N20 · Totteridge & Whetstone
N20 includes the Totteridge conservation area — a rural-edge village street with Article 4 directions over much of it — alongside the suburban stock of Whetstone. The split is decisive: an Article 4 address needs a full application, while many Whetstone houses keep permitted development rights.
Location data: postcodes.io · Constraints: planning.data.gov.uk (borough-level) · Open Government Licence
Constraint context · Barnet
Real · planning.data.gov.ukBarnet has 16 designated conservation areas and 48 Article 4 areas. A district is too coarse to say which apply to your house — postcode districts span many streets and designations are drawn street by street. Enter a full postcode below for the point-level check, or read the full borough picture on the Barnet planning guide.
Pinpoint your street
More of Barnet
Planning Permission Checker provides planning and cost intelligence for early feasibility only. It is not legal, planning, valuation, architectural, structural, or surveying advice. All estimates are indicative and must be verified by qualified professionals before purchase, design, planning submission, or construction.
Cost estimates are indicative only — not a quotation. Final price depends on survey, specification, structure, access, party wall matters, VAT, professional fees, and contractor availability.
Planning outcomes are not guaranteed. Local planning authorities make final decisions.