There is nothing complicated about a Gas Safety Certificate. The complication is administrative — making sure the certificate is in date, the right engineer attended, and the tenant has a copy. Where branches fall over, it is almost always at one of those three points.
Diarise the renewal date, not the inspection date
A CP12 lasts twelve months from the date it is issued. Diarise the renewal six to eight weeks ahead so there is time to attend, fail, remediate and re-attend if needed.
Check the engineer’s registration
Only a Gas Safe registered engineer can issue the certificate, and the registration number should appear on it. A quick lookup on the Gas Safe register confirms the engineer is genuinely registered for the appliance type.
Get the certificate to the tenant in writing
The legal obligation is to provide a copy to the tenant. Email it, and keep the sent email on file. A certificate that sits in your branch and never reaches the tenant is, for compliance purposes, no certificate at all.
Done well, the whole process is a quiet thirty minutes a year. Done badly, it is the kind of admin failure that turns up at the worst possible moment.
