I'm in the process of buying a flat. The boiler is 5 years old but was installed by a 'friend of a friend' and was not registered with Gas Safe.
I've asked for it to be registered, re-commissioned or reduction in price so I can get a new one. The vendor is proposing indemnity insurance (which helps if the council ask to remove the boiler) and a Landlord's Gas Safety Certificate (CP12). However, I am not happy with this as I don't feel it will guarantee the safety of the installation and could be an issue when I sell in future. Any experience of this please?