If you plan to demolish a building, or part of a building then you must provide us with a demolition notice at least six weeks before you do so. The Building Act 1984; Section 80 (1) No person shall begin a demolition to which this Act applies unless- (a) They have given the Local Authority notice of their intention to do so; and (b) either - (i) The Local Authority has served a notice on them under section 81 of this Act, specifying what works and steps etc. are required in connection with the demolition; or (ii) the relevant period has expired (6 weeks from giving of notice under section 80 of this act) or such longer period as may, in writing, be allowed. (2) A notice under this section shall be in writing and shall specify the building to which it relates giving such notice to a Local Authority to send or give a copy of it - (a) to the occupier of any building adjacent to the building being demolished. (b) to the statutory undertakers (3) A person who contravenes sub-section (1) above shall be guilty of an offence and liable on summary conviction to a fine not exceeding Level 4 (£2,500).