Landlord Gas Safety Certificates: A Guide for Leeds Landlords
If you let a property with gas appliances, the law says every appliance, fitting and flue must be safety checked by a Gas Safe registered engineer at least every 12 months. You must give existing tenants a copy of the record within 28 days of the check, give new tenants a copy before they move in, and keep each record until two more checks have been done.
That record is what most people call a landlord gas safety certificate, or a CP12. This guide covers what the law asks of you in England, what the engineer actually checks, the extra rule for Leeds landlords in selective licensing areas, and how to make the whole thing painless. If you just want it booked, see our landlord gas safety certificate service.
CP12, LGSR, gas safety certificate: what's the difference?
There isn't one. They're three names for the same document.
- Landlord Gas Safety Record (LGSR) is the formal name, based on the record the law requires.
- CP12 comes from the old CORGI form reference. CORGI was replaced by the Gas Safe Register in April 2009, but the name stuck.
- Gas safety certificate is what most landlords and letting agents call it.
The law in plain English
The rules come from regulation 36 of the Gas Safety (Installation and Use) Regulations 1998. As a landlord you must:
- Keep gas pipework, appliances and flues you provide in a safe condition.
- Have each appliance and flue checked within 12 months of installation, then at least every 12 months after that.
- Use a Gas Safe registered engineer. Ask to see their Gas Safe ID card, or check the Gas Safe Register.
- Give tenants a copy of the record (see the deadlines below).
- Keep the record until there have been two further checks.
The rules cover most residential lets: single lets, HMOs, student houses, and holiday accommodation such as cottages, flats, chalets and caravans. If a letting agent manages the property and the management contract makes them responsible for gas safety, the same duties apply to the agent. It's worth checking your contract says who books the check, because "I thought the agent did it" isn't a defence.
Key deadlines at a glance
| What | Deadline |
|---|---|
| Annual safety check | No more than 12 months after the last one |
| Booking early without losing your date | Any time in the 2 months before your deadline |
| Copy to existing tenants | Within 28 days of the check |
| Copy to new tenants | Before they move in |
| Lets of 28 days or less (e.g. holiday lets) | Display the record prominently in the property instead |
| Copy to Leeds City Council (selective licensing areas only) | Within 14 days of the check |
| Keeping records | Until two further checks have been done (about 2 years) |
How the 2-month rule works
Since 2018, a check done in the two months before your deadline counts as if it was done on the deadline itself (regulation 36A). So you can book early without your renewal date creeping earlier every year.
Example: your certificate runs out on 30 November. If we do the check any time from 1 October to 30 November, your next deadline is still 30 November next year. Book it on 15 September and your new deadline becomes 15 September.
Keep your old records. They're how you prove what your deadline date was.
What does a landlord gas safety check include?
The law sets the minimum (regulation 36(9), which points to regulation 26(9)): the engineer must check the flue works properly, the appliance gets enough air to burn safely, the gas pressure or heat input (or combustion performance) is right, and the appliance operates safely. In practice, on a typical rented house with a combi boiler and a gas hob, our engineer will:
- Tightness test the gas installation at the meter, to make sure there are no leaks on the pipework.
- Check each gas appliance you provide: boiler, hob, cooker and gas fire.
- Check the flue on the boiler (and any fire) is complete, properly supported and clearing fumes safely.
- Check ventilation where an appliance needs it.
- Test burner pressure or heat input against the manufacturer's figures.
- Analyse the flue gases on the boiler to confirm it's burning cleanly.
- Test the safety devices, such as flame failure devices on hobs and fires.
- Look at the general condition of each appliance and its installation.
You then get the record, listing each appliance, its location, what was checked, any defects and what was done about them.
Is a gas safety check the same as a boiler service?
No. The safety check confirms your appliances are safe to use today. A service goes further: the engineer opens up the boiler, cleans and checks the parts that wear, and catches faults before they turn into breakdowns. A service also keeps the manufacturer warranty valid.
Most of our landlords have both done in one visit. It's one appointment to arrange with the tenant, and the boiler gets a proper look at the same time. That's how Philip's boiler leak was found:
"Sulyam attended my job promptly to carryout annual service & gas certificate & identified a leak on the boiler & resolved it there & then, very pleased, will definitely use again" (Philip, Google review)
A gas safety check on its own wouldn't have fixed that leak. A boiler service on the same visit did. Landlords tend to stay with us for exactly that reason:
"We have been using Gas works Yorkshire for all our safety certificates, servicing and repair work. Prompt reliable service at a fair price." (Lee, Google review)
What happens if an appliance fails the check?
If the engineer finds a problem, they'll record it and classify it:
- Immediately Dangerous: a risk to life right now. With your permission the engineer will disconnect the appliance and label it Do Not Use. If permission is refused, they must call the gas emergency service, who can disconnect it. It mustn't be used until it's repaired.
- At Risk: not dangerous yet, but could become so. With your permission the engineer will turn it off and label it Do Not Use, and it shouldn't be used until it's repaired.
- Not to Current Standards: safe, but not to today's standards. No immediate action needed, but worth noting.
You're responsible for getting the fault fixed and the appliance rechecked. We can usually carry out the boiler repair on the same visit or soon after, and we won't tell you to replace a boiler that can be safely repaired:
"From gas certs to general gas and boiler repairs you name it gas works have saved me ££££s on repairs when others have claimed I need to replace the whole unit." (Salman, Google review)
If you're weighing up an old boiler that keeps failing, our guide to whether to repair or replace a boiler explains how we make that call.
Tenant appliances, access and electronic copies
Tenant-owned appliances. If a tenant brings their own gas cooker or fire, you're not responsible for checking that appliance. You are still responsible for the pipework supplying it and any flue you provide. Our engineer will tell you what they have and haven't checked.
When a tenant won't let you in. Don't force entry. The HSE expects you to take reasonable steps, which in practice means at least three attempts at access, each recorded in writing (letters, emails, texts). Keep that paper trail. See the HSE landlord FAQs.
Electronic records. You can send the record by email or keep it digitally, as long as it can be printed, it's stored securely, and it identifies the engineer who did the check.
Leeds selective licensing: an extra deadline
Leeds City Council's new selective licensing scheme started on 9 February 2026 and runs until 8 February 2031. It covers parts of six wards: Armley, Beeston & Holbeck, Burmantofts & Richmond Hill, Farnley & Wortley, Gipton & Harehills, and Hunslet & Riverside.
If your property is licensed under the scheme, the licence conditions say you must send a copy of the annual gas safety certificate to the council within 14 days of the check, on top of the copies you give tenants. Breaking a licence condition can mean an unlimited fine or a civil penalty of up to £40,000. Check whether your address is in the scheme on the Leeds City Council selective licensing page.
We cover every LS postcode, including all six selective licensing wards. See our Leeds coverage.
What's the penalty for not having a gas safety certificate?
Failing to carry out the annual check is a criminal offence. The HSE says landlords face a substantial fine and/or a prison sentence, and where a tenant is hurt or killed the consequences are far more serious.
In a case the HSE publicised in October 2026, a Wirral landlord who left a boiler unchecked for eight years was fined £2,400 and ordered to pay £5,000 in costs (HSE press release). In a Leeds licensed area you could also face the council's civil penalty.
What changed with the Renters' Rights Act?
Under the old rules, a landlord who hadn't given tenants a valid gas safety record couldn't use a Section 21 "no fault" eviction notice. Section 21 notices could no longer be served from 1 May 2026, and the last date to use an old notice in court was 31 July 2026 (gov.uk guidance), so that link has gone.
Your gas safety duties haven't changed at all. The annual check, the tenant copies and the record keeping are exactly the same.
Carbon monoxide alarms
Rented homes in England must have a carbon monoxide alarm in any room used as living accommodation that has a fixed combustion appliance, such as a boiler or gas fire (gas cookers are excluded). You must check the alarms work on the day a new tenancy starts. A CO alarm is a backstop, not a replacement for the annual check.
FAQs
How often do landlords need a gas safety certificate?
Every 12 months. You can have the check done up to two months before your deadline and keep the same renewal date, so there's no need to leave it to the last week.
What is a CP12 certificate?
CP12 is the old name for the Landlord Gas Safety Record, the document a Gas Safe engineer gives you after the annual safety check. CP12, LGSR and gas safety certificate all mean the same thing.
Can you do the boiler service and gas safety certificate in the same visit?
Yes, and most of our landlords do. It means one appointment with the tenant, and the service often catches faults the safety check alone wouldn't fix.
Do I need a gas safety certificate for an HMO?
Yes. The same annual check applies to every gas appliance and flue you provide in an HMO, whether it's in a tenant's room or a shared area. Where a tenant's room has no gas appliance, the record can be displayed in a prominent place instead, with a note that tenants can ask for their own copy and an address to ask at.
Do I need a gas safety certificate for a holiday let or Airbnb?
Yes. Holiday accommodation is covered. For lets of 28 days or less, you can display the record prominently in the property rather than give each guest a copy.
Is the letting agent responsible for the gas safety certificate?
Only if your management contract makes them responsible. If it does, they take on the same legal duties. If it doesn't, the duty stays with you, so check the contract.
How long do I keep gas safety records?
Until two further checks have been done, which in practice is about two years. Keeping them longer does no harm and helps you prove your deadline dates.
Need your gas safety certificate booked?
We carry out landlord gas safety checks across Leeds and the LS postcodes, plus Bradford, Wakefield, Harrogate and York, for private landlords and letting agents. We can do the boiler service on the same visit and fix most faults there and then.
"Prompt to deal with polite on the phone prompt delivery of certificate" (Grace, Google review)
Book your landlord gas safety certificate with us, or call 07516 690791.
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