Derry · Northern Ireland
Gas Safety Certificate (CP12) in Derry
One short form, and your Gas Safety Certificate (CP12) in Derry is in hand — correctly registered professionals, honest pricing guidance, and your certificate stored with its renewal date.
Straight answer
Landlords in Derry must have every gas appliance, flue and the associated pipework checked once a year by a Gas Safe registered engineer. The check produces the Landlord Gas Safety Record — the CP12 — which remains valid for 12 months.
Booking
Booking in three steps
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Credentials
Who you're letting in
Gas work is one of the few trades where the register isn't optional: an engineer who isn't Gas Safe registered can't legally sign your record, full stop. We check registration and insurance before confirming any booking, and you can verify any engineer yourself on the public Gas Safe Register — ask to see the ID card, and check the back for the work categories it covers.
Renting out in Derry
Letting in Derry: the practical points
The gas rules themselves are national, so nothing about the check is different in Derry — what's local is the housing enforcement around it. Derry City and Strabane District Council is the housing authority for the area, and if your property needs an HMO licence, the current gas record is the kind of document its conditions will expect you to hold and produce on request.
Pricing
What a CP12 costs
What moves the price is mostly appliance count: a flat with a single combi boiler sits at the bottom of the range, while a house with a boiler, hob and gas fire takes longer and costs more. Adding a boiler service to the same visit is usually cheaper than a separate appointment. The figures above are national guidance — your confirmed price comes before anything is booked.
The inspection
What the engineer actually checks
A CP12 visit is systematic rather than long: a tightness test on the supply, then every landlord-owned gas appliance tested in turn. The engineer checks that each burns correctly, that safety cut-offs work, that the room has the ventilation the appliance needs, and that flues carry fumes clear of the property. Results, defects and any action taken go on the record, alongside the engineer's Gas Safe registration number — the detail worth verifying.
The law
What the law asks of landlords in Derry
The Gas Safety (Installation and Use) Regulations 1998 make the annual check a hard legal duty wherever in the UK you let, Derry included. The HSE prosecutes failures — penalties are unlimited fines and potentially imprisonment — and in England an expired record blocks a valid Section 21 notice. If the property is a licensed HMO, expect Derry City and Strabane District Council to require the current record as a licence condition too.
Landlords must have every gas appliance and flue they provide checked by a Gas Safe registered engineer at least every 12 months, keep the record for two years, give tenants a copy within 28 days of the check, and give new tenants a copy before they move in.
Equivalent annual duty applies in Northern Ireland; engineers must be Gas Safe registered.
Penalties stated are statutory maximums or court-set; Derry City and Strabane District Council is the local housing authority for Derry.
FAQ
Gas Safety Certificate (CP12) questions, answered
Who can carry out a gas safety check in Derry?
Only an engineer on the Gas Safe Register may legally carry out landlord gas safety checks anywhere in the UK, including Derry. Always ask to see the engineer's Gas Safe ID card — you can verify it on the official register.
Are the gas rules different for an HMO in Derry?
The annual check itself is the same, but HMO licensing (administered by Derry City and Strabane District Council) usually requires you to provide the current gas safety record with your licence application and on request. Check your licence conditions for any extra record-keeping duties.
Do tenants' own gas appliances need to be on my record?
Appliances owned by the tenant are not the landlord's responsibility to check, but the pipework serving them is, and any flue serving a tenant appliance that you own must be included. Note the division of responsibility in your tenancy agreement.
How long does a gas safety check take?
Typically around 30 to 60 minutes for a property with a boiler and one or two additional gas appliances. More appliances, or access issues, extend the visit.
What happens if I let a property in Derry without a valid gas safety record?
It is a criminal offence under the Gas Safety (Installation and Use) Regulations 1998. Cases are prosecuted by the HSE and can lead to unlimited fines and, in serious cases, imprisonment. A missing record can also block a valid Section 21 notice in England.
Nearby
Nearby coverage: Coleraine · all of Northern Ireland (Regions)
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