If you’re a landlord or property manager in the UK, you’ve likely encountered terms like Gas Safety Certificate and CP12 Certificate. These documents play a critical role in ensuring tenant safety and fulfilling legal obligations regarding gas appliances. But what’s the difference between the two, and why do they matter? Let’s break it down.
What is a Gas Safety Certificate?
A Gas Safety Certificate is an official document issued by a Gas Safe registered engineer following an inspection of gas appliances, fittings, and flues in a property. It certifies that all gas-related equipment is functioning safely and efficiently. This certificate is mandatory for landlords, as it assures that all gas appliances meet the required safety standards.
The Gas Safety (Installation and Use) Regulations 1998 require landlords to ensure annual gas safety checks and provide tenants with a copy of the certificate within 28 days of the inspection. It’s not just about safety; it’s about legal compliance.
What is a CP12 Certificate?
A CP12 Certificate is essentially another name for a Gas Safety Certificate, particularly in the context of rented properties. The term CP12 originated from “CORGI Proforma 12,” back when CORGI (Council for Registered Gas Installers) was the UK body responsible for gas safety until 2009. Since then, CORGI has been replaced by the Gas Safe Register, but the term CP12 is still widely used in the industry.
In short, a CP12 Certificate is just the old name for a Gas Safety Certificate, with both serving the same purpose: to verify that gas appliances and installations are safe.
What’s the difference between a Gas Safety Certificate and a CP12 Certificate?
While there is no significant difference in the function or purpose of these certificates, understanding the terminology is essential for compliance and communication within the property management and gas engineering sectors.
- Legal Requirement: Both documents are legally required for landlords in the UK to provide tenants annually.
- Inspection Process: The inspection carried out for either certificate is the same. A Gas Safe registered engineer will inspect gas appliances, flues, and pipes to ensure they meet safety standards.
- Terminology: The term Gas Safety Certificate is now the official name, while CP12 refers to the previous term used before 2009 under CORGI’s oversight.
Why is this important for landlords?
Landlords in the UK must prioritize tenant safety, and gas safety checks are a key aspect of this responsibility. Failure to obtain a Gas Safety Certificate can result in serious legal consequences, including hefty fines and potential criminal charges if an accident occurs due to negligence.
Key Points for Landlords:
- Annual gas safety checks are mandatory for all rental properties.
- A copy of the certificate must be provided to tenants within 28 days of the check.
- Keep detailed records of all gas safety checks for at least two years.
- Only a Gas Safe registered engineer can issue the certificate.
How to obtain a Gas Safety Certificate (CP12)?
Getting a Gas Safety Certificate involves a straightforward process:
- Book a Gas Safe Registered Engineer: Only professionals listed on the Gas Safe Register are authorized to perform gas safety checks.
- Schedule an annual inspection: This involves checking all gas appliances, such as boilers, stoves, and water heaters, as well as pipework and flues.
- Receive your Certificate: If everything passes inspection, you will be issued a Gas Safety Certificate. If issues are found, they must be addressed immediately to obtain the certificate.
Remember, Gas Safety is Non-Negotiable
Whether you call it a Gas Safety Certificate or a CP12 Certificate, the importance remains the same: keeping your tenants safe from gas-related hazards. The slight difference in terminology should not confuse landlords. Prioritise annual inspections and ensure compliance to avoid any legal repercussions.
Contact us today to book your Landlord Gas Safety Certificate with Marshall Gas.

