Who can issue a domestic gas safety certificate?
Only a Gas Safe registered engineer can legally work on and certify domestic gas appliances and pipework. The certificate records their registration details.
Gas Safety (Installation & Use) Regs
Domestic Gas Safety Certificate
Fill it in on site, sign on screen, and send a professional Domestic PDF before you leave the job.
Free to build · Send it with a 7-day free trial
Need a Domestic for your own property? It's issued by the tradesperson who does the work — TradePlanr is the app they use.
If you're a Gas Safe registered engineer, TradePlanr lets you issue a domestic gas safety certificate from your phone while you're still at the property — appliances, readings, flue checks and signatures, finished and sent as a professional PDF before you're back in the van.
The certificate records the checks carried out on gas appliances and their associated pipework and flues in a home, giving the householder written evidence that appliances have been tested and left in a safe condition. The checks reflect the duties set out in the Gas Safety (Installation and Use) Regulations 1998, which require gas work to be carried out safely by a competent registered engineer.
Every certificate you issue is stored against the job and the customer, so next year's service reminder, the repeat certificate and the invoice are all two taps away.
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What it covers
- Property and customer details, plus the Gas Safe engineer and registration number
- Each appliance checked: make, model, type and location
- Operating pressure and gas rate where applicable
- Combustion analysis readings (CO and CO2 ratio) where the appliance can be tested
- Flue and ventilation checks, including flue flow and spillage tests
- Safety device operation and whether each appliance is safe to use
- The standard satisfied: Gas Safety (Installation and Use) Regulations 1998 and current gas safety guidance
When it's required
A domestic gas safety check is good practice whenever gas appliances are installed, serviced or need reassurance that they are operating safely. Many homeowners request one after buying a property or when they suspect a fault.
The work must be carried out by a Gas Safe registered engineer. Only a registered engineer may legally work on gas appliances and pipework, and the certificate should record that engineer's registration details.
While an annual check is a legal duty for landlords, homeowners are not legally required to hold a certificate. Regular checks are strongly recommended to keep appliances safe and efficient.
How to issue it in TradePlanr
- 1
Create the job
Open TradePlanr and start a job for the property, adding the customer and address details.
- 2
Pick the gas safety template
Select the domestic gas safety certificate template so the correct appliance and check fields are ready to complete.
- 3
Record checks on site
Enter each appliance, operating pressure, combustion readings, flue and ventilation checks and confirm the safety device results as you work.
- 4
Sign and send the PDF
Sign on screen, have the customer sign if present, then send or store the finished PDF instantly.
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
How long is a domestic gas safety certificate valid?
There is no fixed legal expiry for a homeowner's check, but an annual gas safety check is widely recommended to keep appliances safe.
Is a gas safety certificate a legal requirement for homeowners?
No. Homeowners are not legally required to hold one, but landlords must arrange an annual check under the Gas Safety (Installation and Use) Regulations 1998.
Can I issue a gas safety certificate from my phone?
Yes. With TradePlanr you complete the record on site, sign on screen and send the customer a PDF without paper forms.
What is the difference between a domestic gas safety certificate and a CP12?
A CP12 is the landlord gas safety record — the annual check landlords are legally required to arrange for rented properties. A domestic gas safety certificate covers the same kind of appliance checks for homeowners, where the check is recommended rather than legally required. TradePlanr has separate templates for both.
Can I record a boiler service on the same visit?
Use the gas service and maintenance record alongside the safety certificate — both templates share the job and customer details in TradePlanr, so you enter the property information once and issue both PDFs from the same visit.
Related certificates
Landlord Gas Safety Record (CP12)
The annual landlord gas safety record (CP12) for rented properties — up to six appliances.
Gas Service & Maintenance Record
The service and maintenance record issued when a gas appliance is serviced.
Gas Tightness (Soundness) Test Certificate
The let-by and tightness test record for domestic gas installations to IGEM/UP/1B.
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