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Architectural drawings in W1H

Marylebone — covered by Westminster City Council.

W1H at a glance

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

Victorian terraced street in London — architectural drawings
Services in W1H

Drawings for every W1H property type

Questions about W1H

W1H planning FAQ

What borough is W1H?

W1H primarily covers Marylebone in Westminster.

Do I need planning permission in W1H?

Decisions for W1H 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 W1H?

Building regs from £950. We do not charge hourly. Free site survey across all W1H addresses.

How long does a project take in W1H?

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 W1H?

Marylebone in W1H is characterised by the housing stock of Westminster — broadly grand georgian and regency terraces in belgravia and pimlico.

Boroughs covering W1H

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 W1H
Every set is checked line by line against the validation checklist before it leaves the office.
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Which postcode districts around W1H do we cover for drawing package work?

Every W1H postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. W1H fees below are the statutory England rates for 2026, not drawing package estimates.

PostcodeAreaDominant stockWhat it means for a drawing package
W1HMaryleboneGeorgian terraces, Edwardian mansion blocksMarylebone sits wholly inside W1H, so Westminster City Council validates every drawing package submitted from an W1H address.
NW8St John's WoodVictorian villas, mansion blocksAdjoining district to W1H, also inside Westminster for drawing package purposes.
SW1AWhitehall / Buckingham Palacemixed stockAdjoining district to W1H, also inside Westminster for drawing package purposes.
SW1EVictoriaRegency terraces, post-war flatsAdjoining district to W1H, also inside Westminster for drawing package purposes.
SW1HSt James's Parkmixed stockAdjoining district to W1H, also inside Westminster for drawing package purposes.

How does a drawing package differ street by street across W1H?

Roof pitch, wall build-up and plot depth change every few W1H streets, and each one changes what a drawing package can achieve at that address.

How do conservation areas and Article 4 affect a drawing package in W1H?

Conservation areas covering W1H (Marylebone): Westminster City Council runs 56, and Soho, Covent Garden, St John's Wood are the ones W1H (Marylebone) owners meet most. A drawing package inside a W1H (Marylebone) conservation area loses permitted development, so the W1H (Marylebone) submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Marylebone a drawing package is judged on the street elevation first.

What Article 4 removes near W1H (Marylebone): Multiple Article 4 Directions — office-to-residential restrictions, HMO conversions, retail to residential in shopping zones. Before pricing a drawing package we check whether the W1H address is inside the mapped area, because Westminster City Council draws the W1H (Marylebone) boundary street by street rather than across the whole of W1H (Marylebone).

Digging below a W1H (Marylebone) 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 W1H (Marylebone) involves excavation that is read beside the Party Wall etc. Act 1996, which needs two months notice for a W1H (Marylebone) dig within 3 m of a neighbour, and Westminster City Council expects the W1H ground conditions addressed in the application.

The building fabric around W1H (Marylebone): 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. A drawing package in W1H (Marylebone) is scoped against that stock first, because it decides whether the scheme runs as permitted development, a £274 Lawful Development Certificate, or a full £548 application to Westminster City Council.

What happens if a W1H property sits on a boundary?

Sources for this W1H 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 W1H — the exterior of London house before works
The exterior of a london house before works — architectural drawings in W1H.
Further reading

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