As that house sale is progressing I now realise that I've had two lots of work done on my new home, and in neither case did anyone mention Building Regs:
1) In an attempt to make more space in the attic a previous owner had removed the brick supports to the purlins resulting in a sag in the roof.
I got structural engineers to design a correction and used builder they recommended to implement it. Not a word about Building Regs.
2) In knocking one room into another a previous owner had left an arch as it was at the centre of the house where the ceiling joists were supported. The last owner didn't like the arch so they removed it.
The roofer who re-felted my flat roof said he would fix it, nice big wooden beam locked either end into the brickwork, neatly plaster boarded. Not a word about Building Regs.
I don't want a repeat of the hassle if this house is sold though the modern day solution seems to be to buy Indemnity Insurance.
Or should I just bite the bullet and ring the Council?