Gas safety record (CP12)
The record a Gas Safe registered engineer gives after the yearly safety check of every gas appliance and flue a landlord provides. Required for every let home with gas.
In short: A gas safety record, often called a CP12, shows that a let home's gas appliances, fittings and flues were checked by a Gas Safe registered engineer within the last twelve months. Landlords in England must have one every year, give tenants a copy and keep records for two years.
Safety certificates and the home
England. Checked against the law on 5 October 2026. Information, not legal advice.
The duty is in regulation 36 of the Gas Safety (Installation and Use) Regulations 1998:
- A check of every gas appliance and flue the landlord provides at least every 12 months.
- A copy to existing tenants within 28 days of the check, and to new tenants before they move in.
- Records kept for at least two years.
- A check done up to two months before the due date keeps the original anniversary.
Gas cookers and fires the landlord provides are included; appliances the tenant owns are not, though the pipework is.
Letting without a valid record is a criminal offence and can block possession on some grounds.
Read more: The certificates every let needs (gas, electrical, EPC, alarms)
Related: Gas Safe register, Smoke and carbon monoxide alarms, EICR
Where this comes from
Guides on this
Guide
The certificates every let needs (gas, electrical, EPC, alarms)
A private let in England needs a gas safety record every year, an electrical report every five years, an EPC rated E or better, and working smoke and carbon monoxide alarms. What each one is, how often, and what happens if you let without it.
Guide
What is the minimum EPC rating to let a home in England?
A home you let in England needs an EPC rated E or better, unless an exemption is on the PRS Exemptions Register. The planned rise to C from 1 October 2030 is government policy but still needs new law.
Guide
Do I need a licence to let my property? HMO, additional and selective licensing
Five or more people from two or more households need a mandatory HMO licence. Your council may also license smaller HMOs, or every let in an area. How to check, and what happens without one.
Guide
How often does a landlord need an EICR?
Every private let in England needs the electrics inspected and tested at least every five years. Copies to the tenant within 28 days, urgent repairs within 28 days, and a council fine of up to £40,000.
Related terms
Glossary
Category 1 hazard
The most serious level of hazard under the HHSRS. When a council finds one in a home, it must take enforcement action.
Glossary
EICR codes: C1, C2, C3 and FI
The codes an electrician uses on an EICR: C1 danger present, C2 potentially dangerous, FI further investigation needed, C3 improvement recommended.
Glossary
Electrical installation condition report (EICR)
A report by a qualified electrician on the safety of a home's fixed wiring. Every private let in England needs one at least every five years.
Glossary
Energy performance certificate (EPC)
A certificate rating a home's energy efficiency from A (best) to G, valid for ten years. Needed before a home is let or sold, and shown in adverts.
Glossary
Gas Safe register
The official register of businesses and engineers legally allowed to work on gas appliances and fittings in Great Britain. Only a registered engineer may do a landlord's gas check.
Glossary
Housing Health and Safety Rating System (HHSRS)
The method councils in England use to assess hazards in homes, such as damp, cold, falls and fire, and decide whether to take action against the landlord.