Rear Dormer Loft Conversion Drawings in St John's Wood (NW8)

Which NW8 postcodes does this rear dormer service cover?

Every NW8 postcode district we draw in, the stock that dominates it and the authority that validates a rear dormer there. NW8 fees below are the statutory England rates for 2026, not rear dormer estimates.

What changes about a rear dormer in each part of NW8?

Roof pitch, wall build-up and plot depth change every few NW8 streets, and each one changes what a rear dormer can achieve at that address.

• Inside NW8: 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.
• Bordering NW8: Mayfair (W1J, W1K) — Georgian listed townhouses, luxury defines Mayfair, where georgian townhouses, listed buildings 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 W1J. Any Mayfair rear dormer is validated by Westminster City Council, with Berkeley Square the usual Mayfair reference point on the site plan.
• Bordering NW8: Belgravia (SW1X, SW1W) — white stucco Regency terraces defines Belgravia, where regency stucco terraces, listed buildings set what a rear dormer can do. Full-width rear dormers on Victorian terraces here are the default across SW1X. Any Belgravia rear dormer is validated by Westminster City Council, with Eaton Square the usual Belgravia reference point on the site plan.
• Bordering NW8: Marylebone (W1U, W1G, W1H) — Georgian and Victorian terraces, mansion blocks defines Marylebone, where georgian terraces, edwardian mansion blocks 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 W1U. Any Marylebone rear dormer is validated by Westminster City Council, with Marylebone High Street the usual Marylebone reference point on the site plan.
• Bordering NW8: Pimlico (SW1V) — Regency stucco terraces, grid plan defines Pimlico, where regency terraces, post-war estates set what a rear dormer can do. Trussed post-war roofs need a full structural redesign before a dormer across SW1V. Any Pimlico rear dormer is validated by Westminster City Council, with Tate Britain the usual Pimlico reference point on the site plan.
• Bordering NW8: 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.
• Bordering NW8: 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.
• Bordering NW8: 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.
• Bordering NW8: Paddington (W2) — rear dormer work in Paddington means regency terraces, modern apartments. Paddington is Regency and Victorian terraces, canal-side regen. Shallow modern roof pitches rarely leave the head height a dormer needs throughout W2. Westminster City Council decides the Paddington application, and Paddington Basin anchors the Paddington location plan.
• Bordering NW8: Victoria (SW1E, SW1W) — a rear dormer in Victoria starts from regency terraces, post-war flats, and Victoria reads as Regency terraces, mixed-use. Trussed post-war roofs need a full structural redesign before a dormer in SW1E. Westminster City Council assesses Victoria rear dormers against its own Victoria character guidance, and the location plan we draw for Victoria references Victoria Station.

Does NW8 planning policy restrict a rear dormer?

NW8 (St John's Wood) conservation designations: there are 56 across Westminster City Council, Covent Garden, St John's Wood, Mayfair among them. Designation costs a NW8 (St John's Wood) owner the permitted-development route: a rear dormer then needs a £548 householder application over 8 weeks, in place of the £249 prior approval route that takes 6 weeks. Covent Garden is the NW8 (St John's Wood) designation that most often changes a rear dormer design.

Article 4 and your NW8 (St John's Wood) rear dormer: Multiple Article 4 Directions — office-to-residential restrictions, HMO conversions, retail to residential in shopping zones. At a NW8 address that matters twice over, because Westminster City Council applies the direction unevenly across NW8 (St John's Wood) — we read the NW8 (St John's Wood) policies map for the exact NW8 address before quoting rear dormers.

NW8 (St John's Wood) below-ground policy: Westminster basement policy restricts to single-storey, typically under 50% of rear garden footprint; lightwells and rooflights strictly controlled in conservation areas. Any rear dormer in NW8 (St John's Wood) that goes below existing foundations triggers two months notice under section 6 of the Party Wall etc. Act 1996, and Westminster City Council will want the NW8 ground and groundwater position set out.

NW8 (St John's Wood) housing stock: 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. Read that before choosing a rear dormer route in NW8 (St John's Wood) — construction, not postcode, sets what is achievable. Westminster City Council charges £548 for a householder application and has 8 weeks to determine it.

NW8 (St John's Wood) conservation designations: there are 40 across Camden Council, Hampstead, Primrose Hill, Bloomsbury among them. Designation costs a NW8 (St John's Wood) owner the permitted-development route: a rear dormer then needs a £548 householder application over 8 weeks, in place of the £249 prior approval route that takes 6 weeks. Hampstead is the NW8 (St John's Wood) designation that most often changes a rear dormer design.

Article 4 and your NW8 (St John's Wood) rear dormer: Article 4 removes permitted development for HMO conversions (C3 to C4) across the borough, plus restrictions on basement extensions in 12 conservation areas. At a NW8 address that matters twice over, because Camden Council applies the direction unevenly across NW8 (St John's Wood) — we read the NW8 (St John's Wood) policies map for the exact NW8 address before quoting rear dormers.

NW8 (St John's Wood) below-ground policy: Camden's basement policy (Policy A5) restricts single-storey basements to 50% of garden area; double-storey basements generally refused outside commercial zones. Any rear dormer in NW8 (St John's Wood) that goes below existing foundations triggers two months notice under section 6 of the Party Wall etc. Act 1996, and Camden Council will want the NW8 ground and groundwater position set out.

NW8 (St John's Wood) housing stock: Victorian and Edwardian terraces, Georgian townhouses in Bloomsbury and Hampstead, post-war mansion blocks, modern developments in King's Cross. Creative, affluent in Hampstead and Primrose Hill; dense mixed-use around Camden Town and Kings Cross; academic character in Bloomsbury. Read that before choosing a rear dormer route in NW8 (St John's Wood) — construction, not postcode, sets what is achievable. Camden Council charges £548 for a householder application and has 8 weeks to determine it.

Which neighbouring authorities border NW8?

• Lambeth — adjoining NW8 (St John's Wood), with 64 conservation areas centred on SE1. A rear dormer on the far side of the NW8 (St John's Wood) line is determined by Lambeth Council, so the NW8 (St John's Wood) quote for rear dormers is checked against Lambeth guidance before it is issued.
• City of London — adjoining NW8 (St John's Wood), with 27 conservation areas centred on EC1. A rear dormer on the far side of the NW8 (St John's Wood) line is determined by City of London Corporation, so the NW8 (St John's Wood) quote for rear dormers is checked against City of London guidance before it is issued.
• Camden — adjoining NW8 (St John's Wood), with 40 conservation areas centred on NW1. A rear dormer on the far side of the NW8 (St John's Wood) line is determined by Camden Council, so the NW8 (St John's Wood) quote for rear dormers is checked against Camden guidance before it is issued.
• Kensington and Chelsea — the Kensington and Chelsea boundary runs against Westminster, so a rear dormer a street from NW8 (St John's Wood) is decided by RBKC Planning instead. Kensington and Chelsea runs 38 conservation areas across SW1 and its neighbours, which is why rear dormers priced for NW8 (St John's Wood) are re-checked against Kensington and Chelsea policy whenever the NW8 (St John's Wood) address sits on that edge.
• Barnet — adjoining NW8 (St John's Wood), with 20 conservation areas centred on N2. A rear dormer on the far side of the NW8 (St John's Wood) line is determined by Barnet Council, so the NW8 (St John's Wood) quote for rear dormers is checked against Barnet guidance before it is issued.
• Haringey — adjoining NW8 (St John's Wood), with 29 conservation areas centred on N4. A rear dormer on the far side of the NW8 (St John's Wood) line is determined by Haringey Council, so the NW8 (St John's Wood) quote for rear dormers is checked against Haringey guidance before it is issued.
• Brent — cross the NW8 (St John's Wood) boundary and Brent Council takes the rear dormer instead, applying 22 conservation areas of its own around NW2. We re-price rear dormers at the NW8 (St John's Wood) edge because Brent policy and Camden policy rarely align on rear dormer depth.

Sources for this NW8 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.