Policy information sourced from Hampstead Neighbourhood Plan
BA1: Local Requirements for Basement Impact Assessments
- All basement developments are required by the local authority to complete a basement impact assessment (BIA). For those developments whose conditions require investigations beyond the screening stage, attention should be given to the additional steps outlined in 5.12.
- All proposals for basement development must aim for no higher than Burland Scale 1 (“very slight”) and construction will not be allowed to proceed where there is evidence that damage to neighbouring properties would exceed Burland Scale 1.
- Basement developments under gardens should leave a minimum distance of 15m from any veteran tree or from a boundary that is an historic tree line (see Map 5 for details of both), unless it can be demonstrated that any harm to the trees would not be significant or could be mitigated.
For more information please see the Neighbourhood Plan