We are coming towards the end of the build and we've just discovered that various building regulations have not been met. They will cost a lot to fix. Our builder is a rogue builder and refusing to do the rectifications. We suspect if we sued him he would just make the company go insolvent. Wondering if we have any other options? We have been using private building control but if we switched to the local authority building control could they somehow make the builder comply with the building regulations or at least put some pressure on him?