Landlord Gas Safety Certificates (CP12): Everything You Need to Know

A CP12 is an official document confirming that all gas appliances, flues, and pipework in a rental property have been checked by a Gas Safe registered engineer and are safe to use.

By law, you must provide a copy to your tenants within 28 days of the check being carried out.

Yes. Under the Gas Safety (Installation and Use) Regulations 1998, landlords must arrange annual gas safety checks on all gas appliances in their rental properties.

This applies to private landlords, housing associations, letting agents managing properties, and HMO (House in Multiple Occupation) operators.

A Gas Safe registered engineer checks that all gas appliances work correctly and safely, inspects flues and ventilation, tests for gas leaks, checks gas pressure and flow rates, verifies all safety devices are functioning, and issues the CP12 record.

Failing to provide a valid CP12 certificate is a criminal offence. Penalties include fines of up to £6,000, imprisonment for up to 6 months, invalidation of your landlord insurance, difficulty evicting tenants through legal channels, and potential prosecution if a tenant is harmed by a faulty gas appliance.

Landlord gas safety certificates at Empower Gas start from £55 for a single appliance. We offer discounts for landlords with multiple properties and can set up annual reminders so you never miss a renewal.

Gas safety checks must be carried out every 12 months. You can arrange the check up to 2 months before your current certificate expires without losing any time on your renewal cycle — similar to the MOT rule for vehicles.