Compliance
HMO Compliance Checklist for UK Landlords
The full HMO compliance checklist for UK landlords — licence, fire safety, gas, electrical, room sizes and management standards.
The Landvale Team·Updated 1 July 2026·10 min read
Key takeaways
Any property with 3+ unrelated tenants sharing facilities may be an HMO.
Mandatory licensing applies to properties with 5+ tenants forming 2+ households.
Fire risk assessments, emergency lighting and interlinked alarms are non-negotiable.
Room sizes are legally enforced — 6.51 m² minimum for one adult.
Rent Repayment Orders for unlicensed HMOs can hit 12 months' rent.
What counts as an HMO?
A property is an HMO if at least three tenants forming more than one household share a kitchen or bathroom. Mandatory licensing kicks in at five tenants across two households.
The HMO compliance stack
•Valid HMO licence (mandatory, additional or selective as required).
•Fire Risk Assessment — annual, plus after any change.
•Interlinked mains-powered smoke alarms and CO alarms.
•Emergency lighting on escape routes.
•PAT testing on all landlord appliances.
•Legionella risk assessment.
•Room size compliance (min 6.51 m² for one adult; 10.22 m² for two).
Penalties for non-compliance
Operating an unlicensed HMO exposes you to a Rent Repayment Order of up to 12 months' rent, plus civil penalties of up to £30,000 per property.
Pillar guide
The Complete UK Landlord Compliance Guide
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Frequently asked questions
When you have 5+ tenants across 2+ households sharing facilities. Some councils apply additional or selective licensing at lower thresholds.
