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Gas appliances are super convenient—until they’re not. If you’ve got a boiler, cooker, or gas fire, a gas safety check isn’t just a nice idea—it’s essential. In this guide, we’re breaking down exactly what happens during a gas inspection in London, who needs it, how to prepare, and what to expect afterward. Let’s make sure your home is safe and sound.
Let’s be real—gas leaks and carbon monoxide poisoning are no joke. A regular inspection ensures your appliances are working efficiently and, more importantly, safely. It could literally save lives.
If you’re a landlord, listen up: the law requires you to get a gas safety check every 12 months. This applies to all gas appliances, fittings, and flues in your property. Homeowners? It’s not mandatory, but highly recommended.
• Landlords (it’s legally required)
• Homeowners (for peace of mind)
• Tenants (you have a right to a safe living space)
During a gas safety inspection, a qualified engineer will check:
• That appliances are working correctly
• Gas is burning properly
• There are no leaks or blockages
• Proper ventilation is in place
• Flues and chimneys are safely removing fumes
A gas safety check is a general safety overview, while a service involves in-depth cleaning and maintenance. Think of the check as a health screening and the service as a full-body tune-up.
• Myth: “It’s only needed if something’s broken.”
Truth: Problems can exist without symptoms—better safe than sorry.
• Myth: “It’s a waste of money.”
Truth: It’s cheaper than emergency repairs—or worse.
Always book through the Gas Safe Register—it’s your go-to database for certified pros. In London, there are tons of engineers, but only those listed here are legally allowed to perform inspections.
Make sure:
• All appliances are accessible
• You’re available to let the engineer in
• Pets are secured (engineers love dogs, but safety first!)
• Inspect all appliances and pipework
• Check gas pressure and air supply
• Perform visual checks for wear or damage
• Test for carbon monoxide
From boilers to cookers, all gas-burning appliances are thoroughly checked to make sure they’re operating safely and efficiently.
A blocked flue or poor ventilation = danger. Your engineer will ensure air flows properly and fumes are expelled safely.
Leaks? Not on their watch. The engineer will test pressure levels and check for signs of corrosion or weak joints in the pipework.
This invisible killer is part of every inspection. Engineers check detectors, warning signs, and potential leak sources.
After a successful check, you’ll get a CP12 certificate. Landlords must give this to tenants within 28 days. Keep it handy for your records.
Don’t panic. The engineer will explain the issues and may be able to fix them on the spot. If not, you’ll need a follow-up once repairs are complete.
• Landlords: Every 12 months (by law)
• Homeowners: Annually recommended
• Before buying/selling a property: always
You’re responsible for:
• Booking certified inspections
• Keeping copies for 2 years
• Providing certificates to tenants
You can (and should) ask to see the CP12. It’s your right to live in a gas-safe environment.
Gas safety doesn’t stop after the inspection. Regular maintenance, carbon monoxide detectors, and early reporting of problems all help.
Head to GasSafeRegister.co.uk and type in your postcode. Easy.
• Are you Gas Safe registered?
• What’s included in the inspection?
• Can you provide the CP12 certificate?
Expect to pay between £60–£100, depending on the number of appliances. Some engineers offer discounts for multiple properties.
A gas safety check isn’t just another task on your to-do list—it’s a lifesaver. Whether you’re a landlord, tenant, or homeowner in London, understanding the inspection process helps you stay safe and legal. Don’t wait until there’s a problem. Book your gas inspection in London today and breathe easy knowing your home is safe.
