Landlord Gas Safety Certificate (CP12)
A Landlord Gas Safety Certificate (CP12) is the legally required annual check for rented properties with gas appliances. The inspection confirms that appliances, pipework and flues are operating safely and allows you to provide tenants with the correct certification and clear records for compliance.
More information
What the CP12 service covers
A CP12 visit is a structured safety inspection and set of tests carried out by a Gas Safe registered engineer. It is designed to confirm safe operation and identify risks early.
- Inspection of gas appliances (where fitted) for safe operation and correct set-up
- Checks of flues, ventilation and signs of unsafe combustion
- Gas tightness testing and visual checks of accessible pipework
- Safety device and controls checks
- Readings and test results recorded in line with current requirements
- Issue of the Landlord Gas Safety Record (CP12) for your compliance file
When this service is most useful
- Annual renewal of your landlord gas safety certificate before it expires
- New tenancies, where you need up-to-date paperwork ready for move-in
- Managing multiple properties and needing consistent records and reminders
- When you have concerns about smells, sooting, pilot issues, or poor appliance performance
What happens on the day
The engineer will confirm which appliances are included, carry out the required safety checks and tests, and record the results. You will be told clearly what passed, what needs attention, and whether any immediate safety steps are required. The goal is a compliant certificate backed by proper testing, not just a quick tick-box visit.
If issues are found
If an appliance or installation does not meet safety requirements, it may be classed as At Risk or Immediately Dangerous. You will be informed on the spot, with a clear explanation of what the classification means and what needs to be put right. Where appropriate, remedial work can be quoted or arranged so you can regain compliance quickly.
After the inspection
You receive the CP12 record for your files and to provide to tenants within the required timeframe. Keep it with any related service records so you have a clear compliance trail for audits, insurance queries, or tenancy discussions.
Frequently Asked Questions
How often do I need a landlord gas safety certificate?
What appliances are included in a CP12 inspection?
Do I need to be at the property during the inspection?
What happens if the property fails the gas safety check?
When will I receive the CP12 certificate?
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