Annual gas safety certificates for London landlords
Every rented property with gas needs a landlord gas safety certificate (CP12) once a year. We inspect across all of London, arrange access with your tenant, and email you the certificate.
From £110 + VAT (£132 inc VAT), per applianceFurther work quoted first
Gas Safe registered · 4.9 average from 229 reviews · £10m insured · 12 month guarantee
The legal position
Under the Gas Safety (Installation and Use) Regulations 1998, every gas appliance and flue in a rented property must be checked once a year by a Gas Safe registered engineer. The record is the CP12. Tenants get a copy within 28 days, new tenants before they move in, and the record is kept on file.
Neos Engineering issues CP12s acrossall of London from our base in Camden. Engineers are Gas Safe registered and City & Guilds qualified, and the certificate is emailed to you, and to your agent if you use one.
Guides:landlord gas safety certificate rules andwho holds the duty when an agent manages the let.
Access: we deal with the tenant
The hard part of a CP12 is access, not the inspection. Give the office the tenant's details and we agree the visit with them directly; reviewers regularly mention it. After the visit the certificate is emailed to you.
One visit, two documents
The CP12 confirms the appliances are safe. It does not keep the boiler alive; an annualboiler service does. We can do both in one visit: one appointment for your tenant, one engineer, both documents emailed together.
Booked together, the gas safety certificate and a standard boiler service are from £200 + VAT (£240 inc VAT), service and certificate for one boiler at a home, andfrom £200 + VAT, service and certificate for one boiler for a business. At a home that is £30 + VAT (£36 inc VAT) less than the two booked separately, £230 + VAT (£276 inc VAT).Each extra gas appliance on the certificate is £110 + VAT (£132 inc VAT).
Single lets to portfolios
One flat gets the same process as a full list: the office schedules each address, engineers handle tenant access, and every certificate is emailed as it is issued. How we work withproperty management companies,landlords andletting agents is on their own pages, with remedial work quoted first and a 12 month guarantee on it.
The record is public: 4.9 average from 229 reviews, linked fromthe reviews page.
What a CP12 costs
From £110 + VAT (£132 inc VAT) for a certificate for one appliance. The price is per gas appliance on the certificate, so a boiler and a gas fire are two. Materials, parking and the congestion charge are added where they apply, and further work beyond the package is quoted first. For a portfolio, send the whole list.
Common questions:whether landlords need a gas safety certificate,what a landlord gas safety certificate costs,when tenants must get a copy andrenewing early without losing the renewal date.
The record behind the work
A real job, and the review it earned
Filter fitted around a tenant, not through the landlord
A new water filter for a rented apartment, where the difficulty was access rather than the plumbing. The office arranged the appointment around the tenants, and the engineer stayed in touch with the owner by phone on the day to sort entry to the flat.
Reviews you can check
Rated 4.95 out of 5 on TrustATrader, and 9.95 out of 10 on Checkatrade from reviews left for CJ Plumbing & Heating, one of the two businesses that merged to form Neos. Every review is on a platform we cannot edit, and the links go straight to the originals.
Stars are drawn from each platform’s real score and never rounded up. The average is weighted by how many reviews each platform holds, and uses the lower of the two TrustATrader scores.
Landlord gas safety certificates by area
Get a CP12 booked
Give the office the address and the tenant's details. Portfolio landlords can send the whole list.
Landlord questions
Is a landlord gas safety certificate a legal requirement?
Yes. The Gas Safety Regulations 1998 require an annual check of every gas appliance and flue in a rented property by a Gas Safe registered engineer. The record is the CP12.
Can you arrange access with the tenant directly?
Yes, that is the normal arrangement. Give the office the tenant’s contact details and we agree the visit with them. You are only pulled in if the tenant cannot be reached.
What does the engineer check during a CP12 inspection?
Every gas appliance and flue: gas tightness, operating pressure, safe operation, flue flow and termination, ventilation and safety devices. It is a safety inspection, not a service.
When should I book the renewal?
Any time in the two months before the current certificate expires. Renewing in that window keeps the original expiry date, like an MOT, so booking early costs you nothing.
What happens if an appliance fails the check?
The defect is recorded on the certificate and explained in plain terms. A dangerous appliance is not left in use. Remedial work is further work beyond the check, and it is quoted first.