Choosing and planning
Gas Safety Certificate Cost and the Rules for Landlords
A gas safety certificate, also called a CP12 and officially a Gas Safety Record, is the record of a gas safety check that only a Gas Safe registered engineer can issue. Landlords need one every year, and homeowners are not legally required to have one. Here is what the certificate costs, what each extra appliance adds, and the duties HSE sets for landlords, from the yearly check to the tenants' copies.
Gas safety certificate cost in the UK
Checkatrade’s gas safety certificate cost guide, in a table last updated in June 2026, puts a gas safety certificate at £60 to £90 in the UK, with an average of £80, excluding VAT. That fixed price is for a property with one boiler and one other gas appliance, such as a hob or a fire.
Each additional appliance costs around £10 to £15 in the same guide, and prices can be slightly higher in London and the South East.
Take a rented home where the landlord provides a gas boiler, a gas hob and a gas fire. The fixed price covers the boiler and the hob, and the fire is one additional appliance.
A rented home with a boiler, a hob and a gas fire
| Gas safety certificate, boiler and hob | £60 to £90 |
|---|---|
| Additional appliance, gas fire | £10 to £15 |
Total £70 to £105
The certificate price excludes VAT on Checkatrade's figures. Every gas appliance past the boiler and one other adds around £10 to £15 to the bill.
With the certificate at its £80 average on Checkatrade’s figures, the same home comes to around £90 to £95.
CP12 and Gas Safety Record
A gas safety certificate is also called a CP12, and its official name is a Gas Safety Record. Checkatrade says only a Gas Safe registered engineer can issue one, and the check takes around 30 to 60 minutes for a boiler and one or two other appliances.
The check is a different job from a yearly boiler service, which Checkatrade says may be required to keep a manufacturer’s warranty valid. The safety check is the one that produces the record the law asks a landlord to keep.
Landlord gas safety certificate rules
HSE’s guidance for landlords sets the duties below, and under the Gas Safety (Installation and Use) Regulations you must only use a Gas Safe registered engineer for maintenance and safety checks on the gas equipment you provide as a landlord.
| Landlord duty | When | Who |
|---|---|---|
| Gas safety check on the gas appliances and flues you provide | Within 12 months of installing a new appliance or flue, then every year | A Gas Safe registered engineer |
| Keep the record of the check | For 2 years | You |
| Give a copy of the record | Within 28 days of the check | Each existing tenant |
| Give a copy of the record | Before they move in | Each new tenant |
A breach of these duties can lead to a substantial fine, a custodial sentence, or both, HSE says.
Do not let a new tenant move in before they have the gas safety record
A new tenant's copy is due before they move in, not within the 28 days an existing tenant gets, and a breach of the landlord gas safety duties can lead to a substantial fine, a custodial sentence, or both.
If a tenant owns a gas appliance, HSE says you are responsible for parts of the installation and pipework, but not for the appliance itself.
Since the 2018 amendment regulations, HSE says, you can have the check done up to 2 months before it is due and keep the original deadline date. A check due by 30 November and done in October leaves the next one due by 30 November the following year.
A landlord's yearly gas safety check
- The check is booked no more than 2 months before the deadline
- Every gas appliance and flue you provide is on the booking
- The engineer's licence number is on the Gas Safe Register
- The back of the engineer's ID card lists the work being done
- Each existing tenant has a copy within 28 days of the check
- A new tenant has a copy before moving in
- The record is filed and kept for 2 years
Booking a Gas Safe registered engineer
HSE says anyone employed to work on gas appliances in a home must be a Gas Safe registered engineer and competent in that area of gas work, and the areas each engineer covers are marked on the back of their Gas Safe Register ID card.
Check the licence number on that card before the engineer starts, as you would when hiring a plumber for any gas job. HSE gives three ways to do it: search Find an Engineer on the Gas Safe Register website by postcode or licence number; call the freephone helpline on 0800 408 5500; or text Gas and the seven-digit licence number to 85080.
Nine of the ten Nottingham plumbing and heating firms compared side by side state Gas Safe registration, and Nottingham Gas & Plumbing in Forest Fields lists gas safety certificates among its services, alongside boiler installation, servicing and repairs.
Ask for a price with every gas appliance named and VAT shown, because the fixed price covers a boiler and one other appliance, and each appliance after that adds to the bill.
Asking for a landlord gas safety certificate price
Do this
What is your price, with VAT, for a landlord gas safety certificate on a rented house with a gas boiler, a gas hob and a gas fire?
Not this
How much is a CP12?
Gas safety certificates for homeowners and sellers
Homeowners are not legally required to have a gas safety certificate, and none is needed to sell a home, Checkatrade’s guide says.
HSE strongly recommends carbon monoxide alarms, which cost from £15 and should comply with EN 50291 and carry a British or European approval mark, such as a Kitemark.
Common questions
How much does a gas safety certificate cost?
A gas safety certificate costs £60 to £90 in the UK, with an average of £80, excluding VAT, in Checkatrade's gas safety certificate cost guide. That fixed price is for a property with one boiler and one other gas appliance, each additional appliance costs around £10 to £15, and prices can be slightly higher in London and the South East.
Is a CP12 the same as a gas safety certificate?
Yes, a CP12 is the same thing as a gas safety certificate, and its official name is a Gas Safety Record. Only a Gas Safe registered engineer can issue one.
How often does a landlord need a gas safety check?
A landlord needs a gas safety check on the gas appliances and flues they provide within 12 months of installing a new appliance or flue and every year after that, HSE says. A Gas Safe registered engineer must do the check, and it can be done up to 2 months before it is due while keeping the original deadline date.
How long does a gas safety check take?
A gas safety check takes around 30 to 60 minutes for a boiler and one or two other appliances, on Checkatrade's figures. Only a Gas Safe registered engineer can issue the certificate.
Do homeowners need a gas safety certificate?
No, homeowners are not legally required to have a gas safety certificate, and none is needed to sell a home, Checkatrade's guide says. The yearly gas safety check is a legal duty for landlords, on the gas appliances and flues they provide.
How long must a landlord keep a gas safety record?
A landlord must keep the record of each gas safety check for 2 years, HSE says. A copy goes to each existing tenant within 28 days of the check, and to each new tenant before they move in.
What happens if a landlord does not get a gas safety check?
A landlord who skips the yearly check is in breach of the gas safety duties, and HSE says a breach can lead to a substantial fine, a custodial sentence, or both. The same applies to the other duties, such as keeping the record for 2 years and giving tenants their copies on time.
Where the figures come from
- Checkatrade, gas safety certificate cost guide read 2026-09-16
- HSE, gas safety for landlords and letting agents read 2026-09-16
- HSE, gas safety for home owners read 2026-09-16
- HSE, check an engineer is on the Gas Safe Register read 2026-09-16
- Checkatrade, boiler service cost guide read 2026-09-16
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