I am currently having some repairs done to back wall of my house which is timber framed and rendered. - the builder is splicing in seasoned oak to rotten posts and repairing sill plate where necessary so I was feeling please with myself for getting a proper job done. It did not occur to be that I would need building control to approve these repairs until someone mentioned it to me yesterday. Is this right? The work is not yet finished so should I get building control in now? Does anyone know what they are likely to make me do??