In this guide
The annual gas safety inspection is one of the most fundamental landlord obligations in England and Wales. A lapsed Gas Safety Record — formally known as the CP12 — can result in unlimited fines, criminal prosecution, and from 1 May 2026, an automatically voided Section 8 notice. There is no grace period. This guide covers every requirement, every appliance, and the exact sequence needed before serving any possession notice.
What Is the CP12 and Who Can Issue It?
Only a Gas Safe registered engineer can issue a valid Gas Safety Record
The Gas Safety Record (commonly called the CP12) is the document issued following an annual inspection of all gas appliances and pipework in a rental property. It is a legal requirement under the Gas Safety (Installation and Use) Regulations 1998. Only an engineer on the Gas Safe Register can carry out this inspection and issue a valid record. You can verify any engineer at gassaferegister.co.uk.
The inspection covers
- Boiler (central heating)
- Gas fires (fixed)
- Gas cookers and hobs
- Back boilers
- Gas meter and supply pipe connections
- Flues and exhaust systems
- Isolation valves at each appliance
Not included
- Tenant's own portable gas appliances
- Gas appliances that have been disconnected and capped
- Electric properties with no gas supply (no CP12 required)
- Gas appliances in a common area managed by a freeholder
Always verify the engineer: Only an engineer listed on the Gas Safe Register can carry out this inspection legally. If a tenant or third party reports that an unregistered person carried out the inspection, the record is invalid. Check registration at gassaferegister.co.uk before booking.
How Often Is It Required?
Annually — and there is no statutory grace period
The gas safety inspection must be carried out every 12 months. The renewal date is 12 months from the date of the previous inspection — not from the tenancy start date, not from the date the record was issued, and not from when it was served on the tenant.
Do not rely on engineer reminders
Some engineers send annual reminders — but this is not a legal obligation on their part. If they miss the reminder or you change engineer, you may not be alerted. LandlordAssist sends Telegram alerts at 90, 30, and 7 days before expiry for every property.
The Record-Keeping Requirements
You must keep records for at least 2 years — and the record must contain all specified information
The Gas Safety Record is a legally prescribed document. The inspection alone is not sufficient — the record must contain all of the following items. If a record is incomplete, it may not satisfy your legal obligation even if the inspection was carried out.
- Date the inspection was carried out
- Address of the property inspected
- Name of the Gas Safe registered engineer
- Engineer's Gas Safe registration number
- Full list of appliances inspected (make, model, and location)
- Any defects or safety issues found
- Action taken to remedy any defects
- Result of the inspection (pass or fail)
Retention period: Records must be kept for at least 2 years. In practice, keep every record for the full duration of a tenancy plus 2 years — deposit dispute and civil claim timescales mean you may need records well beyond the minimum legal period.
Serving the Certificate to Tenants
New tenants must receive a copy before they move in — not after
Carrying out the inspection and retaining the record is not sufficient — you must also provide a copy of the Gas Safety Record to each tenant. The timing and method depend on the circumstances.
A copy of the current Gas Safety Record must be provided to the tenant before they move in — not at the point of moving in, and not afterwards.
A copy of the new record must be provided within 28 days of the annual inspection being completed.
Must be able to see the current Gas Safety Record before signing any tenancy agreement if they request it.
Landlord must retain a copy of every record for at least 2 years, irrespective of tenant turnover.
LandlordAssist tracks certificate service alongside the inspection date.
Every time you upload a new CP12, you can log when it was served to the tenant — creating a timestamped record you can produce instantly if challenged.
Get early access — freeWhat Happens If You Miss It
Unlimited fine, up to 6 months imprisonment, and each appliance is a separate offence
The Health and Safety Executive (HSE) is the enforcing authority for gas safety in rental properties. Tenants can and do contact the HSE directly — and HSE inspectors can attend a property without prior notice. The consequences of a lapsed or missing gas safety record are serious.
Improvement notice
HSE can issue an improvement notice requiring the inspection to be carried out within a specified period. Failure to comply with the notice is a further criminal offence.
Prosecution and fine
Criminal prosecution under the Gas Safety (Installation and Use) Regulations 1998. On conviction: unlimited fine and/or up to 6 months imprisonment. Each appliance where a record is not kept constitutes a separate offence.
Civil claim
Tenants who suffer injury, illness, or financial loss as a result of a gas safety failure can bring a civil claim against the landlord. This is separate from any criminal proceedings.
Each appliance is a separate offence
A property with a boiler, a gas fire, and a gas hob — where no valid record is kept — is three separate offences. Each can result in a separate prosecution and separate fine. Courts do not automatically consolidate these.
The Section 8 Connection
A lapsed gas cert voids your Section 8 notice — even for serious rent arrears
A lapsed or missing Gas Safety Record voids a Section 8 notice. From 1 May 2026, this is explicitly enforced under the Renters' Rights Act regime — courts will strike out any Section 8 notice where the gas certificate was not current at the time of service and a copy had not been provided to the tenant.
The required sequence before serving any Section 8 notice
- 1
Gas inspection completed
The annual inspection must have been carried out by a Gas Safe registered engineer within the 12-month window.
- 2
Gas Safety Record obtained
The record — containing all required information — must have been issued by the engineer.
- 3
Copy provided to tenant
A copy of the record must have been provided to the tenant. For existing tenants, this must be within 28 days of the inspection. You must be able to evidence the date of service.
- 4
Then — and only then — serve Section 8
Once all three conditions are met, the gas safety prerequisite is satisfied. LandlordAssist checks this automatically in the S8 preflight check.
Retrospective protection does not apply: You cannot serve a Section 8 notice and then arrange the gas inspection afterwards. The certificate must be current, and the tenant must have received their copy, before the notice is served. Courts do not accept post-service compliance as remediation.
Boilers, Gas Fires, Cookers — What's Covered
All fixed gas appliances — not tenant's own portable equipment
The Gas Safety Record covers all gas appliances and associated pipework that form part of the landlord's installation. Understanding exactly what is and is not covered avoids two common errors: failing to include an appliance that is covered, or requesting an inspection of equipment that is not the landlord's responsibility.
- Central heating boiler
- Fixed gas fires (including wall-mounted)
- Gas hob and/or oven (if landlord-installed)
- Back boiler units
- Gas supply pipe from meter to appliances
- Flue and exhaust systems for all appliances
- Tenant's portable gas appliances
- Disconnected and capped appliances
- Electric-only properties (no gas supply)
- Gas appliances in common areas (freeholder's responsibility)
- Appliances in outbuildings not let as part of tenancy
Disconnected appliances: An appliance that has been properly disconnected and capped by a Gas Safe engineer does not need to be included in the annual inspection. However, the disconnection itself should be documented and the record kept — in case there is ever a dispute about what appliances are in the property.
How LandlordAssist Tracks Gas Safety
90-, 30-, and 7-day alerts, certificate upload with expiry tracking, and S8 preflight check
Annual reminder system
LandlordAssist sends Telegram alerts at 90 days, 30 days, and 7 days before your gas certificate expires — for every property on your account. No relying on engineer reminders.
Certificate upload with OCR expiry reading
Upload your CP12 and LandlordAssist reads the inspection date automatically — so the expiry countdown starts without manual data entry.
Served-to-tenant confirmation log
When you provide the CP12 to a tenant, mark it as served in LandlordAssist. The date and method of service are logged — giving you a timestamped record that is instantly accessible if challenged.
S8 preflight check includes gas cert status
Before drafting any Section 8 notice, LandlordAssist checks that the gas certificate is current and that a copy has been served to the tenant. A lapsed cert blocks the notice until the prerequisite is resolved.