Application guidance
The demolition must not commence until the local authority issues a counter notice (under Section 81 of the Building Act 1984) or 6 weeks has expired from the submission of the demolition notice.
When a contractor has received a Section 81 counter notice, or 6 weeks has expired from the giving of the demolition notice under Section 80, demolition can commence.
Demolition work must also comply with the Construction (Design and Management) Regulations 2015 and a health and safety plan produced by the principal contractor. It's usual for demolition sites to be adequately hoarded off, preventing unauthorised access by children. You should notify the Health and Safety Executive if the building is thought to contain asbestos.