What is a party wall agreement?
A party wall is a shared wall between neighbouring houses, usually in a semi-detached or terraced house. It is the wall that divides both houses. A party wall agreement is needed for any building work that involves insertion of damp proof courses, loft conversions and digging new foundations.
You need a written party wall agreement signed by adjoining owners. A surveyor is appointed to prepare a Party Wall Award that states how work will progress. The adjoining homeowners have to be given two months written notice.