A boiler certificate only expires if it is a landlord gas safety record, often called a CP12. In England, under the Gas Safety (Installation and Use) Regulations 1998 as amended, the next safety check must follow within 12 months of the last one. It never needs renewing each year if it is the building regulations compliance certificate for the installation, because that document proves one piece of work and carries no expiry date. An Energy Performance Certificate sits between the two: it lasts 10 years.
Building regulations compliance certificate or landlord gas safety record: which one expires?
Two different documents get called "the boiler certificate", and only one of them runs on a clock. The table sets out what each one proves and what makes a new one necessary.
| Criterion | Building regulations compliance certificate | Landlord gas safety record (CP12) |
|---|---|---|
| What it proves | That a new or replacement boiler was notified and meets the building regulations in England | That each gas appliance and flue provided to a tenant was checked for safety on a given date |
| Expiry | No expiry date; it stays the proof of that one installation | The next check is due within 12 months of the date of the last one |
| Who it is for | Owner or landlord, mostly needed for a sale, remortgage or lease paperwork | Any landlord letting a property with gas appliances in England |
| What triggers a new one | New or replacement notifiable heating work, not the passing of time | Time passing, or a further gas appliance added to the let |
| Who issues it | An installer registered with a Competent Person Scheme, who notifies the council | A Gas Safe registered engineer who carried out the safety check |
| Keeping it | Filed with the property paperwork for any future sale or enquiry | Kept for two years, with a copy given to the tenants |
Only the landlord record sits in a 12-month cycle. That cycle comes from regulation 36 of the Gas Safety (Installation and Use) Regulations 1998 as amended, which applies in England. The building regulations certificate records one job. It keeps its value for as long as that boiler is in the property.
When the certificate never expires: the building regulations compliance certificate for a boiler
The building regulations compliance certificate for a boiler has no renewal date and no annual cycle. It is issued once, after a new or replacement boiler is fitted, and it says the work was notified and met the regulations. A Competent Person Scheme is a registration that lets an installer certify their own work instead of booking a building control inspection. GOV.UK states the certificate arrives within eight weeks of the work being completed.
Situations where this is the document people mean: you are selling and the buyer's solicitor asks for proof of the boiler change, you are remortgaging, or a freeholder wants evidence of notified work in a flat. In each case nobody is asking for a current document. They are asking for the original one.
A lost copy is not renewed either. The route is to go back to the scheme or the local authority for a duplicate or a regularisation application. Our guide to the building regulations compliance certificate after a new boiler sets out what the document should say.
When the certificate needs renewing each year: the landlord gas safety record
A landlord gas safety record needs replacing every 12 months, because the duty is to check, not to hold a piece of paper. In England, regulation 36 of the Gas Safety (Installation and Use) Regulations 1998 as amended requires each gas appliance and flue provided for a tenant to be checked within 12 months of installation, and then at intervals of no more than 12 months. Only a Gas Safe registered engineer may carry out that check.
HSE describes the record as valid for twelve months from the date of the check. Two further duties come with it under the same regulation:
- A copy goes to existing tenants within 28 days of the check.
- New tenants get a copy before they move in.
- The record is kept for two years.
- Each appliance and flue checked is listed, with the engineer's name and registration number.
A new tenancy part-way through the year does not restart the cycle. The existing record stays current and can be passed to the new tenants. What you can arrange is the next check, and our landlord gas safety certificate (CP12) page explains how a visit is booked.
Can a landlord renew the gas safety record early without losing the due date?
A landlord may have the annual gas safety check done up to two months before it falls due, and keep the original due date. The Gas Safety (Installation and Use) (Amendment) Regulations 2018 introduced that flexibility. The next deadline is then calculated as if the check had happened exactly 12 months after the previous one, so the cycle does not creep forward each year.
This matters when a tenant is away, when access is difficult, or when an engineer is already at the property for other work. One condition comes attached. HSE states that where the early check uses this flexibility, the record must be kept until two further checks have been carried out, rather than for the usual two years.
The 12-month cycle applies to landlords in England under the Gas Safety (Installation and Use) Regulations 1998 as amended. No boiler document needs renewing every year for an owner-occupier. If access is refused, HSE expects a landlord to show all reasonable steps were taken, such as written requests explaining that the check is a legal requirement.
Do homeowners get a certificate that expires, or something else?
Homeowners who live in their own property have no legal duty to hold an annual gas safety certificate in England. HSE strongly advises having appliances, flues and pipework checked and maintained every 12 months by a Gas Safe registered engineer. What arrives after that visit is usually a service record or an entry in the Benchmark logbook, which is the installation and servicing booklet that came with the boiler.
A service record has no expiry date printed on it. Its value is the date it carries. Manufacturers set the annual service as a warranty condition, so the gap between dates is what matters. Baxi, for example, requires registration of the warranty within 30 days of installation, a completed Benchmark checklist and an annual service to keep cover valid.
Skipping a year does not void the boiler itself. It can put the manufacturer's cover at risk, and the exact wording differs by brand, so check the terms for your own model. Our guide on how often a boiler should be serviced covers the usual intervals.
Does an annual boiler service count as the gas safety check that has to be renewed?
An annual boiler service does not automatically satisfy the landlord gas safety check, and the check on its own is not effective maintenance. HSE makes that separation plain: do not assume a service inspection covers the safety check, and do not assume the safety check covers servicing. The two have different purposes and different paperwork.
The gas safety check looks at whether appliances and flues are safe at that moment, and produces the record a landlord must issue to tenants. The service follows the manufacturer's instructions for that appliance, and keeps the warranty and the heating in order. Where manufacturer instructions are not available, HSE advises annual maintenance.
Both jobs can be done in the same visit by a Gas Safe registered engineer, and many landlords arrange it that way. The difference between them is set out in our guide on a gas safety check versus a boiler service.
Which boiler certificate to diarise yearly, and which to file away for good
Treat the certificate as expiring, and put a date in the diary, if you let the property: in England the landlord gas safety check must be repeated within 12 months, and a fresh record goes to the tenants each time. Treat the certificate as permanent, and file it with the property papers, if it is the building regulations compliance certificate for the boiler installation, because nothing about it is renewed.
If you live in the home yourself, neither document is on a yearly clock. The date to watch is the service interval, mainly because of the manufacturer's warranty conditions. An Energy Performance Certificate is a separate matter again, valid for 10 years or until a newer one replaces it.
When the boiler is due its annual visit, or a record is approaching its date, you can see what is covered on our boiler service and repairs page and arrange a time that suits you.
Sources
- The Gas Safety (Installation and Use) Regulations 1998, regulation 36 — legislation.gov.uk
- The Gas Safety (Installation and Use) (Amendment) Regulations 2018 — legislation.gov.uk
- Gas safety check records and what to keep — HSE
- Gas safety checks - what if…? — HSE
- Maintenance - gas appliances and flues — HSE
- Gas safety - Home owners — HSE
- Private renting: your landlord's safety responsibilities — GOV.UK
- Building regulations approval: use a competent person scheme — GOV.UK
- Buying or selling your home: Energy Performance Certificates — GOV.UK
- Boiler warranty information — Baxi