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Landlord gas safety certificates (CP12): a guide for Leeds landlords

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Landlord gas safety certificates (CP12): a guide for Leeds landlords

By Steve, Director at White Rose · 15 October 2026 · 3 min read

Advice · Landlords

If you rent out a home in Leeds with gas appliances, you must have a gas safety check every year and give your tenants a copy of the record. This guide explains what’s required, in plain English.

What is a CP12?

“CP12” is the common name for a landlord gas safety record. It shows that a Gas Safe registered engineer has checked every gas appliance, flue and fitting in the property and that they are safe to use. The name comes from the old CORGI form, but most people still use it.

What the law requires

Under the Gas Safety (Installation and Use) Regulations 1998, landlords must:

  • Have every gas appliance and flue they provide checked every 12 months by a Gas Safe registered engineer
  • Give existing tenants a copy of the record within 28 days of the check
  • Give new tenants a copy before they move in
  • Keep each record for at least two years
  • Make sure appliances are maintained in a safe condition

Failing to comply is a criminal offence and can lead to heavy fines or prison. It can also affect your insurance, and in England it can stop you serving a valid section 21 notice.

Can I renew early without losing time?

Yes. You can have the check done up to two months before the current record expires and keep the original expiry date, so you don’t lose any time.

What is checked?

  • Gas tightness of the installation
  • Burner pressure or gas rate against the manufacturer’s data
  • Ventilation is adequate
  • Flues are safe and working correctly
  • Safety devices are working
  • Any appliance that is unsafe is identified and dealt with

Carbon monoxide alarms

Since 1 October 2022, landlords in England must fit a carbon monoxide alarm in any room used as living accommodation that has a fixed combustion appliance, such as a gas boiler or gas fire (gas cookers are not included). Alarms must be repaired or replaced once you are told they are faulty. We can supply and fit alarms during your gas safety check.

How much does a CP12 cost in Leeds?

Our landlord gas safety certificate costs £72 including VAT. You can book online, and we can arrange access with your tenants and email the certificate to you and your letting agent.

Frequently asked questions

What if an appliance fails the check?

We will explain the problem and make the appliance safe. If it is dangerous, we will isolate it with your permission and quote for the repair.

Do you work with letting agents?

Yes. We work with letting agents and landlords with large portfolios across Leeds.

Do HMOs need anything different?

HMOs have the same gas safety duties plus local licensing conditions. We carry out checks in shared houses across Headingley, Hyde Park, Kirkstall and the rest of Leeds.

This guide is general information, not legal advice. For full details see the Health and Safety Executive’s guidance for landlords.

More advice

Need a gas safety certificate?

Book online or call 0113 532 7670.

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