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Guide to gas safety certificates

Everyone should have their gas appliances checked regularly to make sure they're safe. And if you're a landlord or tenant, you should also make sure you have a gas safety certificate. 

So what is a gas safety certificate, and why do you need one? Here's the lowdown. 

Everyone should have their gas appliances checked regularly to make sure they're safe. And if you're a landlord or tenant, you should also make sure you have a gas safety certificate. 

So what is a gas safety certificate, and why do you need one? Here's the lowdown. 

Sofia Hutson
Utilities expert
minute read
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Last Updated 25 MAY 2021

What is a gas safety certificate?

A gas safety certificate is what you're given when an engineer visits to check that your gas appliances are working safely and efficiently. It’s sometimes also called a gas safety record, landlord gas safety record or CP12. 
It’s vital that your gas appliances and pipes are safe. If they’re not, there’s a risk of gas leaks, explosions and carbon monoxide poisoning – all of which can be very serious and even fatal. 
A gas safety record is proof that you’ve had safety checks carried out. There isn’t a standard design for a gas safety certificate, so don’t worry if the document you receive looks different to one you’ve received from another firm. 

Who needs a gas safety certificate? 

If you're a landlord, it’s your responsibility to keep your property safe for tenants to live in. By law, you must have a gas safety check carried out by a Gas Safe registered engineer every year. When you receive your landlord gas safety record, you’ll need to make a copy available to your tenants.  
If you're a home-owner, you’re not legally bound to have a gas safety check, but it is a good idea to have an annual inspection of your boiler and other gas appliances. It’s also important to have a working carbon monoxide detector in your home. A detector or alarm can give peace of mind to those who live alone, and also to those that live with other people – you’ll know that they are safe. Ask your engineer to give you any documents that show you’ve had a gas safety check or gas work done.  
If you’re a tenant, your landlord must provide you with a copy of the property’s gas safety record (either paper or online) within 28 days of the check. So, if you haven’t seen it, ask your landlord or letting agent why. If you bring your own gas appliance, like an oven, you’ll need to get it checked out yourself. It’s not the landlord’s legal responsibility, although they are accountable for the pipework that supplies the appliance with gas. 

Read our guide to landlord and tenant responsibilities

What does a gas safety check involve? 

A qualified engineer will check all your gas appliances, including your boiler, oven, hob and fires (if you have them), as well as chimneys and flues. 
The engineer will check that an appliance is: 

  • on the right setting so the gas burns correctly 
  • suitable for the room it’s in 
  • stable, secure and safely connected to the property’s gas pipework 

They will also make sure there’s enough ventilation around the appliance and harmful gases are being removed safely to the air outside. 

What does a gas safety certificate show? 

Your certificate will tell you various things about your gas safety check, including:  

  • the address where the check took place 
  • the landlord or letting agent’s address 
  • which appliances were tested and where they’re located 
  • the date the check was carried out 
  • the results of the safety check 
  • any potential safety issues 
  • what, if anything, you need to do to make the appliance safe 
  • who performed the safety check 

How do I get a gas safety certificate?

You just need to request a safety check from a gas engineer. Make sure your engineer is Gas Safe registered, otherwise the certificate won’t be legal. If you’re in any doubt, check the Gas Safe Register. 

If you’re a landlord, you can get a gas safety check and annual boiler service by taking out landlord boiler cover.

How long does a gas safety certificate last?

Landlords will need to get a new one every year, so make sure you keep a record of when yours is due for renewal.  
Gas safety certificates need to be kept for two years, so even if yours is out of date, you should hold on to it just in case you need it. 
Some gas companies now keep the record online, but they must also give you a hard copy if you ask for one. 

How much does a gas safety certificate cost? 

Prices vary depending on where you live, who you go to, and how many appliances need to be checked. But you can expect a gas safety certificate to cost anything between £35 and £90.  
The cheapest way to get a gas safety certificate is by shopping around. It’s worth getting at least three quotes from reputable businesses so you can compare prices. Make sure you check exactly what’s included though – firms that advertise the lowest prices may not end up being the cheapest, once you’ve factored in hidden costs.  

Do I need to provide my tenants with any other certificates?

Yes, landlords now need an electrical safety certificate. Rules that came into force in June 2020 mean that electrical installations in private rented accommodation must be checked every five years. You’ll have to provide a copy of the electrical safety report to your tenants, as well as your local council if they ask for it. 
You’ll also need to provide an energy performance certificate, or EPC. You can only let out your property if it receives an EPC rating of E or higher.