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Gas Safety Certificate

What Does a Gas Safety Certificate (CP12) Include?

The checks and information normally recorded on a landlord gas safety record, and how customers should read the completed document.

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What Does a Gas Safety Certificate (CP12) Include? – CertifyEPC property guidanceUK-focused guidance · Gas Safety Certificate

The checks and information normally recorded on a landlord gas safety record, and how customers should read the completed document. This guide is written for practical decision-making and links to the sources used for verification.

The record identifies property, engineer and appliances

A landlord gas safety record normally identifies the property, landlord or agent, registered engineer, date of check, and each appliance or flue examined. It records the safety checks completed and any defects or remedial action.

CP12 is a widely used industry name, but the important point is that the document contains the legally required gas safety record information.

Checks focus on safe operation

The engineer checks matters such as gas tightness, operating pressure or heat input where appropriate, safety devices, flue flow, ventilation and evidence of unsafe combustion. The exact checks depend on the appliance and installation.

A safety check is not permission to ignore a warning label or defect. Follow the engineer’s instructions and do not use an appliance classified as unsafe.

Review the record before filing it

Check the address, appliance list, engineer details, results and next due date. Ask promptly if an appliance expected to be included is missing or the access limitation is unclear.

Give the tenant their copy within the required period and retain the landlord copy. Store supporting repair invoices and warning notices with the record.

  • Correct property and landlord details
  • Gas Safe engineer identity and registration
  • Appliance and flue locations
  • Safety-check results and defects
  • Check date and signatures

Research and verification

Authoritative sources

Use these primary and specialist sources to check the current rule and read further.

CE
CertifyEPC Editorial Team

UK property certificate research and customer guidance. Reviewed on 30 July 2026. Information is general guidance, not legal or engineering advice.

Requirements can change and unusual properties may need specialist advice. Check the latest official source and the facts of the property before relying on a compliance conclusion.

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