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Postcode coverage

Architectural drawings in W1B

Regent Street — covered by Westminster City Council.

W1B at a glance

Primary area
Regent Street
Borough
Westminster
Planning authority
Westminster City Council
Article 4 in force
Yes
Conservation areas (borough)
56
Quote turnaround
Same day

Planning drawings and blueprints on a studio desk — architectural drawings in London
Services in W1B

Drawings for every W1B property type

Questions about W1B

W1B planning FAQ

What borough is W1B?

W1B primarily covers Regent Street in Westminster.

Do I need planning permission in W1B?

Decisions for W1B are made by Westminster City Council. Standard Permitted Development rules apply for most rear extensions and loft conversions on terraced and semi-detached houses, unless the property is in a conservation area, is listed, or sits under an Article 4 Direction. Article 4 in Westminster: Yes.

What does it cost to get drawings in W1B?

Building regs from £950. We do not charge hourly. Free site survey across all W1B addresses.

How long does a project take in W1B?

From first call to planning decision: typically 12–14 weeks. Site survey week 1, design weeks 2–3, validation 1–2 weeks, statutory 8-week determination. Westminster City Council timelines align with the national norm.

What housing stock dominates W1B?

Regent Street in W1B is characterised by the housing stock of Westminster — broadly grand georgian and regency terraces in belgravia and pimlico.

Boroughs covering W1B

Local authorities

Nearby postcodes in Westminster

An architectural technologist checking a printed set of house drawings, marking a proposed elevation in red — architectural drawings in W1B
Every set is checked line by line against the validation checklist before it leaves the office.
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Which postcode districts around W1B do we cover for drawing package work?

Every W1B postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. W1B fees below are the statutory England rates for 2026, not drawing package estimates.

PostcodeAreaDominant stockWhat it means for a drawing package
W1BRegent Streetmixed Victorian and inter-war stockRegent Street sits wholly inside W1B, so Westminster City Council validates every drawing package submitted from an W1B address.
NW8St John's WoodVictorian villas, mansion blocksAdjoining district to W1B, also inside Westminster for drawing package purposes.
SW1AWhitehall / Buckingham Palacemixed stockAdjoining district to W1B, also inside Westminster for drawing package purposes.
SW1EVictoriaRegency terraces, post-war flatsAdjoining district to W1B, also inside Westminster for drawing package purposes.
SW1HSt James's Parkmixed stockAdjoining district to W1B, also inside Westminster for drawing package purposes.

Which W1B neighbourhoods suit a drawing package best?

Roof pitch, wall build-up and plot depth change every few W1B streets, and each one changes what a drawing package can achieve at that address.

Does W1B planning policy restrict a drawing package?

W1B (Regent Street) conservation designations: there are 56 across Westminster City Council, Belgravia, Marylebone, Pimlico among them. Designation costs a W1B (Regent Street) owner the permitted-development route: a drawing package then needs a £548 householder application over 8 weeks, in place of the £249 prior approval route that takes 6 weeks. Mayfair is the W1B (Regent Street) designation that most often changes a drawing package design.

Article 4 and your W1B (Regent Street) drawing package: Multiple Article 4 Directions — office-to-residential restrictions, HMO conversions, retail to residential in shopping zones. At a W1B address that matters twice over, because Westminster City Council applies the direction unevenly across W1B (Regent Street) — we read the W1B (Regent Street) policies map for the exact W1B address before quoting architectural drawings.

Digging below a W1B (Regent Street) property: Westminster basement policy restricts to single-storey, typically under 50% of rear garden footprint; lightwells and rooflights strictly controlled in conservation areas. Where a drawing package in W1B (Regent Street) involves excavation that is read beside the Party Wall etc. Act 1996, which needs two months notice for a W1B (Regent Street) dig within 3 m of a neighbour, and Westminster City Council expects the W1B ground conditions addressed in the application.

What W1B (Regent Street) is built from: Grand Georgian and Regency terraces in Belgravia and Pimlico; Victorian and Edwardian mansion blocks; heritage-rich townhouses throughout; very high listed building density. Heritage-first planning approach; listed buildings on almost every street; basement and rear extension policies particularly strict. That mix decides the drawing package route in W1B (Regent Street) more than the postcode does, and it is what a Westminster City Council case officer reads first. A householder application costs £548 paid to Westminster City Council direct, with 8 weeks to a decision once validated.

Who decides a drawing package on the edge of W1B?

Sources for this W1B drawing package page: borough policies maps and conservation-area registers (2025–26), Royal Mail postcode district boundaries, the Town and Country Planning (Fees for Applications) (England) Regulations, the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended, and the Party Wall etc. Act 1996.

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Architectural drawings in W1B — the exterior of London house before works
The exterior of a london house before works — architectural drawings in W1B.
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