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Free 2026 London Planning Report — Hammersmith W6

A loft conversion bedroom with a sloping ceiling and skylight windows.
W6 · Hammersmith · Hammersmith & Fulham

Planning and building regulation drawings in Hammersmith (W6)

W6 splits into two housing types that call for different drawings. Around Brackenbury Village the Victorian terraces are laid out in tight grids of two and three storeys, on narrow plots where expectations for the depth of a rear extension and the shape of the side return are well established, and where roofs, dormers and party walls sit close to the neighbours. Brackenbury Road and Aldensley Road are among its streets, and the grid runs between Goldhawk Road and Hammersmith Grove.

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  • London Borough of Hammersmith & Fulham granted 99% of 560 householder applications
  • Drawings in about 7 days

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Toward Brook Green the houses become larger, with stucco frontages and villas around the green and Edwardian red-brick mansion blocks on the main approaches. Yeldham Road, Winslow Road, Sussex Place and Playfair Street are among the streets of the Brook Green area. Full-width rear extensions, side returns and loft conversions are all realistic on bigger houses, and the mansion blocks bring internal reconfigurations, flat conversions and the access and party-wall questions that go with shared buildings.

Hammersmith & Fulham controls design closely. The Bradmore conservation area covers the Brackenbury Village grid, Brook Green has its own, and Hammersmith Grove and Hammersmith Broadway add more. Any scheme involving a basement also meets the council's basement policy and the need for an impact assessment. Because the terraces are so closely spaced, roof, dormer and party-wall relationships with the neighbours are tightly assessed. We confirm which controls apply to your address, and what a case officer is likely to look for, before we start drawing.

Planning in Hammersmith: what to know before you apply

Hammersmith & Fulham reads householder drawings against the conservation area that covers the property. Bradmore, Brook Green and Hammersmith Grove each shape expectations for roofs, frontages and materials, and mature trees around the green can bring tree constraints to works at the rear. A basement under a house falls under the borough's basement policy and needs a basement impact assessment alongside the plans. Article 4 directions in parts of the borough remove permitted development for HMO conversions and, within conservation areas, for some frontage and basement works. We check the designation and direction maps for your address and tell you which of them touch the scheme.

Applications are decided by London Borough of Hammersmith & Fulham — its planning pages.

Check your route

Does your Hammersmith project need planning permission?

Route check · Hammersmith (W6)

Listed building?
Conservation area?
Likely permitted development — no planning applicationNeeds checking
  • A single-storey rear extension up to 4 m deep on a detached house, or 3 m on any other house, is Class A permitted development subject to the height and materials conditions.
  • An Article 4 direction applies here and may withdraw this freedom — the schedule must be checked before relying on it.
  • One or more constraints are unknown — we check the council's registers as part of the free appraisal.
  • Where permitted development applies, a lawful development certificate proves it for lenders and buyers.

Sources: GPDO 2015, Schedule 2, Part 1 · Planning Portal — common projects · Building Regulations 2010 — when approval is needed

This is a first-pass indication from the national rules, not planning advice for your property. Your council's registers, any Article 4 schedule and the exact dimensions decide it — the free appraisal checks all three before we recommend a route.

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Hammersmith (W6) in numbers

What London Borough of Hammersmith & Fulham has decided, and what W6 is built of — the two facts that shape every job here.

Householder planning decisions — London Borough of Hammersmith & Fulham

Hammersmith (W6) applications are decided by London Borough of Hammersmith & Fulham; these are its published householder figures for the last four quarters.

Householder applications decided2025 Q2 to 2026 Q1560
Granted552
Refused8
Grantedof 560 decisions · England 90%99%
Decided within 8 weeksof 207, excluding prior approvals90%

Source: Ministry of Housing, Communities and Local Government (PS2 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

Permitted development prior approvals — London Borough of Hammersmith & Fulham

How the larger-home-extension route has fared with London Borough of Hammersmith & Fulham, which decides W6 notifications.

Larger home extension prior approvals — not required2024 Q2 to 2026 Q10
Prior approval granted5
Prior approval refused1

Source: Ministry of Housing, Communities and Local Government (PS1 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

Planning appeals — London Borough of Hammersmith & Fulham

Refusals in W6 can be appealed to the Planning Inspectorate; this is London Borough of Hammersmith & Fulham's householder appeal record.

Householder appeals determined2021–2026105
Allowed44
Allowedof 105 · England 36%42%

Source: Planning Inspectorate appeals casework. Open Government Licence v3.0 Extracted 2026-09-22.

Conservation areas and Article 4 directions — London Borough of Hammersmith & Fulham

Register counts for London Borough of Hammersmith & Fulham. A count describes what the council has published, never a rank against another council.

Conservation areas in the register47

Source: MHCLG Planning Data Platform. Open Government Licence v3.0 Extracted 2026-09-22.

What W6 is built of

Residential building form across Hammersmith (W6), from 388 classified buildings — the fact that decides party walls, side returns and loft headroom before any policy does.

Attached on more than one side80%
Attached on one side17%
Detached3%
Median building footprint63 m²
Addresses per buildingAbove about 2 means flats and maisonettes dominate2.68
Buildings classified388

Source: Ordnance Survey National Geographic Database (derived statistics). Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Extracted 2026-09-22.

  1. Day 0Measured survey of your Hammersmith property — or your existing plans if you have them.
  2. About 7 daysDrawings issued for your approval. Free redraws until you are happy.
  3. SubmissionWe validate against London Borough of Hammersmith & Fulham’s checklist and submit on your behalf.
  4. Council: 8-week targetHouseholder applications carry an 8-week statutory target. London Borough of Hammersmith & Fulham decided 90% of 207 recent householder applications inside it.

Source: Ministry of Housing, Communities and Local Government (PS2 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

FAQ

Hammersmith (W6) — FAQs

Can I dig a basement under my Brackenbury Village terrace?+
It may be possible, but it is a heavier application than an extension. The council's basement policy applies, a basement impact assessment is required, and neighbouring party walls make the structural design demanding. We tell you early whether it is worth pursuing.
Is a Brook Green mansion flat conversion treated like a house extension?+
No. Mansion blocks bring separation, access and party-wall questions that a single house does not, and householder permitted development rights do not apply to flats. We start by checking your lease position and the building's status, then draw to match.
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