Gas safety certificate expired: what happens now

An expired record is a legal problem with a short fix. The duty runs on the calendar, so the day the 12 months are up without a new check, the landlord is in breach, whatever state the appliances are in. A Gas Safe registered engineer attends, the record is issued on completion of the checks, and the 12 months run again from that date. What follows is where you stand in the meantime, and what to do first.

What does an expired gas safety certificate mean legally?

It means the annual check is overdue and you are in breach until a new one is carried out. Regulation 36(3)(a) of the Gas Safety (Installation and Use) Regulations 1998 puts the duty in plain terms: each appliance and flue must be checked for safety within 12 months of being installed and “at intervals of not more than 12 months since it was last checked for safety”. The breach is the missed deadline, not the condition of the boiler, so a perfectly healthy appliance and a clean history do not cure it.

The one piece of flexibility in the regulations sits before the deadline, not after it. Regulation 36A, inserted by the Gas Safety (Installation and Use) (Amendment) Regulations 2018, says that a check completed “within the period of 2 months ending with the deadline date” is treated as having been made on the deadline date, so an early check keeps your original anniversary instead of dragging it forward. Nothing in the regulations extends anything once the date has passed. That is the whole of the “grace period” people have half-remembered, and it points the other way.

Where do you stand in your situation?

The duty is the same in every case; what changes is the next move and the evidence you should be keeping. The table below covers the six situations landlords and tenants ask about most.

What should you do today if the certificate has expired?

What are the penalties for letting with an expired certificate?

Breaching regulation 36 is a criminal offence that HSE prosecutes, and HSE's own summary of the consequences is short: it “could result in a substantial fine and/or a custodial sentence”. The maximum penalties come from Schedule 3A to the Health and Safety at Work etc Act 1974, and they are considerably higher than most landlords expect.

You will also see civil penalties of £7,000 and £40,000 quoted for expired gas certificates. Those figures are real, but they belong to the Renters' Rights Act, and GOV.UK's guidance attaches them to the Act's own duties, such as registering on the Private Rented Sector Database or joining the ombudsman scheme. The Act's landlord guidance does not mention gas safety, so we have not repeated the connection here. The annual gas check is enforced by HSE under the 1998 regulations, and that is where the exposure sits.

Can you evict a tenant if the gas safety certificate expired?

Not by the old route, because section 21 no longer exists. The Renters' Rights Act changes took effect in England on 1 May 2026: all assured shorthold tenancies became assured periodic tenancies, no-fault eviction is gone, and possession now runs on section 8 grounds you have to state and evidence, with a notice period that is four months in many cases. Until then, giving the tenant the gas safety record was a prescribed requirement for a valid section 21 notice, and the Court of Appeal held in Trecarrell House Ltd v Rouncefield [2020] EWCA Civ 760 that a record given late, provided it reached the tenant before the notice was served, did not sink it. Our guide to section 21 and gas safety covers that history and what replaced it.

The practical effect for a landlord with a lapsed record is the opposite of relief. A possession claim now invites a look at your own compliance, and safety records are the first drawer a tenant's adviser opens.

What can a tenant do if the certificate has expired?

Ask for the record in writing first, because you are entitled to it. GOV.UK states the landlord's duty from the tenant's side: a registered engineer must do an annual check on each appliance and flue, and you must be given a copy of the record before you move in, or within 28 days of the check. The regulations also let you ask to inspect the record on reasonable notice at any time.

• If the landlord will not act, GOV.UK's route is to complain to them first, then to a designated person such as your MP or a local councillor, then to your council, which can inspect the property.
• HSE runs a free Gas Safety Advice Line on 0800 300 363 if you want to check where you stand before making a complaint.
• Never use an appliance you believe is unsafe. If you smell gas, call the National Gas Emergency Service on 0800 111 999, open the doors and windows and turn the supply off at the meter control valve.
• If a Gas Safe registered engineer disconnects your heating because it is unsafe, the landlord must provide emergency heating while the repair is arranged.
• Let the engineer in when access is offered. Refusing access does not put the landlord in the wrong, and it is the one thing that can leave a genuinely unsafe appliance unchecked.

Does an expired certificate affect insurance or a mortgage?

Read your own documents, because there is no single rule to quote. Landlord policies and buy-to-let mortgage conditions often contain a general condition to comply with your statutory obligations, and an expired gas record is a breach of one of those. We could not verify any blanket rule that a lapsed record voids cover or breaches every lender's terms, so treat confident claims either way with caution and check the wording you actually signed. If you are unsure, ask your insurer or broker, and get the check booked in the meantime, which settles the question.

How do you stop a certificate expiring again?

Work from the next-due date rather than the last-check date, and let something other than memory watch it. Regulation 36A means a check done in the two months before the deadline keeps your original date, so booking at month 10 gives you two months of slack for tenant holidays, failed appointments and busy engineers, at no cost to your anniversary. Our free CP12 renewal checker turns a last-check date into that window and the deadline it protects.

Manifold, the software this site belongs to, is built for the Gas Safe engineers who carry out the checks. Every property's next-due date is tracked, and reminders go out at 60, 30 and 7 days before it, then again once a record is overdue, so the chase starts before the deadline rather than after it. However you do it, the principle holds: certificates do not lapse on properties where a date is being watched.