Landlord gas safety certificate cost: what you'll pay in 2026
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A landlord gas safety certificate cost is typically £60 to £90 in the UK, with an average of around £80, according to Checkatrade's October 2026 cost guide [1]. That usually covers a boiler and one other gas appliance; extra appliances are often around £10 to £15 each, and prices are usually higher in London and the South East [1]. You need a new certificate every 12 months, from a Gas Safe registered engineer, and tenants must get a copy within 28 days of the check [2][3].
Landlord gas safety certificate cost: the typical UK range
| Item | Typical cost |
|---|---|
| Gas safety certificate (CP12) | £60 to £90 [1] |
| Average UK cost | Around £80 [1] |
| Each additional gas appliance | Around £10 to £15 [1] |
| Typical visit length | 30 to 60 minutes [1] |
Source: Checkatrade, "Gas safety certificate: Cost breakdown 2026", updated October 2026. These are ballpark averages; get a quote from a local engineer [1].
Gas Safe engineers set their own prices, so the figures above are a guide, not a fixed fee.
What affects the cost of a CP12?
According to Checkatrade, the main factors are [1]:
- Number of appliances. The biggest single factor. Boiler, hob, cooker and gas fire each take time to check.
- Location. Prices are generally higher in London and the South East.
- Bundling. Many landlords book the annual boiler service at the same visit, which is usually cheaper than two separate call-outs.
You're responsible for the gas pipework even where a tenant owns an appliance, and many landlords ask for all appliances to be checked at the same visit [1].
Gas safety and boiler service: are they the same?
No. A gas safety check records whether appliances, flues and pipework are safe. A boiler service maintains the boiler so it runs safely and efficiently [1]. HSE's guidance requires landlords to carry out an annual safety check and to maintain gas appliances, pipework and flues they provide [3]. Many engineers offer both at one visit, which saves you a call-out.
What landlords must do (the legal bit)
Under the Gas Safety (Installation and Use) Regulations 1998, as summarised by HSE, landlords must [3]:
- have gas appliances and flues they provide checked every 12 months by a Gas Safe registered engineer
- give existing tenants a copy of the record within 28 days of the check
- give new tenants a copy before they move in
- keep records of checks
HSE also lets you have the check done up to two months before the deadline and keep the original expiry date, so you don't lose months by booking early [3]. Our existing guide covers the rules in detail: gas safety certificate for landlords, and how often a landlord needs a gas safety check.
If your property is a licensed HMO, you must also send the council an updated gas safety certificate every year [4].
How to keep the cost down without cutting corners
- Compare quotes from two or three Gas Safe registered engineers. Check their Gas Safe ID.
- Count your appliances before you ring, so the quote is accurate.
- Combine with the boiler service where it makes sense.
- Book several properties together if you have them in one area; some engineers price multiple jobs better.
- Book early, not late. Booking in the two-month window keeps your renewal date [3] and avoids paying for a rush job.
- Never skip it. HSE can prosecute landlords who fail to meet gas safety duties [3].
The hidden cost: missing the renewal
The certificate itself is cheap. Missing the renewal isn't. An expired certificate means an unsafe position for your tenants and a compliance breach for you, and on a licensed HMO it's a licence breach too [4]. The fix is a reminder that doesn't depend on your memory.
Gaffy's document vault lets you tag a CP12 with its expiry date, and Gaffy flags it as it gets close to expiring. See gas safety certificate reminders, or work out your next due date with our free gas safety expiry calculator.
What happens during the check
Checkatrade describes what a Gas Safe engineer will typically do on a gas safety visit [1]:
- inspect the gas appliances included in the check
- check visible gas pipework
- inspect flues and ventilation
- test how each appliance runs and its safety controls
- identify faults or safety concerns
- issue the gas safety record (CP12) with the findings
If something fails, the engineer will explain what needs fixing before the installation can be considered safe [1]. Repairs are priced separately from the certificate, so budget for them, especially with an older boiler.
How to prepare for the visit
A smooth visit is a cheaper visit. Before the engineer arrives:
- Tell your tenant the date and time in writing, giving at least 24 hours' notice [2].
- Make sure the engineer can reach the boiler, the gas meter and every gas appliance [1].
- List the appliances so the quote matches the job.
- Find the previous certificate, so the engineer can see past issues.
- Ask the engineer to send the record by email, so you can forward a copy to the tenant straight away and meet the 28-day rule [3].
When the tenant won't give access
HSE expects landlords to take all reasonable steps to carry out the check [3]. If a tenant repeatedly refuses access, keep a written record of every attempt, every letter and every message. That record shows you did what you could. A timestamped trail is far more convincing than "I rang a few times".
Gas safety certificate cost for HMOs
Larger HMOs often have more appliances, so expect the per-appliance charges to add up [1]. If the HMO is licensed, the annual certificate must also go to the council [4], so diary that as part of the job, not an afterthought.
FAQs
How much does a landlord gas safety certificate cost?
Typically £60 to £90, averaging around £80, according to Checkatrade's October 2026 guide [1].
How much does a gas safety certificate cost in London?
Prices are generally higher in London and the South East [1]. Get local quotes.
How long does a gas safety certificate last?
12 months. Landlords must renew it every year [3].
Can I do my own gas safety certificate?
No. Only a Gas Safe registered engineer can carry out the check and issue the record [1][3].
Is a gas safety check the same as a boiler service?
No, but many engineers do both at one visit [1].
Who pays for the gas safety certificate, landlord or tenant?
The landlord is responsible for arranging the annual check [3].
How does Gaffy help?
Gaffy flags your gas safety certificate before it expires, alongside your EICR and EPC, and gives tenants a repair link that needs no app. It's £12 a month for up to 5 properties, plus £4 a month for each extra property, and the first month is free.
Sources
- Checkatrade, Gas safety certificate: Cost breakdown 2026: https://www.checkatrade.com/blog/cost-guides/gas-safety-certificate-cost/
- GOV.UK, Renting out a property, Making repairs: https://www.gov.uk/renting-out-a-property/making-repairs
- HSE, Gas safety: landlords and letting agents: https://www.hse.gov.uk/gas/landlords/index.htm
- GOV.UK, House in multiple occupation licence: https://www.gov.uk/house-in-multiple-occupation-licence