The Value of a Gas Safety Certificate For Landlords and Letting Representatives Gas safety checks are vital for any landlord or letting agent. They make sure that all gas home appliances are safe to use and that a CP12 has actually been issued. It is a legal requirement for landlords to have a gas safety check brought out every year. This is generally evidenced by a CP12. It likewise helps to avoid carbon monoxide gas poisoning, which can be fatal within hours. What is a Gas Sa