The Party Wall Act governs building works in relation to site boundaries: what you are allowed to do with a shared wall, and how foundations should be constructed when close to a boundary.  You will need to reach an agreement with any neighbours, typically in the form of a Party Wall Award, prior to undertaking any works.

We recommend that the Party Wall Award is drawn up by a party wall surveyor:

We can:

• advise on whether the Party Wall Act applies
• assist in the selection and appointment of a party wall surveyor
• provide information to assist the party wall surveyor in drawing up the Party Wall Award