Your annual landlord gas safety certificate (CP12) is a legal duty, not a paperwork formality — call 020 7183 4810 and we’ll book a Gas Safe registered inspection across Kensington, with your digital certificate issued the same day.
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As a landlord you’re legally required to have every gas appliance, fitting and flue in a rental property checked every 12 months by a Gas Safe registered engineer. Here’s what that involves and why it matters.
Why this can’t be a quick DIY check or a handyman visit
- It’s a legal requirement under Regulation 36. Only an engineer on the official Gas Safe Register may carry out and sign off a landlord gas safety inspection — nobody else’s sign-off is valid.
- Without a valid CP12 you may not be able to serve a Section 21 notice. Under the Deregulation Act 2015, an out-of-date or missing certificate can block your ability to regain possession of the property.
- Your landlord insurance usually requires it. An uncertified gas incident can mean a declined claim, even if the appliance itself wasn’t at fault.
- It catches problems before they become emergencies. Minor corrosion, a weeping seal or a partially blocked flue found early avoids a mid-tenancy breakdown or worse.
- It protects your tenants, which is the point of the law in the first place. Carbon monoxide is odourless, and a proper inspection is the only reliable way to catch a developing fault.
Why we don’t recommend cutting corners on this
| The shortcut | What actually goes wrong |
|---|---|
| “Get a handyman to have a quick look” | Only a Gas Safe registered engineer can legally inspect gas appliances or issue a CP12 — anything else isn’t a valid certificate and won’t protect you legally. |
| “Let it run a bit late, it’s only a formality” | A lapsed certificate can block a Section 21 notice and can affect your insurance position if anything happens in the meantime. |
| “Skip testing the alarms while we’re there” | Carbon monoxide alarm compliance is checked alongside the gas inspection precisely because the two risks are linked — skipping one weakens the other. |
| “Just renew the paperwork without a proper visit” | A CP12 has to reflect an actual inspection of each appliance, flue and the pipework — a certificate without the visit isn’t worth the paper it’s on if something goes wrong. |
Before your engineer arrives
- Make sure the gas meter cupboard is accessible and unobstructed
- If the property has a prepayment meter, ensure there’s enough credit to test appliances under load
- Clear access around the boiler, hob and any gas room heaters
- Give tenants at least 24 hours’ notice of the appointment
What it costs to let this slip
A missed or expired CP12 isn’t just a compliance gap on paper — it can leave you unable to serve a Section 21 notice when you need to, and it can undermine your buildings insurance if a gas-related incident happens while the certificate is out of date. Catching a developing fault early through a proper annual inspection is far cheaper than dealing with a mid-tenancy breakdown or, in the worst case, a safety incident.
How Olia’s Plumbing & Heating handles it
- Book. We work around tenant availability, including evenings and weekends where possible.
- Inspect. Every gas appliance, flue and pipework run checked by a Gas Safe registered engineer.
- Test. Combustion, pressure and safety device checks on each appliance.
- Certify. Digital CP12 issued and emailed to you and your tenants the same day.
- Flag issues. Anything found is classified clearly, with a transparent quote if repair work is needed.
- Gas Safe registered, experienced with landlord compliance across Kensington
- Digital certificate issued same day
- Flexible appointment times, including key collection with agents where needed
- Clear classification of any faults found, with an honest repair quote
- Can combine with a boiler service or repair visit on request
Book your landlord gas safety inspection.
Same-day CP12 certificate across Kensington.
Frequently Asked Questions
How often does a landlord gas safety check need to be done?
Every 12 months, by law, for every gas appliance and flue in the property. Call 020 7183 4810 to book yours.
How quickly will I get the certificate?
We issue the digital CP12 the same day, emailed to you and your tenants once the inspection is complete.
What happens if an appliance fails the inspection?
We classify it as Immediately Dangerous or At Risk, and with your permission isolate the hazard and give you a clear, upfront quote for the repair.
Can you coordinate directly with my tenants or letting agent?
Yes — we regularly arrange access and key collection directly with tenants or agents to save you the hassle.
Can you combine this with a boiler service?
Often, yes — mention it when you book and we can look at combining visits. See our Boiler Service London page.
Book your landlord gas safety inspection in Kensington
Call 020 7183 4810 or request a call-back to get your CP12 sorted.
Related services: Gas Engineer London · Gas Safe Engineer London · Boiler Service London · Why Is Gas Safety Necessary
Peyman
CEO & Founder — Gas Safe Registered Engineer
Peyman is the founder of Olia's Plumbing & Heating, a London based team with over 15 years of hands on experience in boiler installation and repair, central heating, gas work and emergency plumbing. He personally oversees jobs across Central and West London and writes these guides to help homeowners understand their heating systems.
- Gas Safe Registered
- 15+ years experience
- Covering all of London
