Pulling the dossier…
Pulling the dossier…
Property sits inside Hampstead Conservation Area (Sub-Area 3). Permitted development rights are modified. Recent approvals on this street suggest a 3m single-storey rear in matching stock brick is within policy.
Route cards use the same permitted-development screen as the live free check. The address and designations above are illustrative; the verdict logic is not.
VERIFY
A single-storey rear extension may still be permitted development — but not the larger route.
Rear extension guide →PERMISSION REQUIRED
A side return extension here needs planning permission.
Side return extension guide →PERMISSION REQUIRED
A loft conversion here needs planning permission.
Loft conversion guide →PERMISSION REQUIRED
A basement needs planning permission.
Basement extension guide →Indicative London ranges, calibrated against real London project data — low / expected / high, never a quotation. VAT and professional fees usually extra. Only a builder pricing drawings can tell you what this specific job costs.
This check is free. When you need someone to take the project on, tell us what you're planning and we'll pass it to Hampstead Architecture and Planning (ARB-registered architects), who will reply to you directly and quote for their own work. No obligation.
Source: HM Land Registry Price Paid Data. Open Government Licence. Sold prices only — no floor area, so not £/sqm.
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.