Gas Safety Certificate

Gas Safety Certificate

As a landlord, making sure your property is gas-safe is not just good practice — it is a legal requirement. Every rental property with gas appliances must undergo an annual inspection carried out by a Gas Safe registered engineer. After this inspection, you must be issued with a Landlord Gas Safety Certificate, commonly called a CP12. This certificate confirms that boilers, cookers, fires, flues and pipework have been checked and are operating safely.

Having your gas appliances inspected every year is essential for protecting your tenants from risks such as carbon monoxide poisoning, gas leaks, fires and explosions. Regular checks also help identify faults early, preventing costly repairs and avoiding long-term damage to your property. On top of the safety benefits, maintaining a valid CP12 is often a condition of landlord insurance, meaning failure to comply can result in rejected claims if something goes wrong.

Importantly, the law requires landlords to keep their gas systems properly maintained and to issue a copy of the CP12 to tenants within 28 days of the inspection.A gas safety check is separate from routine maintenance. If you also need yearly servicing guidance for the boiler itself, read our landlord boiler service requirements guide.

Not having a valid certificate is a criminal offence and can lead to substantial fines or legal action from the local authority or the Health and Safety Executive. It can also restrict certain legal rights, such as the ability to serve a Section 21 notice in England

Keeping your CP12 up to date each year is a simple and effective way to meet your legal obligations, protect your tenants and safeguard your property. It demonstrates professionalism, responsibility and a commitment to safety — all of which matter just as much to your tenants as they do to you.

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Cost Estimation

Landlord safety gas certificate costs start from £90+ depending on the number of gas appliances and property size. If you are comparing servicing and compliance costs together, our boiler service cost guide explains typical pricing and what affects it.