Planning Permission in Belsize Park | Fixed-Fee Plans

An Article 4 Direction applies across Camden, so check it before assuming Belsize Park permitted development survives. Belsize Park reads as tree-lined avenues, Edwardian mansion blocks, and that is the context a NW3 scheme is judged in. Conservation status changes the Belsize Park route entirely — Hampstead being the usual case among the 40 designations in Camden. That boundary is verified for the NW3 property at the outset.

Before drawing anything for Belsize Park, we check Article 4 directions against the NW3 boundary. A NW3 survey answers most of it — where the edwardian mansion blocks allows the rear wall to go. The borough policy layer over every NW3 address is set out on Camden planning. The Belsize Park survey then carries into house extension drawings in Belsize Park if the project runs on to construction.

Before Camden Council determines anything, London Borough of Camden has to validate the Belsize Park submission — one to two weeks, longer if a plan is missing. Nothing is drawn for a NW3 address until the existing building is measured.

Statutory periods: 8 weeks from validation for a householder application, 13 weeks for a major scheme, 6 weeks for prior approval with a 21 days neighbour consultation, and 5 weeks for a full plans building control submission. A party structure notice requires one month notice and two months where excavation is involved.

An officer report on the NW3 case is written after the consultation closes. Belsize Park clients receive existing and proposed sheets in one indexed set.

On Belsize Park terraces the objection to expect is loss of light to a rear window. Roof pitch and eaves height on a Belsize Park house are measured, not scaled off.

Serve party wall notices early where NW3 neighbours share a flank wall — on Belsize Park terraces they nearly always do. Once consent is granted, architectural drawings follows for the NW3 property.

Belsize Park is characterised by edwardian mansion blocks, victorian villas, concentrated across NW3 in the Hampstead / Belsize Park area. What the edwardian mansion blocks in Belsize Park allows is a construction question first and a planning question second, and the survey answers it. Translated to the edwardian mansion blocks here: most applications on these Victorian streets are householder applications validated on existing and proposed plans, elevations, a site plan and a location plan. For a Belsize Park owner it decides the structural spec. Ridge and eaves lines along Belsize Park streets are the reference Camden Council uses.

Camden Council assesses Belsize Park basements on standard grounds. building regulations drawings for NW3 properties and loft conversion drawings build on the existing Belsize Park survey data.

What the Belsize Park drawing pack contains

• site location plan for the Belsize Park property
• block plan
• existing and proposed floor plans
• existing and proposed elevations
• Design & Access Statement

Streets and landmarks we survey around Belsize Park

• Rowland Hill — terraced rear elevations — the Rowland Hill party wall position is drawn first.
• Primrose Hill — gardens deep enough for the 8 weeks householder route on a Primrose Hill plot.
• Belsize Avenue — terraced rear elevations — the Belsize Avenue party wall position is drawn first.
• Belsize Lane — terraced rear elevations — the Belsize Lane party wall position is drawn first.
• Belsize Park Gardens — terraced rear elevations — the Belsize Park Gardens party wall position is drawn first.
• Lyndhurst Road — shared flank walls, so Lyndhurst Road party structure notices go out before work starts.
• Waggoner's Walk — shared flank walls, so Waggoner's Walk party structure notices go out before work starts.
• Belsize Park station — height and massing nearby are argued against this frontage.
• Hampstead Heath — it fixes the local datum a Belsize Park roof extension is judged against.
• Eton College — a Belsize Park roof extension is judged against the datum it sets.
• Royal Free Hospital — massing on adjoining NW3 plots is tested against it.

Getting to a Belsize Park survey

Surveyors travel to NW3 addresses from the studio; the nearest stations are Primrose Hill, Hampstead Heath, Finchley Road, Swiss Cottage. Appointments are booked in Belsize Park on weekdays and Saturdays, and the measured survey of a standard edwardian mansion blocks takes two to three hours.

Where Belsize Park sits

on Ordnance Survey grid reference TQ273845, inside the Hampstead and Highgate parliamentary constituency. Location and block plans for Belsize Park start from that grid square. Source.

Practical detail for a Belsize Park submission: transport for Belsize Park runs through Primrose Hill and Hampstead Heath and Finchley Road and Swiss Cottage; correspondence uses LONDON; dialling code 020. Site plans are drawn to the address as Camden Council holds it.

Belsize Park postcode coverage

Belsize Park work spans NW3 (Hampstead / Belsize Park), shared with Hampstead, Swiss Cottage, with the NW3 boundary setting which designations bite.

Streets and stations in Belsize Park

Work in Belsize Park clusters around Rowland Hill, Primrose Hill, Belsize Avenue, Belsize Lane, Belsize Park Gardens, Lyndhurst Road and Waggoner's Walk. most Belsize Park sites are within walking distance of Primrose Hill or Hampstead Heath or Finchley Road.

Areas we cover around Belsize Park

Beyond Belsize Park we cover Gospel Oak (NW5), West Hampstead (NW6), Mayfair (W1J, W1K), Belgravia (SW1X, SW1W), Marylebone (W1U, W1G, W1H), Pimlico (SW1V), and cross into Islington. A consent granted a mile from Belsize Park station is not a precedent for the plot next to it.

Price differences between Belsize Park projects come from the fabric — the edwardian mansion blocks, level changes, and any Hampstead heritage requirement.

Statutory application fees are set by regulation, not by the council: £548 householder, £610 for a new dwelling, £274 for a lawful development certificate, £249 for prior approval.

That fee is collected by London Borough of Camden when the NW3 application is lodged. London planning approval-rate dataset · Camden planning · planning permission across London · planning permission in Gospel Oak.

We are architectural technologists, MCIAT chartered, and every Belsize Park set carries that accountability. Not every Belsize Park scheme is clear-cut. Where Hampstead or the Belsize Park station setting is in play, Camden Council pre-application advice comes before the NW3 submission.

Drawings are produced by chartered members of the Chartered Institute of Architectural Technologists (MCIAT), the professional body for technical design and building-regulations competence. First-time approval across our London caseload is 98%. Statutory fees shown are those in force in England in 2026 under the Town and Country Planning (Fees for Applications) Regulations. Confirm your local authority at gov.uk and submission requirements on the Planning Portal. Studio: 71–75 Shelton Street, London WC2H 9JQ.

We can usually confirm the Belsize Park planning route from the address alone. This Belsize Park page was reviewed in August 2026.