Landlord gas safety check reminders: when to contact landlord customers
Last updated: 6 October 2026
What do landlords have to do?
Under the Gas Safety (Installation and Use) Regulations 1998, a landlord must arrange a gas safety check on each gas appliance and flue they provide, every 12 months. It must be done by a Gas Safe registered engineer, who issues a Landlord Gas Safety Record (often called a CP12).
What is the 10 to 12 month window?
Since the 2018 amendments, a landlord can have the check done between 10 and 12 months after the previous one, and the original expiry date stays the same. If it is done sooner than 10 months, or later than 12, the new deadline is 12 months from the date of the most recent check.
For you as the engineer, that means the best time to contact a landlord is around two months before the record expires. They then have a full two-month window to book without losing their date.
What happens after the check?
- The landlord must give each tenant a copy of the record within 28 days of the check, or give a new tenant a copy at the start of their tenancy.
- The landlord must keep the record for at least two years.
Many landlords are not sure of these details, so a clear reminder from you is useful to them as well as good for your diary.
Is a gas safety check the same as a boiler service?
No. A landlord's gas safety check is a legal safety inspection of gas appliances and flues. A boiler service is maintenance of the boiler itself. They are often done together on the same visit, but they are different things, and a service does not replace the safety check. Make sure your reminder says which one you are offering.
Set the date when you finish the job
Record the expiry date of the safety record when you issue it, then plan to contact the landlord two months ahead. See how to keep track of annual boiler services for a simple way to do that, and the rules on texting customers before you send anything.
These rules apply to rented homes in Great Britain. Check the Gas Safe Register or the Health and Safety Executive for the latest requirements and for the position in Northern Ireland. This is general information, not legal advice.
Sources
- Gas Safe Register: Landlord gas safety responsibilities
- Propertymark: Gas safety checks for private landlords
- Shelter England: Gas safety in rented homes