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W7 · Hanwell · Ealing

Planning and building regulation drawings in Hanwell (W7)

Hanwell is built mostly from late-Victorian and Edwardian terraces and semi-detached houses, with older historic buildings set on spacious plots around the village green and larger houses in the Golden Manor enclave. Church Road, Boston Road, Cuckoo Avenue and Green Lane are among its streets. For a typical family house the questions are familiar ones: how far a rear extension can go, whether a loft can take a dormer, and whether a side return is worth filling.

MCIAT chartered technologists
London Borough of Ealing granted 88% of 993 householder applications
Drawings in about 7 days

Hanwell's conservation areas follow its green, its river and its canal. The Hanwell Village Green conservation area protects the historic buildings, plots and trees around the green. A separate St Mark's Church and Canal conservation area follows the River Brent and the Grand Union Canal to the south, and the Hanwell Cemeteries conservation area sits on the edge of the district. Inside any of them, conservation-area status takes side extensions, rear extensions of more than one storey and roof enlargements out of permitted development, so the design of those additions needs an application.

Mature trees along several roads and around the green are likely to carry Tree Preservation Orders, and they can decide where an addition can sit and how foundations are handled. Ealing is the council, and its borough-wide Article 4 direction on HMO conversions applies to Hanwell houses, which matters to anyone considering letting a house to three or more unrelated sharers. We check the conservation boundary, the trees and that direction against your address before we draw, so the scheme starts from what can realistically be built.

Planning in Hanwell: what to know before you apply

Householder applications in Hanwell go through Ealing's validation checklist, and a complete drawing set is the first hurdle. Within the village green conservation area, the historic buildings, spacious plots and mature trees around the green are the protected features, and the canal-side area follows the River Brent and the Grand Union Canal. Elsewhere in the district a rear extension or loft may be permitted development within the limits; where it is not, it is assessed on its effect on neighbours and the street. Tree Preservation Orders are worth confirming before a footprint is fixed. The borough-wide HMO Article 4 direction is separate from ordinary householder work. We establish which layers apply to your address first.

Applications are decided by London Borough of Ealing — its planning pages.

Check your route

Does your Hanwell project need planning permission?

Route check · Hanwell (W7)

ProjectProperty

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.

Confirm it with a free appraisal

Hanwell (W7) in numbers

What London Borough of Ealing has decided, and what W7 is built of — the two facts that shape every job here.

Householder planning decisions — London Borough of Ealing

Hanwell (W7) applications are decided by London Borough of Ealing; these are its published householder figures for the last four quarters.

Householder applications decided2025 Q2 to 2026 Q1	993
Granted	871
Refused	122
Grantedof 993 decisions · England 90%	88%
Decided within 8 weeksof 421, excluding prior approvals	97%

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 Ealing

How the larger-home-extension route has fared with London Borough of Ealing, which decides W7 notifications.

Larger home extension prior approvals — not required2024 Q2 to 2026 Q1	384
Prior approval granted	36
Prior approval refused	153
Grantedof 189 determined	19%

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 Ealing

Refusals in W7 can be appealed to the Planning Inspectorate; this is London Borough of Ealing's householder appeal record.

Householder appeals determined2021–2026	204
Allowed	90
Allowedof 204 · England 36%	44%

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

Conservation areas and Article 4 directions — London Borough of Ealing

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

Conservation areas in the register28 dated, 1969–2007	31

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

What W7 is built of

Residential building form across Hanwell (W7), from 410 classified buildings — the fact that decides party walls, side returns and loft headroom before any policy does.

Attached on more than one side	47%
Attached on one side	50%
Detached	3%
Median building footprint	60 m²
Addresses per buildingAbove about 2 means flats and maisonettes dominate	1.33
Buildings classified	410

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.

Day 0Measured survey of your Hanwell property — or your existing plans if you have them.
About 7 daysDrawings issued for your approval. Free redraws until you are happy.
SubmissionWe validate against London Borough of Ealing’s checklist and submit on your behalf.
Council: 8-week targetHouseholder applications carry an 8-week statutory target. London Borough of Ealing decided 97% of 421 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.

Neighbourhoods

Streets and neighbourhoods in W7

Hanwellpredominantly late-Victorian and Edwardian

Nearby

Nearby postcode districts

Hammersmith W6Kensington W8Ealing Broadway W5Maida Vale W9Chiswick W4North Kensington W10Acton W3Notting Hill W11

FAQ

Hanwell (W7) — FAQs

Is my Hanwell house in a conservation area?+

Only if it is within one of the three on record: Hanwell Village Green, St Mark's Church and Canal, or Hanwell Cemeteries. We check your exact address against their boundaries before advising.

Do trees near my garden affect an extension?+

They can. Mature trees on several Hanwell roads and around the green may be protected by Tree Preservation Orders, which can limit where an extension sits and how it is built. We check this at the start.

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