Georgian townhouse extensions in Westminster

Which postcode districts around Westminster do we cover for Georgian townhouse project work?

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

How does a Georgian townhouse project differ street by street across Westminster?

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

• Paddington (W2) — Georgian townhouse project work in Paddington means regency terraces, modern apartments. Paddington is Regency and Victorian terraces, canal-side regen. Westminster City Council decides the Paddington application, and Paddington Basin anchors the Paddington location plan.
• Victoria (SW1E, SW1W) — a Georgian townhouse project in Victoria starts from regency terraces, post-war flats, and Victoria reads as Regency terraces, mixed-use. in SW1E. Westminster City Council assesses Victoria Georgian townhouse projects against its own Victoria character guidance, and the location plan we draw for Victoria references Victoria Station.
• Westbourne Green (W2, W9) — a Georgian townhouse project in Westbourne Green starts from victorian terraces, mansion blocks, and Westbourne Green reads as Victorian terraces and mansion blocks. in W2. Westminster City Council assesses Westbourne Green Georgian townhouse projects against its own Westbourne Green character guidance, and the location plan we draw for Westbourne Green references Royal Oak.
• Maida Vale (W9) — Georgian townhouse project work in Maida Vale means edwardian mansion blocks, victorian villas. Maida Vale is Edwardian mansion blocks, canal-side. Westminster City Council decides the Maida Vale application, and Little Venice anchors the Maida Vale location plan.
• Mayfair (W1J, W1K) — Georgian townhouse project work in Mayfair means georgian townhouses, listed buildings. Mayfair is Georgian listed townhouses, luxury. Westminster City Council decides the Mayfair application, and Berkeley Square anchors the Mayfair location plan.
• Belgravia (SW1X, SW1W) — Georgian townhouse project work in Belgravia means regency stucco terraces, listed buildings. Belgravia is white stucco Regency terraces. Westminster City Council decides the Belgravia application, and Eaton Square anchors the Belgravia location plan.
• Marylebone (W1U, W1G, W1H) — Georgian townhouse project work in Marylebone means georgian terraces, edwardian mansion blocks. Marylebone is Georgian and Victorian terraces, mansion blocks. Westminster City Council decides the Marylebone application, and Marylebone High Street anchors the Marylebone location plan.

How do conservation areas and Article 4 affect a Georgian townhouse project in Westminster?

How designation changes a Westminster Georgian townhouse project: Westminster City Council maintains 56 conservation areas, including Mayfair, Belgravia, Marylebone. Inside any of them a Westminster Georgian townhouse project 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. Soho sets the tone for Westminster casework.

Westminster and Article 4: Multiple Article 4 Directions — office-to-residential restrictions, HMO conversions, retail to residential in shopping zones. A Georgian townhouse project planned at a NW8 address is checked against that direction first; Westminster City Council publishes the Westminster extent, and the NW8 line rarely follows the Westminster boundary you would expect.

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 Georgian townhouse project 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.

What Westminster 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 Georgian townhouse project route in Westminster more than the postcode does.

What happens if a Westminster property sits on a boundary?

• Wandsworth — the Wandsworth boundary runs against Westminster, so a Georgian townhouse project a street from Westminster is decided by Wandsworth Council instead. Wandsworth runs 45 conservation areas across SW8 and its neighbours, which is why Georgian townhouse projects priced for Westminster are re-checked against Wandsworth policy whenever the Westminster address sits on that edge.
• Lambeth — cross the Westminster boundary and Lambeth Council takes the Georgian townhouse project instead, applying 64 conservation areas of its own around SE1. We re-price Georgian townhouse projects at the Westminster edge because Lambeth policy and Westminster policy rarely align on Georgian townhouse project depth.
• City of London — the City of London boundary runs against Westminster, so a Georgian townhouse project a street from Westminster is decided by City of London Corporation instead. City of London runs 27 conservation areas across EC1 and its neighbours, which is why Georgian townhouse projects priced for Westminster are re-checked against City of London policy whenever the Westminster address sits on that edge.
• Camden — adjoining Westminster, with 40 conservation areas centred on NW1. A Georgian townhouse project on the far side of the Westminster line is determined by Camden Council, so the Westminster quote for Georgian townhouse projects is checked against Camden guidance before it is issued.

Sources for this Westminster Georgian townhouse project 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.