If you mean to do any kind of structure job near or on an event wall, a party wall arrangement is required. You should notify your neighbours, offer them with a Party Wall Notification, and draught a composed Party Wall Agreement.
IS THE PARTY WALL MINE?
A "party wall" is one that runs along the border of land possessed by two (or even more) various individuals. A wall surface of this kind is either a part of one structure, separates two (or more) structures, or is a "party fence wall surface."
WHAT IF WE CAN'T AGREE?
If neighbours are unable to reach an arrangement, a Party Wall Property surveyor need to be commissioned to settle the disagreement by preparing a Party Wall. The surveyor works as an affiliate between the parties and will lay out the specifics of the job.