What is a CP12 Gas Safety Certificate?

Quick answer: A CP12 is a Landlord Gas Safety Record — a legal requirement for all rented properties with gas appliances. It must be renewed every 12 months and carried out by a Gas Safe registered engineer.

What Does CP12 Stand For?

CP12 stands for CORGI Proforma 12 — the original form used when CORGI was the gas registration body (before Gas Safe Register took over in 2009). The name has stuck, and most people still refer to the Landlord Gas Safety Record as a CP12. You may also see it called a Gas Safety Certificate (GSC) or Landlord Gas Safety Certificate.

Who Needs a CP12?

Under the Gas Safety (Installation and Use) Regulations 1998, all landlords who let properties with gas appliances must:

Have all gas appliances, pipework and flues checked annually
Use only a Gas Safe registered engineer
Give a copy of the certificate to existing tenants within 28 days
Give a copy to new tenants before they move in
Keep records for at least 2 years

Legal Consequences

Failing to have a valid CP12 is a criminal offence. Landlords can face an unlimited fine and up to 6 months in prison. Your insurance may also be invalidated, and you could be held liable if a tenant is harmed by a gas incident.

What Does a CP12 Inspection Cover?

Boiler and all gas appliances (cooker, fire, etc.)

Gas pipework throughout the property

Flues and ventilation checks

Safety devices and controls

Carbon monoxide risks assessed

How Much Does a CP12 Cost?

At NK Gas Services, CP12 certificates start from £65 for a single property. We offer portfolio discounts for landlords with multiple properties — call us to discuss. We can often issue the certificate same-day across all West Midlands postcodes.