House Extensions in Hammersmith

Which postcode districts around Hammersmith do we cover for house extension work?

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

How does a house extension differ street by street across Hammersmith?

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

• Hammersmith (W6) — house extension work in Hammersmith means victorian terraces, mansion blocks. Hammersmith is Victorian terraces, riverside character. The side-return infill is the classic move on these Victorian terraces — 3 throughout W6. Hammersmith & Fulham Council decides the Hammersmith application, and Hammersmith Bridge anchors the Hammersmith location plan.
• Near Hammersmith: Brackenbury Village (W6) — house extension work in Brackenbury Village means victorian terraces. Brackenbury Village is Victorian conservation area. The side-return infill is the classic move on these Victorian terraces — 3 throughout W6. Hammersmith & Fulham Council decides the Brackenbury Village application, and Ravenscourt Park anchors the Brackenbury Village location plan.
• Near Hammersmith: Sand's End (SW6) — house extension work in Sand's End means victorian terraces, new-build. Sand's End is Victorian terraces, riverside regen. The side-return infill is the classic move on these Victorian terraces — 3 throughout SW6. Hammersmith & Fulham Council decides the Sand's End application, and Imperial Wharf anchors the Sand's End location plan.
• Near Hammersmith: Fulham (SW6) — Victorian bay-fronted terraces defines Fulham, where victorian terraces, mansion blocks set what a house extension can do. The side-return infill is the classic move on these Victorian terraces — 3 across SW6. Any Fulham house extension is validated by Hammersmith & Fulham Council, with Fulham Broadway the usual Fulham reference point on the site plan.
• Near Hammersmith: Shepherd's Bush (W12) — a house extension in Shepherd's Bush starts from victorian and edwardian terraces, and Shepherd's Bush reads as Victorian and Edwardian terraces. The side-return infill is the classic move on these Victorian terraces — 3 in W12. Hammersmith & Fulham Council assesses Shepherd's Bush house extensions against its own Shepherd's Bush character guidance, and the location plan we draw for Shepherd's Bush references Westfield London.
• Near Hammersmith: White City (W12) — a house extension in White City starts from post-war estates, new-build, and White City reads as regenerated quarter, post-war estates. Post-war houses on these estates often sit under an estate management scheme in W12. Hammersmith & Fulham Council assesses White City house extensions against its own White City character guidance, and the location plan we draw for White City references Television Centre.
• Near Hammersmith: Parsons Green (SW6) — Victorian bay-fronted terraces around the green defines Parsons Green, where victorian terraces set what a house extension can do. The side-return infill is the classic move on these Victorian terraces — 3 across SW6. Any Parsons Green house extension is validated by Hammersmith & Fulham Council, with Parsons Green park the usual Parsons Green reference point on the site plan.

How do conservation areas and Article 4 affect a house extension in Hammersmith?

How designation changes a Hammersmith house extension: Hammersmith & Fulham Council maintains 45 conservation areas, including Brackenbury Village, Fulham Palace Road, Parsons Green. Inside any of them a Hammersmith house extension cannot rely on permitted development, and the route becomes a £258 householder application determined in 8 weeks rather than a £120 prior approval in 6 weeks. Fulham Palace Road sets the tone for Hammersmith casework.

What Article 4 removes near Hammersmith: Article 4 removes PD for HMO conversions; restrictions on ground-floor shop-to-residential in certain streets. Before pricing a house extension we check whether the W6 address is inside the mapped area, because Hammersmith & Fulham Council draws the Hammersmith boundary street by street rather than across the whole of Hammersmith.

Hammersmith housing stock: Victorian and Edwardian terraces — particularly two-storey bay-fronted terraces south of the river in Fulham and Parsons Green; mansion blocks along main roads. Suburban-feel residential streets with strong conservation area coverage; well-established mansard precedents on many terraces. Read that before choosing a house extension route in Hammersmith — construction, not postcode, sets what is achievable. House extensions in Hammersmith start at £1,225 on a fixed fee, or £1,750 for the Complete package covering both Hammersmith & Fulham Council submissions.

Which neighbouring authorities border Hammersmith?

• Richmond upon Thames — adjoining Hammersmith, with 72 conservation areas centred on SW13. A house extension on the far side of the Hammersmith line is determined by Richmond Council, so the Hammersmith quote for house extensions is checked against Richmond upon Thames guidance before it is issued.
• Wandsworth — cross the Hammersmith boundary and Wandsworth Council takes the house extension instead, applying 45 conservation areas of its own around SW8. We re-price house extensions at the Hammersmith edge because Wandsworth policy and Hammersmith and Fulham policy rarely align on house extension depth.
• Kensington and Chelsea — the Kensington and Chelsea boundary runs against Hammersmith and Fulham, so a house extension a street from Hammersmith is decided by RBKC Planning instead. Kensington and Chelsea runs 38 conservation areas across SW1 and its neighbours, which is why house extensions priced for Hammersmith are re-checked against Kensington and Chelsea policy whenever the Hammersmith address sits on that edge.
• Brent — adjoining Hammersmith, with 22 conservation areas centred on NW2. A house extension on the far side of the Hammersmith line is determined by Brent Council, so the Hammersmith quote for house extensions is checked against Brent guidance before it is issued.

Sources for this Hammersmith house 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.