Gas Safety Certificate: What Every Landlord Needs to Know

A gas safety certificate is a signed record of your gas safety check. The engineer inspects every gas appliance, pipe, and flue in the property. The certificate confirms each item is safe at the time of the visit. Gas problems are hard to see. A faulty boiler leaks carbon monoxide. You cannot smell it or see it. A yearly check finds faults before they hurt your tenants.

Is a CP12 the same as a Gas Safety Certificate?

Yes. CP12 is the everyday name for the Landlord Gas Safety Record. Engineers, letting agents and councils use both terms for the same document.

Who Needs a Gas Safety Certificate?

You need one if you rent out a property with any gas appliance, gas pipework or flue. This covers houses, flats and rooms in shared homes. The rules apply in England, Scotland and Wales.

• Private landlords need one for each rented property
• Letting agents need one for each property they manage
• Commercial landlords need gas checks for rented business premises

Nationwide Surveyors books gas safety certificates for domestic and commercial properties. Homeowners who live in their property do not need one by law. Many book a check anyway for peace of mind or before a sale.

You need a new gas safety certificate every 12 months. Do not let it expire. A lapsed certificate means you break the law.

The two-month early check rule:

You book your check up to 2 months before the expiry date. You keep your original renewal date.

Example:

• Your certificate expires on 31 January
• You book the check any day from 1 December to 31 January
• Your new certificate runs until 31 January the following year

Set a reminder 3 months before expiry. This gives you time to find an engineer and fix any faults.

A Gas Safe registered engineer visits your property and tests every gas item. The visit covers:

• Boilers, gas hobs, gas fires and other gas appliances you supply
• Pipework for gas leaks
• Flues and chimneys for safe airflow
• Safety devices to confirm they switch off correctly
• Gas pressure and burner performance
• Ventilation in the room

The engineer records each result on your CP12 certificate.

Gas safety check or boiler service?

They are different jobs. A gas safety check is a legal safety inspection. A boiler service keeps your boiler efficient and extends its life. The law requires the check every year. Landlords also keep appliances in good working order, so book both when your boiler is due.

Follow these steps within days of the visit.

1. Check that the certificate lists every gas appliance in the property
2. Give existing tenants a copy within 28 days
3. Give new tenants a copy before they move in
4. Keep your copy for at least 2 years
5. Note the next due date in your calendar

Tenants have the right to ask for the current certificate at any time. Store a digital copy so you send it in minutes.

The engineer marks unsafe items on the certificate. In serious cases, the engineer shuts off the appliance straight away. You then repair or replace it and arrange a recheck. Do not let tenants use an appliance marked unsafe.

Penalties for Missing a Gas Safety Certificate

Failing your gas safety duties is a criminal offence. The HSE enforces the rules. Penalties include fines and, in serious cases, prison.

The problems go further than the law:

• Your landlord insurance often requires a valid certificate
• Your tenants face real danger from carbon monoxide
• You lose the trust of good tenants

The price depends on four things:

• The number of gas appliances
• The property location
• The property type
• How fast you need the visit

Nationwide Surveyors gives you an [instant quote in 30 seconds]. Bundle your gas check with other certificates to save money. Bundles including a Gas Safety Certificate start from £199. Bundle Three covers EICR, PAT and Gas Safety. Bundle Four covers EICR, EPC and Gas Safety. Check the Our Services page for the full list.

Does a landlord need a gas safety certificate every year?

Yes. You renew it every 12 months. Book up to 2 months early and keep your renewal date.

How long do I keep old gas safety certificates?

Keep them for at least 2 years. Some landlords keep them longer as proof of compliance.

Do I give my tenant a copy of the certificate?

Yes. Existing tenants get a copy within 28 days of the check. New tenants get one before they move in.

Is a gas safety certificate the same as a boiler service?

No. The certificate confirms safety. A boiler service maintains performance.

Do I need a gas safety certificate if the property has no gas?

No. A property with no gas supply and no gas appliances does not need one. Keep proof of this for your records.

What if my tenant refuses access for the check?

Keep a written record of each attempt to book the visit. Send letters or emails and note the dates. Ask the HSE or a housing adviser if access stays blocked.