--- title: "Gas safety certificate for landlords: the CP12 rules" description: "A gas safety check every 12 months by a Gas Safe registered engineer, a copy to tenants within 28 days, records kept for two years. What landlords must do." url: "https://redilet.app/guides/gas-safety-certificate" tokens: 1230 --- Landlord guide · Gas safety # Gas safety certificate (CP12) for landlords You need a gas safety check **every 12 months** by a **Gas Safe registered engineer**. Give a copy of the record to existing tenants within 28 days, and to new tenants before they move in. ## The short version Every gas appliance and flue you provide for tenants needs an annual safety check. The engineer records it on a gas safety record, often called a CP12. Keep each record for at least two years. You'll also upload the record when you register the property, if it has a gas supply. ## What the check covers HSE says landlords must check the gas appliances, permanent or portable, and flues that they own and provide for tenants. Only a Gas Safe registered engineer can do the check. The back of their ID card shows the gas work they are qualified for. ## When the next check is due The deadline is exactly 12 months after the previous check. You can have it done up to 2 months early and keep the original deadline, so an early check doesn't shorten the year. If you use that flexibility, keep each record until two further checks have been done. ## Who gets a copy, and when - Existing tenants: within 28 days of the check - New tenants: before they move in - The register: when you register the property, and a new record within 28 days of the old one expiring ## What the record must show - Each appliance or flue checked, and where it is - The engineer's name, registration number and signature - The date of the check and the property address - Your name and address, or your agent's - Any safety defects found and what was done about them ## What Redilet does and doesn't do Redilet's free checker reads your gas safety record and flags one that has expired or is close to it. It can't tell whether the appliances are safe. Only a Gas Safe registered engineer can do that. ## Official sources - [Gas safety check records and what to keep (HSE)](https://www.hse.gov.uk/gas/landlords/gassaferecord.htm) - [Gas safety checks: who needs them (HSE)](https://www.hse.gov.uk/gas/landlords/safetycheckswho.htm) - [Gas safety checks: who can do them (HSE)](https://www.hse.gov.uk/gas/landlords/safetycheckswhocan.htm) - [Register your rental property service: guidance for landlords (GOV.UK)](https://www.gov.uk/guidance/register-your-rental-property-service-guidance-for-landlords) Checked on 5 November 2026. Check them before you act. This page is researched information, not legal advice. ## Frequently asked questions ### Is a CP12 the same as a gas safety certificate? Yes, in practice. HSE calls it a gas safety record. CP12 is a common name for the form many engineers use. ### Does a property with no gas supply need one? No. The register asks for a gas safety certificate only if the property has a gas supply. ### Do I need a new check when a new tenant moves in? Not if the current record is still in date. New tenants must get a copy before they move in. [Check my certificates →](https://redilet.app/check?src=guide-gas-safety-certificate&via=md) ## Related pages - [Renters' Rights Act timeline](https://redilet.app/guides/renters-rights-act-timeline) - [EICR (electrical safety report)](https://redilet.app/guides/eicr-landlord-electrical-safety) - [EPC minimum rating](https://redilet.app/guides/epc-minimum-rating-rental-property) - [Tenancy deposit protection](https://redilet.app/guides/tenancy-deposit-protection) - [What the £65 fee covers](https://redilet.app/guides/rental-property-registration-fee) - [Holiday let rules in England](https://redilet.app/guides/holiday-let-safety-certificates-england) - [Scotland's short-term let licence documents](https://redilet.app/guides/short-term-let-licence-scotland-documents) - [Holiday lets in Wales: registration and safety](https://redilet.app/guides/holiday-let-registration-wales) - [Register your rental property in the West Midlands](https://redilet.app/register-your-rental-property/west-midlands) - [Register your rental property in the East of England](https://redilet.app/register-your-rental-property/east-of-england) - [Register your rental property in the East Midlands](https://redilet.app/register-your-rental-property/east-midlands) - [Register your rental property in the South East](https://redilet.app/register-your-rental-property/south-east) - [Register your rental property in the Yorkshire and Humber](https://redilet.app/register-your-rental-property/yorkshire-and-humber) - [Register your rental property in the North West](https://redilet.app/register-your-rental-property/north-west) - [Register your rental property in the North East](https://redilet.app/register-your-rental-property/north-east) - [Register your rental property in London](https://redilet.app/register-your-rental-property/london) - [Register your rental property in the South West](https://redilet.app/register-your-rental-property/south-west)