Of all the landlord safety duties, gas is the one that carries criminal liability. There is no civil-penalty soft option and no benefit of the doubt — a lapsed gas certificate is a serious matter, so it pays to understand it precisely.
What the law requires
- An annual gas safety check on every gas appliance, pipe and flue, by a Gas Safe registered engineer.
- A Gas Safety Record (the CP12) issued after each check.
- Give the record to existing tenants within 28 days, and to new tenants before they move in.
- Keep records for at least two years.
The penalties
Letting a property without a valid certificate is a criminal offence carrying an unlimited fine and, in the worst cases, imprisonment. If a tenant is harmed by an unsafe appliance you may also be liable for the consequences. This is the duty to never let slip.
Practical tips
- 1Book the renewal early — you can have the check done up to two months before expiry without losing your original anniversary date.
- 2Use the same engineer across your portfolio to simplify scheduling.
- 3Serve the certificate to tenants in a way you can prove (email with a timestamp is fine).
- 4Never confuse a boiler service with a gas safety check — they are different things.
How Rentwire helps
Gas certificates are pure calendar risk: one missed renewal turns a £60–£90 check into a criminal offence. Rentwire stores each property's gas expiry date and warns you well before it lapses — so "what gas certs are due in the next 60 days?" is a one-line question, not a portfolio-wide panic.
Frequently asked questions
- How often does a landlord gas safety certificate need renewing?
- Every 12 months, by a Gas Safe registered engineer. You can have the check done up to two months before the current certificate expires without shifting your renewal date.
- What's the penalty for letting without a gas safety certificate?
- It is a criminal offence carrying an unlimited fine and potential imprisonment, plus liability if a tenant is harmed. There is no civil-penalty alternative.
This article is general information for UK landlords and letting agents, not legal, tax or financial advice. Rules change and individual circumstances differ — check the latest guidance from GOV.UK or a qualified professional before acting.