GAS · UPDATED 2026-04-01
Gas Safety Certificate Cost London 2026 (CP12)
£75 – £120 per certificate
A gas safety certificate (CP12) in London costs £75–£120 for a standard property. LPG Gas Safe registered engineers carry out annual landlord gas safety checks across all London boroughs.
Gas Safety Certificate price breakdown — London 2026
| Job | Price range | Unit |
|---|---|---|
| CP12 · 1 appliance (boiler only) | £75 – £90 | per certificate |
| CP12 · 2 appliances (boiler + hob) | £90 – £110 | per certificate |
| CP12 · 3+ appliances | £100 – £130 | per certificate |
| HMO gas safety inspection | £120 – £200 | per property |
What affects the price
- Number of appliances. Each additional appliance (e.g. gas hob, gas fire) adds £15–£25 to the inspection cost.
- Property type. HMOs with multiple appliances cost more than single-occupancy dwellings.
- Remedial work required. If faults are found, remedial work is charged separately. The certificate itself is a flat fee.
Frequently asked questions
Is a gas safety certificate a legal requirement for landlords?
Yes · UK law requires landlords to have a gas safety check completed annually by a Gas Safe registered engineer and to provide a copy to tenants within 28 days.
How long does a gas safety inspection take?
A standard gas safety inspection takes 30–60 minutes depending on the number of appliances.
Related cost guides
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