Gas Safety Certificate Kensington & Chelsea — from £64.99

What is a Gas Safety Certificate (CP12)?

A Gas Safety Certificate, formally known as a CP12, is a document confirming that all gas appliances, flues and pipework in a rental property have been inspected by a Gas Safe Registered engineer and found to be safe. The engineer checks each appliance for correct operation, adequate ventilation, secure flue connections and correct gas pressure, and lists every appliance on the certificate along with its result.

Every private landlord in England has been legally required to hold a valid CP12 and renew it every 12 months since the Gas Safety (Installation and Use) Regulations 1998 came into force. This national duty applies in Kensington & Chelsea as it does across England, and an HMO licence can add its own conditions on top.

Gas safety in Kensington & Chelsea — local property context

Kensington and Chelsea has the highest share of pre-1900 property in London: 62.6% of homes, against 20.9% across the capital (VOA 2025). Flats dominate: about 80% of households live in purpose-built or converted flats, while terraced houses account for 12.8% (Census 2021). Nearly three quarters of the borough sits within 38 conservation areas.

Private renting is the borough's largest tenure: 39.6% of households rent privately, more than the 31.7% who own, against a London private-rented share of 30.0% (Census 2021). Our Gas Safe registered engineers are experienced with the boilers, gas fires and appliances typically found in properties across the W11, W10, SW3, W8, SW10, SW5, SW7, W14, SW1X postcode areas, and regularly carry out CP12 inspections across Kensington & Chelsea for private landlords, letting agents and HMO operators.

Gas safety in Kensington and Chelsea: converted houses and licence condition 4

In a licensed HMO here, the gas safety certificate has three readers. Condition 4 requires one obtained within the last 12 months. A copy must go to each occupier when they move in, and an emailed copy to RBKC within 14 days of a request.

Flats in converted or shared houses are home to 23.5% of the borough's households, more than twice the London share of 11.1% (Census 2021). Where one converted house holds several let flats, check that each flat's certificate lists the appliances serving that flat.

Households renting privately

39.6% (London 30.0%)

Census 2021

Households in purpose-built flats

56.7% (London 40.3%)

Census 2021

Homes built before 1900

62.6%, the highest in London (London 20.9%)

VOA 2025

Conservation areas

38, covering nearly three quarters of the borough

RBKC

Gas Safety Certificate pricing in Kensington & Chelsea

Fixed pricing by number of gas appliances. The same prices apply in Kensington & Chelsea as across all other London boroughs — no London surcharge. The only location-based fee is the £20 Congestion Charge Zone addition for central London properties.

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What's included from £64.99

Every gas safety check we carry out in Kensington & Chelsea covers the complete inspection at no extra cost beyond the price shown.

• Inspection of every gas appliance — boiler, hob, cooker and gas fire
• Flue flow and spillage testing on every appliance with a flue
• Gas pressure and burner pressure checks
• Visual check of pipework, joints and fittings for leaks or damage
• Ventilation adequacy check for every gas appliance
• Gas Safe registered engineer — fully qualified and independently assessed
• Signed CP12 certificate emailed within 24 hours
• Immediate isolation of any appliance found to be unsafe

Other landlord certificates in Kensington & Chelsea

We also cover these landlord certificates in Kensington & Chelsea:

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Gas Safety Certificate in nearby boroughs

We cover all 33 London boroughs. See Gas Safety Certificate pricing and booking for areas near Kensington & Chelsea: