Gas Safety Verification
How to Check a Landlord Gas Safety Record and Verify an Engineer
For a London rental, check the business and attending engineer on the Gas Safe Register, then compare the landlord gas safety record with the property, appliances and inspection details. The Register verifies registration; it is not a public CP12 database. Landlords, agents and tenants need to examine the document separately because a registration match does not establish that a particular inspection happened.
Landlord Gas Safety Guides / Check a Gas Safety Record
Immediate safety concern: if you smell gas, leave and call the National Gas Emergency Service on 0800 111 999 from a safe place. For suspected carbon monoxide symptoms, get into fresh air and call NHS 111, or 999 if symptoms are serious.
Have your postcode, the gas appliances you provide and your current certificate's expiry date ready.
- Gas Safe registered: 648977
- Every landlord gas appliance checked
- Same-day appointments available
The Legal Duty Behind the Record You Are Checking
Regulation 36 of the Gas Safety (Installation and Use) Regulations 1998 requires landlords in England to arrange annual safety checks of the gas appliances and flues they provide, using a suitably qualified Gas Safe registered engineer.
If a current inspection is needed, see our landlord gas safety checks in London.
Arrange
include every landlord-provided gas appliance and its flue. Tenant-owned appliances fall outside this annual-check duty, although associated landlord responsibilities still need consideration.
Provide
give existing tenants their record within 28 days of the check and new tenants a copy before they move in.
Retain
keep the record until two further checks of the appliance or flue have taken place. For removed items, retain it for two years from the last check.
Five Checks to Make Before Relying on a Gas Safety Record
Five checks connect the business, attending engineer and property record, but no single check proves that all inspection work occurred. CP12 is the common name for the Landlord Gas Safety Record; see what a landlord gas safety record contains before comparing its details.
Business registration
compare the supplied business name and registration number with the official Register entry. Ask the Register to clarify an unexplained mismatch.
Attending engineer
compare the person with their Gas Safe ID photograph, name and validity dates. Use their licence number to check the official entry; resolve differences before work begins.
Relevant qualifications
compare the engineer’s current work categories with every landlord-provided appliance. Ask the business about missing or unclear coverage.
Property and appliances
compare the address, flat number and appliance locations with the rental. Ask the issuer to explain omissions or incorrect details.
Date and findings
compare the inspection date with your records and read defects and actions recorded. Request clarification from the issuer where information is unclear.
A successful registration lookup is not online approval of a CP12.
Check the Business Behind the Booking
Compare the business’s supplied registration details with its official Gas Safe Register entry before relying on its booking confirmation.
Match the Attending Engineer to Their Gas Safe ID
Check the attending engineer’s own Gas Safe ID before gas work begins, even when you have already checked the business.
- Compare the person at the property with the ID photograph.
- Read the name and validity dates on their physical or official digital ID.
- Use their licence number in the Register’s engineer-check service.
- Compare the returned identity and qualifications with the ID and planned work.
Repeat these checks if a different engineer attends. A card image sent beforehand does not establish who has arrived. Present-day registration also does not conclusively establish registration on an earlier inspection date; ask the Register to clarify historical concerns.
Match the Engineer’s Categories to Every Landlord Appliance
Registration must be checked alongside the categories of gas work the engineer is qualified to undertake.
Compare the card and official entry with your appliance inventory:
- Boiler and associated flue.
- Cooker, hob or range cooker.
- Gas fire and associated flue.
- Water heater or other landlord-provided gas appliance.
Ask the business to resolve any unclear or missing category before work starts. Boiler qualifications do not automatically cover other appliances. Likewise, a record listing only the boiler does not account for a landlord-provided cooker or gas fire elsewhere in the property.
- Obtain the details: ask for the business name and Gas Safe business registration number.
- Check the Register: use its business-check facility to look up those details.
- Compare identities: check that the returned business matches the organisation taking responsibility for the work.
- Resolve differences: clarify unexplained trading names or unsuccessful searches with the Register.
A logo, advert or company incorporation does not establish Gas Safe registration. An unsuccessful search alone does not prove fraud.
Apply the same scrutiny to All Service 4 U, business registration 648977. See our Gas Safe registration details. A business registration number identifies the organisation; an engineer’s licence identifies the individual.
Audit the Record Against the Property and Inspection
Compare the record with the actual property and inspection, rather than judging its appearance. Regulation 36 requires specific particulars; a polished layout, serial number or printed renewal date cannot replace them.
Apply the Same Checks to an Emailed or Digital Record
A digital record can be acceptable, but its file format does not establish authenticity or completeness. Apply the same identity, property, appliance and findings checks.
- Keep an electronic record that can be reproduced on paper and is protected against loss or interference.
- Check that it identifies the inspecting engineer; an electronic signature is not invalid merely because it is not handwritten.
- Confirm tenants can access and are willing to receive an electronic copy. Supply paper if requested.
Keep the original file and ask the issuer about unexplained changes. Do not amend the certificate yourself.
- Appliances and flues: check descriptions and locations against the property. Is every landlord-provided appliance accounted for? Query unexplained exclusions.
- Inspecting individual: check the engineer’s name, registration number and signature. Compare these with the person who attended, where known.
- Inspection date: compare the date with the appointment and previous records. A qualifying early check may preserve an existing deadline.
- Property address: confirm the full address and correct flat or unit. A shared building address alone may leave the inspected property unclear.
- Landlord or agent: check that the appropriate name and address are recorded accurately.
- Defects and action: read any safety-related defects and remedial action recorded. Do not assume a blank or unclear entry means a known issue has been resolved.
- Required safety checks: look for confirmation of the matters in regulation 26(9)(a)–(d): flue effectiveness, combustion air, operating pressure or heat input, and safe operation.
Ask the issuing business to explain missing entries or discrepancies. A record documents findings, including defects; it is not simply a pass certificate. Unresolved warnings require attention even where the document’s identity and property details match.
Resolve Missing Details, Mismatches and Registration Concerns
Resolve paperwork discrepancies with the issuer and registration concerns with the Gas Safe Register, but address any immediate danger first.
Missing or incorrect details
retain the original and ask the issuing business for an explanation or corrected record. Tenants should request their copy through the landlord or agent.
Unresolved registration or unsafe-work concerns
refer these to the Gas Safe Register with the record and relevant correspondence.
Landlord has not provided a record
request it in writing, then use the appropriate HSE reporting route if unresolved. Missing paperwork alone does not establish whether a check occurred.
If you smell gas, leave and call the National Gas Emergency Service on 0800 111 999 from a safe place. Treat a sounding carbon monoxide alarm as real: move outside and seek urgent assistance. For suspected carbon monoxide symptoms, get fresh air and call NHS 111, or 999 for serious symptoms. Do not delay for paperwork checks.
Landlords must arrange necessary remedial work with a Gas Safe registered engineer. A new check cannot retrospectively prove an earlier inspection happened.
Landlord gas safety certificates
Arrange a Landlord Gas Safety Check in London
If you need a current landlord gas safety check in London, discuss the property, appliances and access arrangements with our team.
All Service 4 U uses Gas Safe registered engineers. Same-day gas safety check appointments are available, subject to availability. Our phone line is open 24 hours a day, 7 days a week.
Have the postcode, landlord-provided appliance list, existing record date and tenant-access details ready. A current inspection does not replace missing historical or installation evidence.
Discuss a Landlord Gas Safety Check: 020 3740 6785
020 3740 6785
Frequently Asked Questions
Can You Check a Gas Safety Certificate Online?
You can check registration online through the Gas Safe Register, but it does not provide a public database of landlord CP12 records. Obtain the particular document from the landlord or issuer and compare its details with the property and inspection. An installation’s Building Regulations certificate is a different document and does not replace the landlord gas safety record.
Is a Boiler Service the Same as a Gas Safety Certificate?
No. A boiler service and a landlord gas safety check are different activities. Servicing involves maintenance following the manufacturer’s schedule, while the landlord check addresses the safety of landlord-provided gas appliances and flues. Identify which work your paperwork records: neither activity automatically includes the other, and a boiler service record alone does not replace the CP12.
Can I Get the CP12 and Boiler Service Done in One Visit?
Yes, both activities can be arranged in one visit, while remaining separate jobs. Confirm that the booking includes the landlord gas safety check and the boiler service, with every relevant landlord appliance included in the inspection scope. Ask what documentation will be supplied for each activity; sharing an appointment does not make the records interchangeable.
How Often Is a CP12 Needed, and Can the Check Be Done Early?
Landlord gas safety checks are annual, and a qualifying early check can preserve the existing deadline. Regulation 36A allows this within the two months before that deadline, subject to its conditions. Retain evidence of the previous deadline rather than assuming every renewal runs from the latest inspection date. This flexibility is not a grace period after the deadline.
What Does an Unsafe or “Condemned” Appliance Entry Mean?
An unsafe finding can appear on the issued inspection record; it does not invalidate the record, which should not be withheld pending remedial work.
- Immediately Dangerous: an immediate danger; the engineer seeks permission to disconnect.
- At Risk: recognised faults could constitute danger; the engineer seeks permission to turn it off.
Follow warning labels and the engineer’s instructions. The landlord must arrange remedial work with a Gas Safe registered engineer. Follow the immediate safety advice above if gas or carbon monoxide is suspected.
Still have a question or need urgent assistance? Call 020 3740 6785, tell us what has happened and we will tell you what happens next.