In England and Wales work carried out on a part of your property which adjoins your neighbours, must comply with the Party Wall Act 1996.
A party wall is any wall on the boundary line of two or more properties and includes garden walls as well as the walls of buildings, when you are carrying out work that will affect the structural strength or support function of the party wall or might cause damage to the neighbouring side of the wall you must officially (normally in writing) notify your affected neighbour.
The notice must be served at least two months before the intended start date of the work, giving details of the work to be carried out, But most importantly, no work may start until all neighbouring parties have agreed in writing to the notice.
The process is simple but is some cases you may need to seek advice from your building control office, a party wall surveyor or an architect
You could ask your Local Builders for advice




