Kitchen extension in Westminster

Which postcode districts around Westminster do we cover for kitchen extension work?

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

Which Westminster neighbourhoods suit a kitchen extension best?

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

• Covent Garden (WC2E, WC2H) — kitchen extension work in Covent Garden means georgian terraces, conversions. Covent Garden is Georgian piazza, listed buildings. Georgian rear elevations here are usually the listed or locally listed face of the building throughout WC2E. Westminster City Council decides the Covent Garden application, and Royal Opera House anchors the Covent Garden location plan.
• St John's Wood (NW8) — a kitchen extension in St John's Wood starts from victorian villas, mansion blocks, and St John's Wood reads as Victorian villas, mansion blocks. The side-return infill is the classic move on these Victorian terraces — 3 m of permitted development depth plus the width of the original side passage in NW8. Westminster City Council assesses St John's Wood kitchen extensions 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) — Victorian stucco terraces defines Bayswater, where victorian stucco terraces set what a kitchen extension can do. The side-return infill is the classic move on these Victorian terraces — 3 m of permitted development depth plus the width of the original side passage across W2. Any Bayswater kitchen extension is validated by Westminster City Council, with Hyde Park the usual Bayswater reference point on the site plan.
• Paddington (W2) — kitchen extension work in Paddington means regency terraces, modern apartments. Paddington is Regency and Victorian terraces, canal-side regen. Modern housing here is frequently covered by a planning condition removing permitted development rights throughout W2. Westminster City Council decides the Paddington application, and Paddington Basin anchors the Paddington location plan.
• Victoria (SW1E, SW1W) — Regency terraces, mixed-use defines Victoria, where regency terraces, post-war flats set what a kitchen extension can do. Post-war houses on these estates often sit under an estate management scheme across SW1E. Any Victoria kitchen extension is validated by Westminster City Council, with Victoria Station the usual Victoria reference point on the site plan.
• Westbourne Green (W2, W9) — Victorian terraces and mansion blocks defines Westbourne Green, where victorian terraces, mansion blocks set what a kitchen extension can do. The side-return infill is the classic move on these Victorian terraces — 3 m of permitted development depth plus the width of the original side passage across W2. Any Westbourne Green kitchen extension is validated by Westminster City Council, with Royal Oak the usual Westbourne Green reference point on the site plan.
• Maida Vale (W9) — Edwardian mansion blocks, canal-side defines Maida Vale, where edwardian mansion blocks, victorian villas set what a kitchen extension can do. The side-return infill is the classic move on these Victorian terraces — 3 m of permitted development depth plus the width of the original side passage across W9. Any Maida Vale kitchen extension is validated by Westminster City Council, with Little Venice the usual Maida Vale reference point on the site plan.

What local planning policy applies to a kitchen extension in Westminster?

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

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 kitchen extension 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 kitchen extension 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.

Westminster 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 kitchen extension route in Westminster — construction, not postcode, sets what is achievable.

Which neighbouring authorities border Westminster?

• City of London — cross the Westminster boundary and City of London Corporation takes the kitchen extension instead, applying 27 conservation areas of its own around EC1. We re-price kitchen extensions at the Westminster edge because City of London policy and Westminster policy rarely align on kitchen extension depth.
• Camden — the Camden boundary runs against Westminster, so a kitchen extension a street from Westminster is decided by Camden Council instead. Camden runs 40 conservation areas across NW1 and its neighbours, which is why kitchen extensions priced for Westminster are re-checked against Camden policy whenever the Westminster address sits on that edge.
• Kensington and Chelsea — the Kensington and Chelsea boundary runs against Westminster, so a kitchen extension a street from Westminster is decided by RBKC Planning instead. Kensington and Chelsea runs 38 conservation areas across SW1 and its neighbours, which is why kitchen extensions priced for Westminster are re-checked against Kensington and Chelsea policy whenever the Westminster address sits on that edge.
• Wandsworth — the Wandsworth boundary runs against Westminster, so a kitchen extension a street from Westminster is decided by Wandsworth Council instead. Wandsworth runs 45 conservation areas across SW8 and its neighbours, which is why kitchen extensions priced for Westminster are re-checked against Wandsworth policy whenever the Westminster address sits on that edge.

Sources for this Westminster kitchen extension 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.