Guide to Landlord Gas Safety Certificate CP12

There are many requirements when it comes to the safety of your tenants and none more important than regular Gas Safety. We created this guide to help you understand what Gas Safety Certificate CP12 is, why it is important and who needs it. We are Gas Safe Registered engineers and are qualified to carry out checks as well as offer all plumbing services. Please scroll down to find our offer.

What is a Gas Safety Certificate?

It is a document which affirms that an inspection of all gas appliances has been carried out by a Gas Safe Registered Engineer. The inspection ensures all gas appliances and flues in the landlord’s rented property are operating safely and up to current standards.

Who Requires Gas Safety Record?

The owners of residential rented properties are legally required to have annual safety checks.
Letting Agents who manage a tenanted property.

Why do landlords need Gas Safety Record?

To ensure that all gas appliances are operating safely and up to the current standards. It is a legal requirement for landlords to hold an annual Gas Safety Record (CP12) for homes supplied with gas.

What are the types of Gas Safety Records?

Domestic: Landlord or Homeowner Gas Safety Record (CP12)
Non-domestic: Gas Installation Safety Report (CP17)
Commercial catering appliances: Gas Safety Inspection (CP42) 

Do homeowners need Gas Safety Record?

There is no legal requirement for homeowners to hold valid Gas Safety Record. However, it is needed for most boiler manufacturer warranties and often for home insurance policies.

Each boiler manufacturer has their own warranty conditions. An annual Gas Safety Record may not be enough to satisfy these condition. Green London Plumbers services boilers in accordance with manufacturer guidelines and offer combined package for GSR and Boiler Service visit. Call us to find out more.

Where can I find more information about Gas Safety? Health and Safety Executive has a vast library of information on health and safety in general and Gas Safety in particular. Only Gas Safe Registered gas engineers can issue Gas Safe Certificate. If you looking to check if your plumber is on the register then click here.  

Our 9 Point Gas Safety Inspection includes


Check appliances and all pipe work for gas tightness

Check standing and working pressure (if test points are available)

Check burner pressure/gas rate against manufacture’s data plate

Check for satisfactory provision of all necessary ventilation

Test flue flow to ensure removal of products of combustion

Check satisfactory operation of all the flame failure devices

Check for any misuse of gas devices

Check that safety devices work properly

Check physical stability, presence and effectiveness of stability brackets (where appropriate)

Produce a written report (CP12) for Landlord and Tenant

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Why Choose Us?

We understand that people rely on trained professionals to carry out some of the essential household services. In an industry with so many stories of shoddy workmanship we strive to be different. Our services also come with a 12 month guarantee!  We are:

✔️ Courteous and Polite
✔️ Treat Your Home Like Our Own
✔️ Honest
✔️ Qualified and Competent
✔️ Passionate and Care About What We Do
✔️ Clear Pricing Without Hidden Extras

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Contact Info

Our Address

90 Stanford Road, 
SW16 4QA
(not open to the public)


Opening Hours

Mon-Fri: 8am - 8pm
Saturday: 8am - 5pm
Sunday: Closed


Get in Touch

020 8004 4577

Areas We Service


Wandsworth Common


Brixton Hill
Gipsy Hill
Knight’s Hill
St. Leonards
Streatham Hill
Streatham South
Streatham Wells


Bensham Manor
Broad Green
South Norwood
Thornton Heath
Upper Norwood
West Thornton


Colliers Wood
Cricket Green
Figge’s Marsh
Lavender Fields
Pollards Hill