We're removing a small structural wall between our dining room and kitchen. A steel is going in but it's only about 2m wide. We've had a structural engineer round so we know it's the right size etc. The builder says not to bother with building control. I know you're meant to but in reality how many people do? He said he thought it would cost £400 for building control which is quite a lot. I think It would only be a problem if we sell our house one day and we get a particularly picky buyer/solicitor. What have other people done?