What is Gas Safety Certificate (CP12)?

A Gas Safety Certificate, often called a CP12, is an annual safety inspection record required by law for all rented residential properties in the UK. It must be carried out by a Gas Safe registered engineer, who checks all gas appliances, pipework and flues in the property. Landlords must provide a copy to existing tenants within 28 days of the check and to new tenants before they move in. The record must be retained for at least two years. Failure to obtain a valid gas safety certificate is a criminal offence and can also invalidate the ability to serve a valid Section 21 notice.