What is a CP1 certificate?
The CP1 is the Gas Safe commercial gas safety record documenting checks on non-domestic gas appliances, pipework and flues.
Gas Safe CP1
Commercial Gas Safety Record (CP1)
Fill it in on site, sign on screen, and send a professional CP1 PDF before you leave the job.
Free to build · Send it with a 7-day free trial
Need a CP1 for your own property? It's issued by the tradesperson who does the work — TradePlanr is the app they use.
The CP1 is the Gas Safe commercial gas safety record used to document checks on non-domestic and commercial gas installations. It confirms that appliances and pipework have been inspected and left in a safe condition.
It is used across offices, shops, industrial units and other commercial premises where a competent registered engineer has carried out a gas safety check.
TradePlanr lets you complete the CP1 on your phone, capture pressures and combustion readings on site, and issue a professional PDF to the responsible person straight away.
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What it covers
- Premises, responsible person and engineer details, with Gas Safe registration
- Each appliance inspected: make, model, type, location and burner details
- Inlet and operating pressures, and gas rate where applicable
- Combustion analysis readings for each appliance tested
- Flue integrity, ventilation and spillage checks
- Safety device operation, defects found and remedial action
- The standard satisfied: current commercial gas safety standards for the CP1 record
When it's required
A CP1 is issued when a Gas Safe registered engineer, qualified for commercial work, checks gas appliances in non-domestic premises. Businesses often arrange these checks to meet their duty to keep the workplace safe.
Employers and those in control of commercial premises have duties under health and safety law to ensure gas equipment is safe. A commercial gas safety record provides documented evidence that checks have been carried out.
The engineer must hold the relevant commercial gas qualifications and Gas Safe registration for the appliances being checked.
How to issue it in TradePlanr
- 1
Create the job
Open TradePlanr and start a job for the commercial premises, adding the responsible person and site details.
- 2
Pick the CP1 template
Select the CP1 commercial gas safety record template so the correct appliance and check fields are ready.
- 3
Record readings on site
Enter appliance details, inlet and operating pressures, combustion readings and flue and ventilation checks for each appliance.
- 4
Sign and send the PDF
Sign on screen and send or store the completed CP1 PDF for the responsible person's records.
Issue this certificate from your phone or the web
TradePlanr generates this and 79 other gas, electrical, oil, plumbing and renewables certificates as proper PDFs — filled on site, signed on screen and stored against the job. Works even with no signal. Free to start.
Frequently asked questions
Who can issue a CP1?
Only a Gas Safe registered engineer holding the relevant commercial gas qualifications may carry out and certify a CP1.
How often is a commercial gas safety check needed?
Commercial gas appliances are usually checked at least annually as part of a business's health and safety duties, following manufacturer and industry guidance.
Can I complete a CP1 on my phone?
Yes. TradePlanr lets you record the CP1 on site, sign on screen and send the PDF to the responsible person immediately.
Related certificates
Catering Appliance Safety Record (CP42)
The commercial catering gas safety record (CP42) for kitchens and catering appliances.
Landlord Gas Safety Record (CP12)
The annual landlord gas safety record (CP12) for rented properties — up to six appliances.
Strength, Tightness & Purge (IGEM/UP/1A)
The strength, tightness and purge record for larger and commercial gas pipework to IGEM/UP/1A.
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