If you let a property in Cardiff, an annual gas safety check on every gas appliance is a legal requirement, and the resulting certificate (the CP12) is what proves it. It is not optional and the penalties for not having one are serious, so it is worth using an engineer who does it properly and gets the paperwork to you without chasing. LMB does exactly that, with 207 Google reviews at a straight 5.0.
What the check covers, and the homeowner version
The gas safety check covers every gas appliance and flue in the property, testing for safe operation, correct pressures, ventilation and the absence of dangerous faults. For landlords the certificate is issued on completion, and for portfolios the checks can be scheduled to keep every property compliant. Homeowners can have the same safety check for peace of mind, and it is often combined with a boiler service in one visit to save a trip.
Coverage runs across Cardiff and the Vale from a Pencoed base. As a Gas Safe registered business, any fault found can be put right by the same engineer rather than needing a second visit.



