Rear Dormer Loft Conversion Drawings in Westminster

Which Westminster postcodes does this rear dormer service cover?

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

What changes about a rear dormer in each part of Westminster?

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

• Pimlico (SW1V) — rear dormer work in Pimlico means regency terraces, post-war estates. Pimlico is Regency stucco terraces, grid plan. Trussed post-war roofs need a full structural redesign before a dormer throughout SW1V. Westminster City Council decides the Pimlico application, and Tate Britain anchors the Pimlico location plan.
• Soho (W1D, W1F) — Georgian fragments, mixed-use defines Soho, where georgian terraces, mixed-use set what a rear dormer can do. A dormer on a Georgian roof has to sit behind the parapet line to stand any chance of consent across W1D. Any Soho rear dormer is validated by Westminster City Council, with Soho Square the usual Soho reference point on the site plan.
• Covent Garden (WC2E, WC2H) — Georgian piazza, listed buildings defines Covent Garden, where georgian terraces, conversions set what a rear dormer can do. A dormer on a Georgian roof has to sit behind the parapet line to stand any chance of consent across WC2E. Any Covent Garden rear dormer is validated by Westminster City Council, with Royal Opera House the usual Covent Garden reference point on the site plan.
• St John's Wood (NW8) — a rear dormer in St John's Wood starts from victorian villas, mansion blocks, and St John's Wood reads as Victorian villas, mansion blocks. Full-width rear dormers on Victorian terraces here are the default in NW8. Westminster City Council assesses St John's Wood rear dormers against its own St John's Wood character guidance, and the location plan we draw for St John's Wood references Lord's Cricket Ground.
• Bayswater (W2) — a rear dormer in Bayswater starts from victorian stucco terraces, and Bayswater reads as Victorian stucco terraces. Full-width rear dormers on Victorian terraces here are the default in W2. Westminster City Council assesses Bayswater rear dormers against its own Bayswater character guidance, and the location plan we draw for Bayswater references Hyde Park.
• Paddington (W2) — a rear dormer in Paddington starts from regency terraces, modern apartments, and Paddington reads as Regency and Victorian terraces, canal-side regen. Shallow modern roof pitches rarely leave the head height a dormer needs in W2. Westminster City Council assesses Paddington rear dormers against its own Paddington character guidance, and the location plan we draw for Paddington references Paddington Basin.
• Victoria (SW1E, SW1W) — rear dormer work in Victoria means regency terraces, post-war flats. Victoria is Regency terraces, mixed-use. Trussed post-war roofs need a full structural redesign before a dormer throughout SW1E. Westminster City Council decides the Victoria application, and Victoria Station anchors the Victoria location plan.

What local planning policy applies to a rear dormer in Westminster?

How designation changes a Westminster rear dormer: Westminster City Council maintains 56 conservation areas, including Soho, Covent Garden, St John's Wood. Inside any of them a Westminster rear dormer cannot rely on permitted development, and the route becomes a £548 householder application determined in 8 weeks rather than a £249 prior approval in 6 weeks. Belgravia sets the tone for Westminster casework.

What Article 4 removes near Westminster: Multiple Article 4 Directions — office-to-residential restrictions, HMO conversions, retail to residential in shopping zones. Before pricing a rear dormer we check whether the NW8 address is inside the mapped area, because Westminster City Council draws the Westminster boundary street by street rather than across the whole of Westminster.

Digging below a Westminster 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 rear dormer in Westminster involves excavation that is read beside the Party Wall etc. Act 1996, which needs two months notice for a Westminster dig within 3 m of a neighbour, and Westminster City Council expects the NW8 ground conditions addressed in the application.

The building fabric around Westminster: 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 rear dormer in Westminster 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 Westminster property sits on a boundary?

• Camden — cross the Westminster boundary and Camden Council takes the rear dormer instead, applying 40 conservation areas of its own around NW1. We re-price rear dormers at the Westminster edge because Camden policy and Westminster policy rarely align on rear dormer depth.
• Kensington and Chelsea — cross the Westminster boundary and RBKC Planning takes the rear dormer instead, applying 38 conservation areas of its own around SW1. We re-price rear dormers at the Westminster edge because Kensington and Chelsea policy and Westminster policy rarely align on rear dormer depth.
• Wandsworth — cross the Westminster boundary and Wandsworth Council takes the rear dormer instead, applying 45 conservation areas of its own around SW8. We re-price rear dormers at the Westminster edge because Wandsworth policy and Westminster policy rarely align on rear dormer depth.
• Lambeth — adjoining Westminster, with 64 conservation areas centred on SE1. A rear dormer on the far side of the Westminster line is determined by Lambeth Council, so the Westminster quote for rear dormers is checked against Lambeth guidance before it is issued.

Sources for this Westminster rear dormer 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.