all private rented properties in a designated area, regardless of whether they are HMOs or not.

Selective licensing is intended to address areas with low housing demand, significant antisocial behaviour, poor property conditions, high levels of migration, high levels of deprivation, or high crime.

How to check if you need a licence

1. Check if mandatory licensing applies. Count the occupants and households. If you have 5 or more people from 2 or more households sharing facilities, you need a mandatory HMO licence.
2. Check your local authority website. Search for "HMO licensing" or "additional licensing" or "selective licensing" on your local council's website. This will tell you if they have any additional or selective schemes in force.
3. Contact your local authority directly if you are unsure. Their private sector housing team can tell you whether your property needs a licence.

What does a licence cost?

Licence fees vary by local authority and typically range from £500 to £1,500 for a 5-year licence. Some authorities charge more for larger HMOs. The fee usually covers the cost of processing the application and any inspections.

Licence conditions

Every HMO licence comes with conditions that you must comply with. Standard conditions typically include:

Fire safety

• Working fire alarms on every floor (often mains-wired and interlinked for larger HMOs)
• Fire doors to bedrooms, kitchens, and stairways
• Clear escape routes
• Fire blankets and/or extinguishers in kitchens
• Emergency lighting in common areas (for larger HMOs)

Room sizes

Minimum room sizes for sleeping accommodation:

Any room below the minimum size cannot be used as sleeping accommodation. The licence will specify the maximum number of occupants.

Kitchen and bathroom ratios

• Typically one bathroom or shower room per 5 occupants
• Typically one kitchen or cooking area per 5 occupants
• Adequate food preparation and storage facilities

Management standards

• Keep common areas clean, in good repair, and free from hazards
• Maintain the structure and exterior in good repair
• Ensure adequate refuse disposal facilities
• Provide adequate heating, lighting, and ventilation
• Display the licence prominently in the property or make it available to tenants

What are the penalties?

The penalties for HMO licensing offences are among the most severe in landlord law:

Rent Repayment Orders

If you operate an HMO without a licence, your tenants (or the local authority) can apply to the First-tier Tribunal for a Rent Repayment Order (RRO). Under the Renters' Rights Act 2025 amendments, this now covers up to 24 months of rent (doubled from the previous 12 months), and the tribunal must award the maximum amount unless there are exceptional circumstances.

12 months rent repayment

On top of the RRO, a tenant in an unlicensed HMO can apply to the tribunal for a repayment of up to 12 months' rent under section 72 of the Housing Act 2004. This is separate from the RRO.

The application process

A typical HMO licence application requires:

1. Completed application form (online or paper, depending on the authority)
2. Floor plan showing room dimensions and layouts
3. Gas Safety Certificate (current CP12)
4. EICR (satisfactory report)
5. EPC (minimum Band E)
6. Fire safety risk assessment
7. Evidence of smoke and CO alarms
8. Proof of ownership or management
9. DBS check (some authorities require this for the licence holder and manager)
10. Fee payment

The application process typically takes 8 to 16 weeks. Some authorities issue a licence quickly; others have significant backlogs.

Common mistakes

• Not realising your property is an HMO. If you rent to 3 or more unrelated people, check the definition carefully.
• Counting households wrong. A couple counts as one household. Two friends who met through a flat share are two separate households.
• Ignoring additional and selective licensing. Just because you do not meet the mandatory threshold does not mean you do not need a licence. Check your local authority.
• Not meeting licence conditions. Getting the licence is only the start. You must comply with all conditions for the full licence period.
• Letting the licence expire. Most HMO licences last 5 years. You must apply for renewal before it expires.

How LetShield helps

LetShield flags HMO status based on the property details you enter and tracks your licence expiry date. You will receive reminders well in advance of renewal deadlines. The compliance dashboard shows whether your property needs a licence and whether your current licence is valid, so you never accidentally operate without one.