Compliance & Safety7 min readLast reviewed 2 July 2026
Gas Safety Certificate (CP12) Requirements for Landlords in England
Annual gas safety checks are a legal requirement for every rented property in England. Learn CP12 obligations, timelines, and penalties.
England only. This guide applies to private rented property in England. Wales and Scotland have separate legal frameworks — dedicated guides will be published separately.
Key takeaways
- Landlords must arrange an annual gas safety check by a Gas Safe registered engineer for every rented property in England.
- A copy of the CP12 certificate must be given to tenants before they move in and within 28 days of each annual check.
- Gas appliances, pipework, and flues in the property must be inspected.
- Failure to comply is a criminal offence with fines up to £6,000 per appliance and possible imprisonment.
- Missing gas safety certificates invalidate Section 21 notices until abolition.
What is a gas safety certificate (CP12)?
The Gas Safety (Installation and Use) Regulations 1998 require landlords in England to ensure all gas appliances, flues, and pipework in rented properties are maintained in a safe condition. An annual inspection by a Gas Safe registered engineer produces a Landlord Gas Safety Record — commonly called a CP12.