When it comes time to extend or alter a business premises or family home you need to be sure that you are doing everything by the book. If you are engaged in a construction project that will affect a shared wall, then it is prudent to engage a professional party wall surveyor or land surveyor to ensure that you are following the letter of the law. David Smith Associates provides party wall surveying services for both commercial and residential clients. Our main offices are based in Northampton, Cirencester, London & Birmingham and our surveyors can operate throughout the country.