Before you decide to extend your home, it’s important to check that the new build will comply with the regulations and guidelines. The main legislation governing house extensions is the Building Regulations. These are also known as Approved Documents and are different for each region of the UK. Scotland has its own Technical Handbook for Domestic Projects, while Northern Ireland issues its own technical booklets. However, the guidance issued for the whole UK is similar. If your chosen builder is competent, there should be no issues.