Who needs the gas safety certificate in NI, the landlord or the tenant?

The legal duty sits entirely with the landlord. Every gas appliance and flue the landlord provides in a rented home must be checked annually by a Gas Safe registered engineer, and the resulting record, universally called a CP12, must be shared with the tenant. The tenant’s only job is access: letting the engineer in when the check is due. A tenant should never be asked to arrange or pay for it.

For tenants, the practical points are three. You are entitled to see the current record, ask if you have not been given it. Check the engineer’s Gas Safe ID when they arrive, the register is public and takes two minutes. And if your landlord will not produce a current certificate, that is a housing standards issue worth raising formally, because an unchecked gas appliance is a carbon monoxide risk you are living with.

For landlords, the market rates are modest: our researched NI 2026 benchmarks put a standalone CP12 at £60 to £95, or £110 to £170 combined with the annual boiler service in the same visit, with multi-property discounts common. Booking the service and certificate together is the efficient pattern.

Owner-occupiers are not legally required to have an annual check, but the same £60-to-£170 visit is cheap insurance on any home with gas, and an annual boiler service usually keeps the manufacturer’s warranty valid. Oil-heated homes have a parallel: the OFTEC annual service, strongly advised though not statutory for lettings.