Policy information sourced from Sevenoaks Allocations and Development Management Plan

GB2 - Basements Within Residential Developments in the Green Belt

Proposals to extend or replace a dwelling in the Green Belt that includes the provision of a basement which would meet the following criteria will be permitted and will not be subject to the floorspace allowance as set out in Policies GB1 and GB4:

a) the basement would not exceed the footprint of the original dwelling (based on the footprint of the original building as at 1st July 1948 or, when it was first constructed, if this is later);

b) the basement would be situated entirely underground with no part of it visible at any point externally;

c) there would be no external windows, entrances or exits to the basement;

d) the extension or replacement dwelling would not be artificially raised above natural ground level to accommodate the extension; and

e) the elements of the proposal situated above ground would comply with Policy GB1 (extension) or GB4 (replacement dwellings) in all other respects;

For basement proposals that do not comply with the above, the floorspace of the basement shall be included within the calculation for the purpose of Policy GB1 or GB4.

For more information please see the Allocations and Development Management Plan