Gas safety for landlords: certificates, costs and the law

If you let a home with a gas appliance you provide, every appliance and flue must be checked at least every 12 months by a Gas Safe registered engineer, with the record kept for two years and copies given to tenants. This hub covers the rule, the cost and the penalties.

What does the law require of landlords on gas safety?

The duty comes from regulation 36 of the Gas Safety (Installation and Use) Regulations 1998. HSE, which enforces it, now calls the document a landlord gas safety record. Older names include gas safety certificate and CP12, and all mean the same thing.

Four practical points follow from the rule:

• Appliances you provide. Permanent or portable gas appliances and flues you own and supply to tenants are covered, including a communal boiler serving several dwellings. Appliances the tenant owns are not covered, though you still have duties for the pipework.
• Repairs and defects. If the engineer records a defect, you must act promptly. An appliance that may be dangerous must not be used until fixed.
• Empty properties. Between tenancies you still need an up-to-date record before new tenants move in.
• Access. If a tenant will not let the engineer in, HSE expects you to show reasonable steps, with at least three documented attempts, and never to use force.

How often is a landlord gas safety record needed?

Every 12 months for each appliance and flue. Since an amendment that came into force on 6 April 2018 you can have the check done up to two months before it is due and still keep the original deadline, rather like an MOT. HSE describes it as a check done any time from 10 to 12 months after the previous one. If you use the early window, keep the record until two further checks have been done.

Our renewal calendar works out your window for each property.

Who can carry out a gas safety check?

Only an engineer on the Gas Safe Register. Check the engineer’s ID card: HSE says the back of the card shows which types of gas work they are competent to carry out, so make sure it covers your appliances. Gas Safe Register does not control prices, so HSE suggests getting quotes from three engineers. Our find a professional page links to the official registers.

How much does a landlord gas safety certificate cost?

In the published prices we found in October 2026, a landlord gas safety certificate ranged from about £40 to £120, depending on appliances and location. These are published prices, not our own survey.

Our detailed guide to landlord gas safety certificate costs has the full price table, the factors that move the price and a worked example.

Who must receive a copy and how long do I keep it?

Electronic copies are fine if the tenant agrees and can access them, but a paper copy must be given on request. Records can be stored electronically if they can be reproduced in hard copy, are secure and identify the engineer.

What are the penalties for missing a gas safety check?

HSE says breaching the regulations puts lives at risk, that it gives gas safety high priority and that consequences could include a substantial fine and/or a custodial sentence. There is no fixed fine in the regulations. The real exposure is wider than the fine. A faulty appliance can cause carbon monoxide poisoning, fire or an explosion, and in England your gas safety record and issue date will be requested when you register on the new landlord database, which opens on 15 December 2026.

How do the rules differ across the UK?

• England and Wales. The 1998 Regulations apply to both. Rent Smart Wales lists a gas safety certificate among the items a landlord must have in place before starting possession proceedings in Wales.
• Scotland. The same Regulations apply. The Scottish repairing standard guidance sets out the annual check, a two-year record and copies to tenants within 28 days or before a new tenancy starts.
• Northern Ireland. nidirect says landlords must arrange an annual safety check for gas boilers with a Gas Safe registered engineer and give the tenant the record within 28 days.

What else should a gas-safety-conscious landlord check?

Carbon monoxide alarms are a separate duty. Since 1 October 2022 in England, landlords must provide a carbon monoxide alarm in any room used as living accommodation that contains a fixed combustion appliance (gas cookers excluded). See smoke and carbon monoxide alarm rules.

The gas record is one of several documents. For the electrical report see EICR certificate cost, and for the full list across gas, electrical, EPC, alarms, deposits and registration see our landlord certificates checklist. The compliance checker builds a list for your property, and the Renters’ Rights Act guide explains how the new database uses your certificates.

What does a landlord gas safety check involve?

The engineer visits, examines each appliance and flue you provide and issues the record when all the checks are complete, even if a defect is found. According to HSE, the record must confirm that the check covered the matters in regulation 26(9) of the 1998 Regulations. Those are the effectiveness of the flue, the supply of combustion air, the operating pressure or heat input, and safe operation. The record also lists each appliance and its location, the engineer’s name, registration number and signature, the date, the property address, your name and address (or your agent’s), and any defect found and action taken.

A boiler service is a different thing. It is maintenance, usually offered as an add-on, and the law does not require it of landlords. Our cost guide shows the add-on prices we found.

Does the duty cover lodgers, sub-lets and holiday lets?

HSE says a lodger who pays rent means you are treated as a landlord and need an annual check. If a property is sub-let, the original landlord stays responsible and cannot hand the duty on. A family member staying rent-free is not covered by the regulations, although HSE still recommends servicing appliances as the manufacturer advises. Hotels and bed and breakfasts are not exempt: appliances serving guest accommodation need an annual check, even when sited away from the guest rooms. For stays of 28 days or less, a copy of the record must be displayed prominently on the premises instead of being handed to each occupier.

All our gas safety and landlord certificate guides

• Landlord gas safety certificate cost: prices, the two-month early window, copies and penalties.
• Landlord certificates checklist: every certificate, frequency and nation differences.
• Smoke and carbon monoxide alarm rules: what to fit and where.
• Renewal calendar: track every due date.
• Find a professional: official registers for engineers and assessors.

This guide explains the rules as published on 30 October 2026; for a specific property, check with your local council or a qualified professional.