Gas
Landlord Gas Safety Certificates in PinnerCP12 Checks From £80
Stay legally compliant and keep tenants safe. Annual gas safety checks and CP12 certificates from £80, plus gas leak detection across North West London.
★ 4.8 from 94 Google reviews · No call-out charge · from £80
Service overview
Gas Safety Certificates (CP12): what it is and when you need it
What it is
A gas safety check inspects every gas appliance, fitting and flue in a property to confirm they are safe to use. For landlords, the result is recorded on a gas safety record, commonly called a CP12 certificate.
Who it's for
Landlords and letting agents, who are legally required to have gas appliances checked every 12 months. Also homeowners who want peace of mind, for example after moving house.
When you need it
Every 12 months for rental properties, before a new tenancy begins, when buying or moving into a home, or any time you suspect a gas appliance isn't working safely.
Why professional help matters
Faulty gas appliances can cause fires, explosions and carbon monoxide poisoning. For landlords, a missing or expired certificate is a legal breach that can bring serious penalties and invalidate insurance.
The cost of waiting
What happens if it's ignored
Carbon monoxide has no smell or colour. Symptoms, headaches, dizziness, nausea, are easily mistaken for flu. Regular checks of appliances and flues are one of the most important ways to prevent it.
Landlords who let certificates lapse face fines and potential prosecution, and may find it harder to regain possession of a property.
Gas leaks from pipework and fittings can go unnoticed until they become dangerous.
Common mistakes we see
- Letting the 12-month renewal date slip between tenancies.
- Not giving tenants a copy of the certificate.
- Assuming a boiler service is the same as a gas safety check.
- Ignoring a faint smell of gas.
Our process
How we handle your gas safety certificates (cp12)
- 1
Book a slot
We arrange access with you or your tenant directly.
- 2
Appliance checks
Every gas appliance checked for safe operation, gas pressure and correct burning.
- 3
Flue and ventilation
Flues and ventilation checked so fumes are safely removed.
- 4
Pipework and tightness
Gas supply checked for leaks, with gas detection equipment where needed.
- 5
Certificate issued
Results recorded on your gas safety certificate (CP12).
What you get
The benefits of doing it properly
Legal compliance
Meet your annual landlord gas safety obligations.
Tenant safety
Appliances and flues checked for safe operation.
Clear price
Gas safety certificates from £80.
Combined visits
Book with a boiler service (from £100) to save a second appointment.
Tenant liaison
We can arrange access directly with your tenants.
Flexible payment
Card, cash or bank transfer.
In detail
Gas Safety Certificates (CP12) explained
What a gas safety check covers
Checks include the gas tightness of the installation, standing and working gas pressures, burner operation, flue flow and spillage tests, ventilation, and the operation of safety devices on each appliance: boilers, gas hobs, cookers and gas fires.
If an appliance is found to be unsafe, we explain why, and quote to repair it. Safety comes first: in some cases an appliance must be isolated until repaired.
Landlord responsibilities
Landlords must arrange a gas safety check every 12 months, keep records, and give tenants a copy of the certificate. Appliances must be maintained in a safe condition between checks. Booking the check alongside the annual boiler service keeps everything on one visit.
Gas leak detection
If you suspect a gas leak, leave the property and call the National Gas Emergency Service on 0800 111 999. Once it's safe, we use gas detection equipment to locate leaks on pipework and fittings and carry out the repair.
Why homeowners choose J&L
J&L Plumbing and Heating Limited is owner-run and based in Pinner, led by Jack Webster, who has 24 years of experience in the plumbing trade. There is no call-out charge, every job is quoted free on site, and we're open 24 hours. Customers regularly mention fast response, honest advice, fair pricing and tidy, punctual work, and many use us again and again.
Pricing, quotes and payment
Gas Safety Certificates (CP12) starts from £80. We come out with no call-out charge, look at the job properly and give you a free quote on site before any work begins, so you decide with the full price in front of you, not after the bill arrives. Once the work is done and tested, you can pay by card on our card machine, in cash or by bank transfer. We're fully insured with public liability cover, and if something needs attention beyond the original job, we'll explain it and quote it separately rather than simply adding it on.
What to expect on the day
Customers regularly tell us the same things about the visit itself: we turn up when we say we will, explain what we've found in plain English, suggest the practical option rather than the most expensive one, and leave the area clean and tidy. Customers often mention Jack and Lawrence by name in their reviews.
Gas Safety Certificates (CP12) across North West London
We provide gas safety certificates (cp12) in Pinner, Harrow, Ruislip, Watford, Rickmansworth, Chorleywood, Northwood, Stanmore, Bushey and Wembley, as well as the surrounding parts of South West Hertfordshire.
Gas safety certificates, including landlord CP12, start from £80.
Landlords need a gas safety check every 12 months.
A CP12 checks all gas appliances are safe. A service maintains the boiler itself. We can do both on one visit.
Yes. We can arrange access with your tenants.
We explain the issue and quote for repair. Unsafe appliances may need to be isolated until fixed.
It isn't legally required for owner-occupiers, but it's worthwhile, especially after moving into a new home.
Card (we carry card machines), cash or bank transfer, whichever suits you on the day.
We are based in Pinner and cover Harrow, Ruislip, Watford, Rickmansworth, Chorleywood, Northwood, Stanmore, Bushey, Wembley and the surrounding parts of North West London and South West Hertfordshire.
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Get your gas safety certificates (cp12) sorted, with the price agreed first.
No call-out charge. Free quote on site. Open 24 hours. Rated 4.8★ from 94 Google reviews.