A landlord gas safety certificate that has expired puts you in breach of Regulation 36 of the Gas Safety (Installation and Use) Regulations 1998 (as amended) in England, and there is no grace period. Book a Gas Safe registered engineer to carry out a new check as soon as you can, because only that check restores compliance. This guide explains the 12-month rule, the two-month early-renewal window that no longer applies once the date has passed, what to do when a tenant will not give access, and who must receive a copy of the new record.
Is it illegal to let a property with an expired landlord gas safety certificate?
Letting a property in England with an expired landlord gas safety certificate breaches Regulation 36 of the Gas Safety (Installation and Use) Regulations 1998 (as amended). That regulation requires every gas appliance and flue you provide to be checked at intervals of no more than 12 months.
The duty falls on the landlord. In the regulations, a landlord is anyone letting under a tenancy of less than seven years or under a licence. HSE lists private landlords, housing associations, councils, hotels, bed and breakfasts, colleges, boarding schools and hostels among those covered.
The Health and Safety Executive (HSE), the regulator for gas safety, prosecutes landlords who let the check lapse. In a case published in October 2026, a landlord was sentenced after a gas boiler went unchecked for eight years. The local council had reported the property to HSE. An expired record is not only a paperwork problem, because the check itself is what the law requires.
Is there a grace period after a landlord gas safety certificate expires?
No grace period applies once a landlord gas safety certificate has expired. The 12-month interval in Regulation 36 of the Gas Safety (Installation and Use) Regulations 1998 (as amended) is a maximum, not a target with leeway afterwards.
The rule that landlords often mistake for a grace period works the other way round. Since the 2018 amendment, the check may be carried out up to two months before the due date while keeping the original due date. HSE describes this as an MOT-style arrangement, so an early check does not shorten your annual cycle.
That flexibility sits before the deadline only. Once the date has passed, the new 12-month cycle runs from the date of the next check, and the anniversary moves. You can read more on timing in our guide to renewal, early checks and lapsed records.
An expired landlord gas safety certificate does not pause the duty, and nothing you do as a landlord restores it except a new check. Only a business registered with Gas Safe Register may carry out that check on your appliances, flues and gas pipework.
Renewing two months early compared with a landlord gas safety certificate that has already expired
A check carried out up to two months before the due date keeps the original expiry date under the Gas Safety (Installation and Use) Regulations 1998 (as amended). Once a landlord gas safety certificate has expired, that early-renewal rule no longer helps and a fresh 12-month cycle starts from the new check.
| Criterion | Checked up to two months early | Checked after the date has passed |
|---|---|---|
| Legal position in England | Within the maximum 12-month interval required by Regulation 36 | In breach until a Gas Safe registered engineer completes a new check |
| Next due date | Stays on the original anniversary, as if checked exactly 12 months on | Runs 12 months from the new check, so the anniversary date shifts |
| Time to arrange access | A two-month window to agree a date with the tenant | No window left; you record every reasonable step taken to get in |
| Copy to existing tenants | Within 28 days of the check, as usual | Same 28-day deadline, counted from the late check |
What to do first when your landlord gas safety certificate has expired
Arrange a check by a Gas Safe registered engineer as the first step after a landlord gas safety certificate expires. Under HSE guidance, only a business registered with Gas Safe Register may check gas appliances, flues and pipework, whoever owns the property.
Give the engineer a list of every gas appliance and flue you provide, and say where each one sits. If a check finds a defect, you must put it right without delay. Where an appliance is suspected of being unsafe, it must not be used until the fault has been dealt with.
While you wait, a tenant or a householder may safely check only these four things:
- the boiler pressure on the gauge or display
- the thermostat and programmer settings
- the reset button on the boiler
- bleeding a radiator that is cold at the top
Anything touching gas, the flue, seals, the condensate inside the appliance or the boiler casing is work for a Gas Safe registered engineer. Our landlord gas safety certificate (CP12) service covers the check itself.
What if the tenant will not let the engineer in for an overdue gas safety check?
A landlord who cannot get access must show "all reasonable steps" to carry out the overdue gas safety check. HSE is clear that the Gas Safety (Installation and Use) Regulations 1998 (as amended) give you no right of entry, and force must never be used.
HSE inspectors expect at least three attempts, depending on the circumstances. Steps that count include leaving a notice with your contact details, writing to explain that the check is a legal requirement for the tenant's own safety, and keeping a record of every attempt.
Keep copies of letters, texts and missed appointments in one file. As a last resort, you can take legal action under the terms of the tenancy agreement. A tenancy agreement that allows access for maintenance and safety checks makes this far easier.
Who gets a copy of the new gas safety record, and how long must you keep it?
Existing tenants must receive a copy of the gas safety record within 28 days of the check, and new tenants must get it before they move in. Keep each record for at least two years, which in practice means until two further checks have been done.
Check the record before you file it. HSE sets out what it must contain:
- a description and the location of each appliance and flue checked
- the name, registration number and signature of the engineer who carried out the check
- the date of the check and the address of the property
- the name and address of the landlord or the letting agent
- any safety defect found and the action taken about it
A record missing one of these fields is worth querying straight away. More on the handover deadlines is in our guide on giving your tenant a copy of the gas safety certificate.
Does an annual boiler service replace the expired landlord gas safety check?
An annual boiler service does not replace a landlord gas safety check, and a safety check on its own is not enough maintenance. HSE treats the two duties separately under the Gas Safety (Installation and Use) Regulations 1998 (as amended).
The safety check looks at whether each appliance and flue is safe to use on the day. Maintenance keeps the appliance in a safe condition over time, and it should follow the manufacturer's instructions. Where no instructions exist, HSE advises an annual service.
Boiler guarantees usually hang on the same point. Vaillant, for example, requires an annual service by a Gas Safe registered engineer in line with its instructions, recorded in the Benchmark logbook. The difference between the two jobs is set out in our guide on a gas safety check compared with a boiler service. If the overdue check turns up a fault, you can arrange a boiler service or repair for the same property while the engineer is there.
Sources
- legislation.gov.uk – Gas Safety (Installation and Use) Regulations 1998, Regulation 36
- HSE – Gas safety check records and what to keep
- HSE – Gas safety check: who can do it?
- HSE – Dealing with tenants
- HSE – Maintenance: gas appliances and flues
- HSE Press – Landlord sentenced for leaving gas boiler unchecked for eight years
- GOV.UK – Private renting: your landlord's safety responsibilities
- GOV.UK – Repossessing your privately rented property after 1 May 2026