It might be possible to have it inspected by building reg's and have it certified retrospectively? Although how they do that with everything been plastered over and hidden I don't know. Might be worth trying to get any engineering dwg's and calcs too.
As far as I understand it, indemnity insurance only covers you if the council decides to come after you, of which the probability is slim to none. It won't cover you if for whatever reason you find out the house is not up to scratch and needs work.
It might be possible to have it inspected by building reg's and have it certified retrospectively? Although how they do that with everything been plastered over and hidden I don't know. Might be worth trying to get any engineering dwg's and calcs too.
As far as I understand it, indemnity insurance only covers you if the council decides to come after you, of which the probability is slim to none. It won't cover you if for whatever reason you find out the house is not up to scratch and needs work.