Gas Safety Certificate requirements and renewal dates: what to track

Any rented property with gas appliances, fittings or flues that the landlord provides needs an annual gas safety check by a Gas Safe registered engineer, under the Gas Safety (Installation and Use) Regulations 1998. The record the engineer leaves, usually called a CP12, is the document everyone asks for. Most problems come from the dates around it rather than the check itself. The HSE guidance for landlords is the authoritative reference.

A landlord’s gas safety obligations in brief

• Have every gas appliance, fitting and flue you provide checked by a Gas Safe registered engineer every twelve months.
• Keep them maintained in a safe condition between checks.
• Give existing tenants a copy of the record within 28 days of the check, and new tenants a copy before they move in.
• Keep the records (details below), and be able to show the attempts you made if a tenant refused access.

The dates to track for every property

• Check date. The day the engineer carried out the check. Everything else counts from here.
• Expiry date. Twelve months from the check date, or the preserved date if you used the early-renewal window (below).
• Copy to existing tenants. Within 28 days of the check.
• Copy to new tenants. Before they move in.
• Retention. Keep each record until two further checks have been made, or for two years after the last check if the appliance is removed.

The early-renewal rule

Since 2018 a check carried out in the two months before the expiry date can keep the original expiry date, so the renewal does not creep earlier every year. In practice that means you can book engineers in a sensible window rather than on the exact anniversary. Record the preserved expiry date, not the new check date, or the next reminder will be a month wrong. Two details from the HSE's page on records are easy to miss: a record produced under this rule has to be kept until two further checks have been done, not just two years, and it is for you to show the checks fell inside the window, so file the previous record alongside the new one.

Is there a grace period? What happens when it expires

There is no grace period after the expiry date; the two-month window above is before it. The regulations require a check within twelve months of the last one, so the day after the expiry date the property is without a valid check, and that is a breach of the Gas Safety (Installation and Use) Regulations 1998 whether or not anything is wrong with the appliances. Enforcement is by the HSE and is criminal from the start: prosecution can bring an unlimited fine, and imprisonment is possible (the figures for every obligation are on the penalties page). Three practical consequences follow.

• You cannot start a new tenancy on it. A new tenant must be given a current record before they move in, and a record is current for twelve months from its check date. An expired one does not count.
• The late check does not preserve the old date. The two-month rule only applies to a check done before the deadline. A check done after it starts a new twelve-month clock from the new check date, so update the expiry date rather than assuming the anniversary still holds.
• Book it today and write down why it was late. If the delay was a tenant refusing access, the record of your attempts (below) is what stands between a missed date and a prosecution. If it was simply missed, the honest record is the date it was noticed and the date the engineer came.

When the tenant will not let the engineer in

A landlord is expected to take “all reasonable steps” to get the check done, and the HSE says what it looks for: a notice left at the property saying an attempt was made, with your contact details; a letter explaining that the check is a legal requirement and is for the tenant's own safety; repeated attempts, appropriate to the circumstances; and a record of every piece of correspondence. Force must never be used to enter. Keep the letters, the dates of the visits and the tenant's replies with the property's record, because an inspector asks for exactly that.

A checklist you can run monthly

1. List every property with a gas supply, including ones where the boiler is the only appliance.
2. Confirm each has a current record on file, with the expiry date written down, not assumed.
3. Flag anything expiring in the next 60 days and book the engineer inside the early-renewal window.
4. When the new record arrives, file it against the property and send the tenant their copy the same day.
5. Note where access was refused, with the evidence of attempts described above.
6. Check the date with the certificate expiry checker if a record has an unusual check date; it applies the twelve-month rule for you.

Where agencies slip

The same patterns come up repeatedly: a spreadsheet column holding the check date instead of the expiry date, a record filed in an inbox rather than against the property, and a tenant copy that never gets sent because nobody owned that step. Each is cheap to fix once the certificate, its expiry date and the follow-up all live in one place.

In Verixad a gas safety certificate is uploaded against its property with an expiry date, and its status (valid, expiring, expired or missing) follows from that date. Expiring certificates appear on the dashboard and in the morning reminder, and the compliance timeline shows the next 90 days lane by lane, for an agency’s portfolio or a landlord’s own homes. See how documents and compliance work. Gas is one lane of several. The full picture is in what certificates a UK rental property needs, and the cost of letting any of them lapse is in landlord fines and penalties in England.