Landlord gas safety certificate (CP12)
Annual CP12 checks for flats, houses and HMOs, with the record ready to send to tenants and letting agents.
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Gas engineers for north and east London
Gas engineer in London for landlord certificates, boilers and gas safety
Landlord gas safety records, boiler repairs and new boilers across Islington, Hackney, Camden, Haringey, Tower Hamlets, Waltham Forest, Newham, Enfield, Barnet and Redbridge. Tell us what you need and we confirm the price after a look at the job.
Boiler quote
Tell us about the boiler
Tap through the questions. Your answers build up as you go, and the price is confirmed with you before any work starts.
Boiler quote check
Answer what you can. "Not sure" is fine on every question.
- 01Your boiler
- 02Your home
- 03Installation
- 04The fault
- 05The check
- 06Timing
- 07Your details
Step 1
Your boiler
What do you need?
Your boiler
What heats your water now?
Look in the airing cupboard: a hot water tank means a system or regular boiler.
Your boiler
What fuel does it use?
Your home
How many bedrooms?
Your home
Bathrooms and showers in use at the same time?
This is what decides between a combi and a boiler with a hot water cylinder.
Installation
Where is the boiler now?
Installation
Keep it in the same place?
The fault
What is it doing?
The check
Is this for a rented home?
Landlords need a gas safety check every year and must give tenants a copy of the record.
Timing
How soon do you need someone?
Your home
What is the postcode?
So the right engineer for your area picks it up.
Your details
Your fixed price is confirmed at a free survey
Your answers tell the engineer which boiler type and size suits your home. The price is fixed after they have seen the flue, gas pipe and hot water demand in person.
Gas work in London
Gas work for London flats, terraces and rented homes
For gas work in north or east London, call a Gas Safe registered engineer who is qualified for the appliance in question. London Gas Engineers covers landlord gas safety records, boiler repairs, servicing and new boilers from Islington to Ilford. If you smell gas, call the National Gas Emergency Service on 0800 111 999 first.
Most gas jobs in north and east London happen in homes that were never built for modern boilers. A Victorian terrace in Hackney might now hold three flats, three meters and three combi boilers. A Warner half house in Walthamstow has two flats behind two front doors in one small terrace. A tower block flat in Tower Hamlets may have its boiler flue running through a ceiling void.
We work with landlords, letting agents and homeowners. Landlords need a gas safety check every 12 months on each appliance and flue they provide, with a copy to tenants within 28 days. Homeowners have no legal duty, but an annual check and service keeps boilers, cookers and fires safe. Every job starts with the same thing: you see the engineer's Gas Safe ID card and can check it on the register.
- Gas Safe rules explained in plain English before any work starts
- Written landlord gas safety record left after every check
- Price agreed with you before any work starts
How a gas job runs, from first message to finished
Four steps from first message to the paperwork, the same for a landlord check as for a new boiler.
Smell gas? Call 0800 111 999 first
Leave the property and call the National Gas Emergency Service from outside. Their engineer makes the supply safe. Repairs come after that.
What to do about a gas smellAsk to see the Gas Safe ID card
Any gas engineer should show it. The back lists the work they are qualified for, such as boilers or cookers, and you can check it on the register.
How to check an engineer-
01
Tell us the job
Send the address, the appliances involved and what is wrong or due. For landlord checks, tell us how many gas appliances there are and how to get access to the property.
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02
We confirm the visit and the price
You get a clear price for a fixed job, or a price confirmed after a look at the job for repairs and installs. For flats, tell us about parking and building access so nothing holds the visit up.
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03
The engineer checks ID and does the work
The engineer shows their Gas Safe ID card so you can see the work categories they hold. They test, repair or install, and explain anything unsafe in plain words before they leave.
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04
Paperwork you can use
Landlords get the gas safety record to keep for at least two years. New boilers and gas fires are notified to the council within 30 days, so a Building Regulations Compliance Certificate follows.
Services
Gas work for London homes and landlords
Gas safety check for homeowners
A yearly check of your boiler, cooker, hob and gas fire, with a written report for your records.
BookBoiler repair
No heating, no hot water, fault codes, low pressure or kettling. We find the fault and price the repair before starting.
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New boiler installation
Combi, system or regular boiler, sized for your home, with the flue, controls and council notification handled.
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Boiler service
Yearly clean and safety test for combi, system and regular boilers, with a written service record.
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Gas cooker and hob installation
Fitting, swapping and disconnecting gas cookers, hobs and range cookers, tested for leaks and safe burning.
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Gas leak and smell of gas
Call 0800 111 999 first. Once the emergency engineer has made it safe, we trace the leak and repair it.
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Gas fire servicing and removal
Yearly service and spillage test for gas fires, or safe removal and capping of fires you no longer use.
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Gas pipework and meter moves
New gas runs for kitchens, extensions and boilers, and reconnection after the network moves your meter.
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Carbon monoxide alarms and checks
CO alarms fitted in the right rooms, plus checks on the appliances that set them off.
BookLocal know how
What makes gas work in north and east London different
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Hard water in every Thames zone
Thames Water's 2025 reports put average hardness between about 258 and 278 mg/l across north and east London zones, from Stamford Hill to Hackney South. That is hard water on Thames Water's own scale, so limescale builds up in combi boilers and hot water pipes faster than in soft water areas.
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A huge rented sector
The 2021 Census found 38.5% of Newham households and 38.2% of Tower Hamlets households rent privately, against 20.5% for England. That means a lot of landlord gas safety records, HMOs with shared boilers, and tenants who need a copy within 28 days.
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Houses split into flats
Converted Victorian houses in Islington, Stoke Newington and Crouch End often have meters in cellars, under stairs or in a bank in the basement. Tenants often do not know where their emergency control valve is until the day they need it.
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Flues in flats and loft conversions
Boiler flues hidden in ceiling voids need inspection hatches, and since 2013 an engineer who cannot inspect one will class the boiler as At Risk. Loft conversions can put a new dormer window too close to an existing flue terminal, which has to be checked before work is signed off.
Hackney, east LondonAreas
Areas we cover in north and east London
We cover the boroughs north of the river and east of the City: Islington, Hackney, Camden, Haringey, Tower Hamlets, Waltham Forest, Newham, Enfield, Barnet and Redbridge. Each area page explains the local housing, who supplies your water and how hard it is, and the gas jobs that come up most there.
Gas emergency
Smell gas? Do this now
The National Gas Emergency Service comes first. A gas engineer repairs the fault once the supply is safe.
- 01
Get everyone out of the room, and out of the building if the smell is strong.
- 02
Open doors and windows to let the gas out.
- 03
Do not turn light switches or anything electrical on or off, and do not light a flame or smoke.
- 04
Turn off the gas at the emergency control valve by the meter if it is safe to reach. If the meter is in a cellar or basement where the smell is, do not go in.
- 05
Call the National Gas Emergency Service on 0800 111 999 from outside. Their engineer makes the supply safe.
Call 0800 111 999 - 06
Once the emergency engineer has given the all clear, call a Gas Safe registered engineer to repair the faulty appliance or pipework.
Questions
Straight answers about gas work
Not sure if it needs a repair, a service or a new boiler? Answer the quote questions and get a straight reply.
Start a quoteHow do I check a gas engineer is registered?
Ask to see their Gas Safe ID card. The back of the card, or the lower part of the digital card, lists the types of gas work they are qualified for, such as domestic boilers or cookers. You can also check the engineer or business on the Gas Safe Register website.
How often does a landlord need a gas safety certificate?
Every 12 months for each gas appliance and flue the landlord provides. Since 2018 the check can be done up to two months early and keep the original deadline date, as long as the records show it. Tenants must get a copy within 28 days of the check.
How long does a gas safety certificate last?
The landlord gas safety record covers 12 months from the date of the check. Landlords must keep each record for at least two years, or until two further checks have been done if they use the two month early window.
What should I do if I smell gas?
Open doors and windows, do not use light switches or anything that could spark, and turn off the gas at the emergency control valve by the meter if it is safe. If the meter is in a cellar or basement where the smell is, do not go in. Get out and call 0800 111 999.
Can a gas engineer move my gas meter?
No. In north London the gas network is run by Cadent, which handles moving the meter and service pipe as a service alteration, and your gas supplier deals with the meter itself. A Gas Safe registered engineer then reconnects the pipework inside your home.
Do homeowners need a gas safety certificate?
There is no legal duty for homeowners to have one. Gas Safe Register still recommends a gas safety check every year, and manufacturers usually ask for an annual service to keep a boiler warranty valid.
Do I need a carbon monoxide alarm?
In England, rented homes must have a carbon monoxide alarm in any room used as living accommodation with a fixed combustion appliance, such as a boiler or gas fire, but not a gas cooker. Building Regulations also expect an alarm when a new or replacement fixed appliance is fitted, in any home.
How much is a boiler service or gas safety check in London?
It depends on how many appliances there are, the type of boiler and how easy the property is to reach. We give a clear price for fixed jobs before booking, and repairs are priced after a look at the job.
Advice
Gas advice for London homes
Book a gas engineer in north or east London
Tell us the address and the job, and we will confirm the visit and the price.
- Areas
- North and east London, from Islington and Camden to Stratford and Ilford
- Smell gas
- Call the National Gas Emergency Service on 0800 111 999 first
- Prices
- Confirmed with you before any work starts