Gas Safety Certificate (CP12)
Every gas appliance in a rented property must be inspected annually by a Gas Safe registered engineer. The resulting certificate (CP12) must be provided to tenants and records kept for at least 2 years.
Your obligations
- 1Annual inspection of all gas appliances, flues and pipework
- 2Engineer must be Gas Safe registered (check at gassaferegister.co.uk)
- 3Provide existing tenants with a copy within 28 days of inspection
- 4Provide new tenants with a copy before they move in
- 5Retain records for a minimum of 2 years
Consequences of non-compliance
- Failure is a criminal offence
- Unlimited fine in the Magistrates' Court
- Up to 6 months imprisonment in serious cases
- Section 21 eviction notice becomes invalid
- Local authority can serve a Remedial Notice
Practical tips
- →Book your engineer at least 4–6 weeks in advance — especially in winter when they get busy
- →LetCompliance sends reminders 90, 30, 14, 7 and 1 day before expiry
- →Keep a digital copy in your document vault — inspectors can request it at any time
Legal reference: Gas Safety (Installation and Use) Regulations 1998