HomeServicesLandlord Gas Safety Certificates (CP12)

Landlord Gas Safety Certificates (CP12) in Greater London

Reliable landlord gas safety certificates (cp12) from Thameside Plumber, 15+ years' experience and every job backed by our 1-year written guarantee.

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Sarah H.
Google · Westminster
★★★★★

“Booked them for plumbing work and couldn't fault it, turned up on time, tidy, and sorted everything properly. Highly recommend.”

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David M.
Google · Camden
★★★★★

“Really high standard of work and priced fairly. You can tell they've been doing this for years. Genuinely great to deal with.”

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Rebecca T.
Google · Islington
★★★★★

“Honest, tidy and reliable. Talked me through the options with no pressure, and the written guarantee gave real peace of mind.”

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James P.
Google · Kensington
★★★★★

“Two other firms couldn't sort our problem, this lot found it and fixed it properly in no time. First class.”

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Louise K.
Google · Chelsea
★★★★★

“Spotless job, tidied everything and turned up exactly when they said. Would use again in a heartbeat.”

Landlord Gas Safety Certificates (CP12)

Expert Landlord Gas Safety Certificates (CP12) You Can Rely On

Whether it's a small job or a big one, our landlord gas safety certificates (cp12) is done properly the first time. With more than 15 years of hands-on experience across Greater London, we know exactly what a lasting result takes, and we price it honestly with no surprises.

Every landlord gas safety certificates (cp12) job is done to a lasting standard, so you have real peace of mind long after we've packed up.

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Why Choose Us

Why Homeowners Call Us First

1-Year GuaranteeEvery job backed in writing for 1 years, not just a promise.
15+ Years' ExperienceDecades of hands-on plumbing across Greater London.
Fast ResponseWe come straight back to you, no waiting around.
Local & TrustedA Greater London business you can actually reach, not a call centre.
How It Works

From First Call To Finished Job

No mystery, no runaround. Here's exactly what happens when you get in touch.

01Call Any TimeGet in touch and speak to a real person. Emergencies go to the front of the queue.
02Free AssessmentWe assess the job properly and honestly, so you see exactly what's needed, no guesswork, no scare tactics.
03Honest QuoteA clear, fixed price with no obligation. If a smaller fix will do, we'll tell you, we don't oversell.
04Guaranteed WorkThe job's done properly, the site's left tidy, and you get our 1-year guarantee in writing.
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Good To Know

Frequently Asked Questions

It's the official record confirming that the gas appliances, fittings and flues in a rental property have been checked and are safe, and landlords are legally required to have it renewed every 12 months.

A typical CP12 check on a flat or house takes under an hour, covering boilers, gas cookers and any other gas appliances along with the associated pipework and ventilation.

Make sure the engineer can access the boiler, any gas appliances, and the meter, and that the property is unlocked or someone is present at the agreed time. We'll let you know beforehand if anything specific is needed.

Yes, we regularly work with landlords, letting agents and property management companies who need certificates across several properties, and we can arrange evening or weekend visits where tenants are only free outside working hours.

We provide a digital invoice and certificate, so you have clear, easy-to-store paperwork for your records without any delay.

We'll explain clearly what's failed and why, and give you an honest fixed quote to put it right, rather than just condemning it without explanation.

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Tell us what you need and we'll come back with an honest, no-obligation price. Prefer to talk? Call 020 3123 4567.

  • Tidy, professional work you can rely on
  • 15+ years of experience across Greater London
  • Fast, friendly local service

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