PAT Testing for HMO Landlords in London: Obligations, Frequency and Costs
HMO landlords in London must understand PAT testing obligations, which appliances need testing and how often, to stay compliant.
For HMO (House in Multiple Occupation) landlords in London, PAT testing is not just good practice — it is a legal and licensing obligation that directly affects your ability to operate. Getting it wrong can result in licence suspension, prosecution under the Housing Act 2004 and, more critically, serious harm to tenants.
What Is PAT Testing?
Portable Appliance Testing (PAT) is the routine inspection and electrical testing of appliances to confirm they are safe to use. It involves a visual inspection and, where appropriate, electrical tests using specialist equipment to check insulation resistance, earth continuity and other safety parameters.
Legal Obligations for HMO Landlords
The Housing Act 2004 and the Management of Houses in Multiple Occupation (England) Regulations 2006 require HMO managers to ensure all electrical appliances provided are maintained in safe working order. Where a licensing condition references electrical safety, PAT testing of landlord-supplied appliances is the recognised method of demonstrating compliance.
Additionally, if a tenant is injured by a faulty appliance you supplied, failure to carry out PAT testing will be used as evidence of negligence in any civil or criminal proceedings.
How Often Should PAT Testing Be Done?
There is no single universal interval mandated by law, but industry guidance and most HMO licence conditions follow these conventions:
- HMO properties — annually for most appliances in communal areas and high-risk environments
- Student accommodation — annually, typically at tenancy changeover
- Low-risk environments — every two to four years for office-type equipment, though this rarely applies to HMOs
- New appliances — should be visually inspected before first use; formal testing within 12 months
Check your specific HMO licence conditions — many London boroughs explicitly state annual PAT testing as a requirement.
Which Appliances Need Testing?
Any electrical appliance supplied by the landlord that is connected to the mains and can be moved requires testing. In a typical HMO this includes:
- Washing machines, tumble dryers and dishwashers
- Fridges and freezers
- Microwaves, kettles and toasters in communal kitchens
- Televisions and electric heaters in communal areas
- Vacuum cleaners and other communal cleaning equipment
- Extension leads and multi-way adaptors (these fail frequently)
Fixed electrical appliances such as cooker hoods wired directly to a fused connection unit are not covered by PAT testing — these are assessed under your periodic electrical inspection.
Costs in London
PAT testing is priced per item or by day rate. Typical London pricing:
- Per item: £1.50–£3.50, with volume discounts for 20+ appliances
- Day rate: £150–£250, suitable for larger HMOs with 30+ appliances
- Minimum call-out: typically £50–£80 regardless of item count
You should receive a detailed PAT register listing each appliance, its test result, the date and the tester's details. This is your compliance evidence for licence inspections.
Choosing a PAT Tester
PAT testing does not legally require a qualified electrician, but for HMO compliance you should use someone with a recognised qualification such as City and Guilds 2377, and who carries adequate liability insurance. Always ask for a sample register before booking to confirm the documentation standard.