Gas Safety (Installation and Use) Regulations 1998 — Landlord Duties Explained

The Gas Safety (Installation and Use) Regulations 1998 (SI 1998/2451) are the principal statutory instrument governing gas safety in rented residential premises in Great Britain. Regulation 36 requires landlords to have every gas appliance, fitting and flue they provide safety-checked at least once every 12 months by a Gas Safe registered engineer, to give tenants the resulting safety record within set timescales, and to keep records for at least two years. Breach is a criminal offence under the Health and Safety at Work etc. Act 1974, and — since March 2015 — carries an unlimited fine in either the magistrates' court or the Crown Court, not the capped £20,000 many landlords still assume applies. This guide sets out the current, amended position: the annual duty, the 2018 "early check" flexibility, record-keeping and tenant-access rules, the real penalty regime, and how gas safety now sits alongside the Renters' Rights Act 2025.

What the Regulations do

The 1998 Regulations re-enacted, with amendments, the Gas Safety (Installation and Use) Regulations 1994, and have themselves been amended several times since — most significantly by the Gas Safety (Installation and Use) (Amendment) Regulations 2018, which inserted a new regulation 36A. The Regulations are made under the Health and Safety at Work etc. Act 1974 and are enforced by the Health and Safety Executive (HSE), not by a tenancy court. They cover the safe installation, maintenance and use of gas fittings and appliances using both mains gas and LPG.

For landlords, regulation 36 is the operative provision. It applies to anyone renting out a property under a lease of less than seven years or under a licence — which, per HSE guidance, covers private tenancies, HMOs, bed-sits, lodger arrangements, hostels and holiday accommodation such as chalets, cottages, flats, caravans and narrow boats. A landlord cannot delegate this duty to a tenant, and where a property is sub-let, the original landlord generally remains responsible unless the sub-letting contract clearly reallocates it.

Regulation 36 — the annual duty

The core landlord duty is to ensure a safety check is carried out:

• Within 12 months of an appliance or flue being installed.
• At intervals of not more than 12 months after that.

The 12-month period runs from the date of the previous check, not from the date a tenancy begins or renews. A boiler last checked on 10 March 2026 must be re-checked by 10 March 2027 — a check on 15 March 2027 is five days late and non-compliant, regardless of tenancy dates.

The check must be carried out by a person registered with Gas Safe Register, the sole body for gas engineer registration in Great Britain since it replaced CORGI on 1 April 2009 (see HSE guidance). Engineers must be registered for the specific category of work (boilers, fires, flues, LPG appliances, etc.) — HSE recommends checking the engineer's ID card, which lists what they're qualified to work on, before any work starts.

The "early check" flexibility (regulation 36A)

Regulation 36A, in force since the 2018 amendment, allows a check to be carried out up to two calendar months before the deadline while keeping the original anniversary date — as if the check had been done exactly 12 months after the previous one. A boiler due for its check by 10 March 2027 can be checked as early as 10 January 2027, and the next deadline still falls on 10 March 2028.

This is an early-check allowance only. There is no equivalent flexibility for a late check. Under regulation 36(3)(c), the record must generally be kept until two further checks have been completed regardless of whether regulation 36A was used — see Record-keeping below.

Providing the record to tenants

Under regulation 36(6), read with current HSE guidance, the landlord must:

• Give existing tenants a copy of the safety record within 28 days of the check.
• Give new tenants a copy before they move in.
• For short lets under 28 days (e.g. some holiday lets), display the record prominently instead of issuing individual copies, and tell tenants where to find it and how to request their own copy.

An electronic copy is acceptable if the tenant agrees to receive it that way and can access it — but a paper copy must be provided on request. The record itself is still widely called the "CP12", a name carried over from the pre-2009 CORGI form number; the current document is formally the Landlord/Home Owner Gas Safety Record.

Historically, under the old Section 21 regime, failing to serve the gas safety record on time (particularly the pre-occupation record for new tenants) could invalidate a Section 21 notice outright. Section 21 has been abolished — see Gas safety and the Renters' Rights Act 2025 below for what has actually changed and what hasn't.

Record-keeping — what to keep, and for how long

The minimum record content, HSE-specified, is: a description and location of each appliance/flue checked; the engineer's name, registration number and signature; the check date; the property address; the landlord's (or agent's) name and address; any safety-related defect and remedial action taken; and confirmation that the check covered the matters in regulation 26(9)(a)-(d).

Retention rules, under regulation 36(3)(c) as amended in 2018:

• The general rule is to keep each record until there have been two further checks — in practice, since checks happen annually, that is roughly two years, but it is defined by checks completed, not a fixed calendar period.
• Two years from the date of issue applies specifically where the appliance or flue has been removed from the premises — the "two further checks" measure obviously cannot apply once there is nothing left to re-check.
• Records can be stored electronically provided they can be reproduced in hard copy on request, are secure from loss or interference, and uniquely identify the registered engineer.

Whichever rule applies, the safest practice is to keep every record indefinitely — see below.

Best practice, regardless of the statutory minimum, is indefinite digital retention — records may be needed for insurance claims, possession proceedings, or future PRS Database registration.

Access, refusal, and reasonable steps

Landlords must take reasonable steps to arrange access; tenants are expected to allow it at a reasonable time with reasonable notice. Where a tenant refuses, HSE's own guidance is explicit that a landlord must be able to show they took all reasonable steps before a refusal can help as a defence to non-compliance. In practice, HSE inspectors look for a documented pattern along these lines:

• A notice left at the property recording the attempted visit and the landlord's contact details.
• A follow-up letter explaining that the check is a legal requirement and offering the tenant the chance to book their own appointment.
• HSE guidance suggests at least three documented attempts before a refusal defence is likely to hold up, though the right number depends on the circumstances — it is ultimately a matter for a court.

Building an access clause into the tenancy agreement, and keeping a written log of every attempt, is the practical way to protect the position.

Between tenancies

Regulation 36(2) also covers ongoing maintenance, including before a new tenancy starts. Before re-letting, HSE guidance recommends confirming that all appliances and flues have an up-to-date safety check, considering a fresh check if the property has stood empty (risk of tampering or vandalism), and clarifying ownership of any appliance a departing tenant has left behind before including it in future checks.

Penalties — the current position

This is the area where older guidance (including earlier versions of this page) tends to understate the risk. The correct, current position:

• Any court, summary or indictment: since 12 March 2015 (section 85, Legal Aid, Sentencing and Punishment of Offenders Act 2012), the historic £20,000 statutory cap on fines in the magistrates' court for health and safety offences was removed. Magistrates' courts and the Crown Court can both impose unlimited fines for a breach under section 33 of the Health and Safety at Work etc. Act 1974.
• Imprisonment: the Health and Safety (Offences) Act 2008 made imprisonment available for these offences — up to 12 months on summary conviction in the magistrates' court, and up to 2 years on conviction on indictment in the Crown Court.
• Civil penalties: local authorities have a separate power, under section 249A of the Housing Act 2004 (inserted by the Housing and Planning Act 2016), to impose civil penalties of up to £30,000 as an alternative to prosecution — rising to £40,000 for breaches and offences committed on or after 1 May 2026. This route is most commonly used alongside failure to comply with an improvement notice (where a gas hazard has been formally identified under the Housing Health and Safety Rating System) or a breach of HMO management regulations, rather than as a standalone penalty for a bare regulation 36 breach.
• Manslaughter: where a death results and the failure was a substantial cause, gross negligence manslaughter charges — a common law offence with no fixed statutory maximum below life imprisonment — have followed alongside the regulatory prosecution. Reported cases include substantial custodial sentences; Greater Manchester Police, for example, reported two landlords jailed for nine and eight years respectively after a tenant died of carbon monoxide poisoning caused by an unsafe installation.

The HSE prosecutes the more serious cases directly; local authorities tend to use the civil penalty and improvement-notice routes for less severe or more clearly documented breaches. Both can run in parallel, and portfolio landlords who let compliance slip across multiple properties face penalties multiplying accordingly.

Carbon monoxide alarms — the related duty

Since 1 October 2022, landlords in England must fit a carbon monoxide alarm in any room used as living accommodation that contains a fixed combustion appliance (gas cookers are excluded), under the amended Smoke and Carbon Monoxide Alarm (England) Regulations 2015. This sits alongside, not instead of, the regulation 36 safety-check duty.

Gas safety and the Renters' Rights Act 2025

Section 21 has been abolished with effect from 1 May 2026; all tenancies are now periodic assured tenancies, and landlords seeking possession use the Section 8 grounds-based route. This changes what a missing gas safety record actually does to a possession claim:

• Under the old regime, failing to serve the gas safety record (particularly the pre-occupation copy) could invalidate a Section 21 notice on its own.
• Under the current Section 8 system, a missing gas safety record does not automatically invalidate a possession notice in the same mechanical way.
• Gas safety compliance remains directly relevant elsewhere: to the Housing Health and Safety Rating System and Decent Homes Standard duties a landlord owes throughout the tenancy, and — once the Private Rented Sector Database becomes mandatory (a phased rollout the Act introduces, expected from late 2026) — to registering a property at all, since landlords will need to upload a valid gas safety certificate as part of registration.

In short: gas safety compliance has not become optional. It has moved from being a narrow procedural trip-wire for one specific eviction route to being a standing, continuously enforced duty backed by HSE prosecution, local authority civil penalties, and (prospectively) database registration.

Practical compliance checklist

• Calendar the renewal date for each property from the most recent check, with reminders well before the 12-month mark.
• Verify the engineer on Gas Safe Register before booking, and keep evidence of the check at the time.
• Use the regulation 36A window (up to two months early) to build buffer for scheduling and remedial work, but keep records until two further checks are done if you rely on it.
• Send the record to tenants promptly — well inside the 28-day limit — and keep proof of delivery.
• Log every access attempt in writing if a tenant is difficult to reach.
• Fit and test carbon monoxide alarms in every room with a fixed combustion appliance.
• Treat "Immediately Dangerous" and "At Risk" findings as urgent — do not wait for a convenient moment to act on them.

This page is general information about the current statutory position for landlords in England, prepared under non-practising solicitor review; it is not a substitute for professional advice on the facts of a specific property or tenancy.