If you let residential property in England with gas appliances, you are legally required to hold a valid gas safety certificate. This is not optional and not something you can put off. The Gas Safety (Installation and Use) Regulations 1998 impose strict obligations on landlords, and failure to comply can result in heavy fines, prosecution, and even imprisonment. Here is everything you need to know.
What the Law Requires
Under the Gas Safety (Installation and Use) Regulations 1998, every landlord must ensure that all gas appliances, fittings, and flues in a rental property are checked for safety at least once every 12 months. This applies to boilers, gas fires, gas cookers, gas hobs, and any other gas-burning appliance installed in the property. It also covers pipework and flues that serve those appliances. The check must be carried out by a Gas Safe registered engineer. Gas Safe is the official registration body for gas engineers in the United Kingdom, and only engineers on the Gas Safe register are legally permitted to work on gas installations.
The Gas Safety Certificate
After each annual check, the engineer will issue a Gas Safety Record, commonly called a gas safety certificate or CP12. This document records the results of the inspection, including the condition of each appliance, any defects found, and whether the appliances are safe to use. You must keep a copy of each gas safety record for at least two years. If you have had the property for several years, you should have a file of certificates going back at least two years at all times.
Providing the Certificate to Tenants
You must give a copy of the gas safety certificate to each existing tenant within 28 days of the annual check being completed. For new tenants, you must provide a copy before they move in. This requirement is absolute. You cannot wait for the tenant to ask for it, and you cannot rely on the engineer leaving a copy at the property. You need to actively provide it and keep a record that you did so, ideally by getting the tenant to sign an acknowledgement or sending it by email with a read receipt.
What Happens If You Do Not Comply
The consequences of failing to comply with the Gas Safety Regulations are serious. The Health and Safety Executive can prosecute landlords who fail to maintain gas appliances or carry out annual checks. Fines are unlimited, and in the most serious cases, landlords can face up to six months' imprisonment on summary conviction, or up to two years on indictment. If a tenant is injured or killed as a result of a faulty gas appliance, the penalties are far more severe. Beyond the criminal penalties, failing to have a valid gas safety certificate can also affect your ability to serve valid notices under the Housing Act 1988. Under the Renters' Rights Act 2025, which comes into force on 1 May 2026, possession proceedings under Section 8 may be challenged if you cannot demonstrate compliance with your gas safety obligations.
Common Mistakes Landlords Make
There are several common mistakes to avoid. First, do not let your certificate lapse. The check must be done every 12 months, and if you miss the deadline by even one day, you are technically non-compliant. Many landlords book the check a few weeks before the expiry date to avoid any risk of lapsing. Second, make sure your engineer is actually Gas Safe registered. You can check this on the Gas Safe register website by entering their registration number. Third, do not confuse a boiler service with a gas safety check. A boiler service is a maintenance procedure, while a gas safety check is a legal safety inspection. Your engineer can do both at the same time, but they are separate things and you need the formal CP12 record.
Planning Ahead
Book your annual gas safety check well in advance of the expiry date. Keep digital copies of all certificates and proof of service on tenants. If you manage multiple properties, use a tracker to monitor expiry dates. Note that if a tenant brings their own gas appliance, you are not responsible for checking it, but you remain responsible for the pipework and flues that serve it.
Take Action
Make sure your gas safety compliance is up to date before the Renters' Rights Act comes into force. Generate your complete compliance document pack to get all 14 essential landlord documents in one go.
You can also use our free RRA Compliance Checker to see where you stand, or read the Landlord Compliance Checklist for 2026 for a full breakdown of every requirement.