Gas Safety Certificates for landlords
Annual inspections, tenant notification requirements, and the penalties for missing the deadline.
What is a Gas Safety Certificate?
A Gas Safety Certificate (CP12) is issued after a registered Gas Safe engineer inspects all gas appliances, fittings, and flues in a rental property. It confirms that everything is safe to use.
Is it a legal requirement?
Yes. Under the Gas Safety (Installation and Use) Regulations 1998, every landlord who lets a property with a gas supply must have a valid Gas Safety Certificate. This applies even if the property has no gas appliances. If there is a gas meter or supply pipe, an inspection is still required.
How often do you need one?
Every 12 months. The certificate is valid for one year from the date of the inspection. You can renew up to 2 months early without losing time. The new certificate runs from the expiry date of the old one, not the inspection date.
Who can carry out the inspection?
Only a Gas Safe registered engineer. You can check an engineer's registration at the Gas Safe Register website. Always ask to see their Gas Safe ID card before they start work.
What must you do with the certificate?
- New tenants: Give a copy of the current certificate to the tenant before they move in
- Existing tenants: Give a copy within 28 days of the inspection
- Keep records: Retain copies for at least 2 years
What happens if you don't have one?
| Penalty | Details |
|---|---|
| Civil penalty | Up to £6,000 |
| Criminal prosecution | Unlimited fine and/or up to 6 months in prison |
| Possession blocked | Courts can refuse possession orders if gas safety is not up to date |
| Insurance voided | Many landlord insurance policies require a valid CP12 |
The Health and Safety Executive (HSE) and local councils both have enforcement powers. If a tenant is harmed, criminal prosecution can lead to imprisonment.
Common mistakes
- Forgetting about communal areas. If you own the freehold and there are gas supplies in communal areas, those need inspecting too.
- Assuming no appliances means no inspection. A gas supply without appliances still needs checking. The pipework and meter must be safe.
- Booking too late. Engineers get booked up, especially in autumn. Start booking at least 6 weeks before expiry.
- Not keeping proof of service. If a tenant claims they never received the certificate, you need evidence you gave it to them.
How LetShield helps
LetShield tracks your Gas Safety Certificate expiry date and sends email reminders at 60, 30, 14, and 7 days before it expires. The proof-of-service audit trail records when and how you gave the certificate to your tenant.