This part of the book has been designed to help you meet the requirements of the Building Regulations in dwelling houses, flats and rooms for residential purposes (hereafter referred to as dwellings). As a high percentage of the requirements, information and explanations about Building Regulations in dwellings is also applicable to buildings other than dwellings, rather than writing an additional subsection purely for ‘buildings other than dwellings’, we have included any differences that occur at the end of an associated subsection.