Gas Safety Certificate (CP12) for Wales landlords
If your rental property has any gas appliances, flues or pipework, a Gas Safe registered engineer must inspect them every year and issue a Gas Safety Record (often called a CP12). You must give a copy to existing tenants within 28 days of the check, and to new tenants before they move in.
Every 12 months
All four UK nations
Legal requirement
Why it matters
Letting a property with gas appliances without a valid gas safety check is a criminal offence enforced by the Health and Safety Executive. It can lead to fines and, in serious cases, prosecution, and it may invalidate your landlord insurance.
How to stay compliant
Track gas safety the easy way
MTD Landlord Services keeps your Wales certificates and tenant checks in one place, with automatic email reminders before anything expires, so nothing slips through. It is built for Wales landlords alongside your Making Tax Digital records.
Get StartedFrequently asked questions
How often is a gas safety certificate needed?
Every 12 months, for the life of any gas appliance, flue or pipework supplied for the tenant’s use.
Who can carry out the check?
Only a Gas Safe registered engineer can carry out the inspection and issue the record.
Do I need one if the property has no gas?
No. A gas safety check is only required where there are gas appliances, flues or pipework in the property.
Legal basis: Gas Safety (Installation and Use) Regulations 1998 reg 36; NI 2004 reg 36 - hse.gov.uk/gas/domestic/faqlandlord.htm
This is general information for landlords, not legal advice. Rules change and can vary by case, so always confirm current requirements with official guidance for your nation.