The whole spectrum — rear extensions, side returns, wraparounds, double-storey, basement digs. Planning-led design with detailed technical phase, ideal for victorian and Edwardian villas in Ealing central typical of Ealing.
Ealing approved 86.6% of the householder applications it decided in the three years to March 2026 — 2,755 of 3,182 — and settled 98.6% inside the statutory eight weeks, behind only Barking and Dagenham across London. It also issued 2,048 lawful development certificates, so many Ealing extensions never needed permission.
| Measure | Ealing | Outcome |
|---|---|---|
| Householder decisions | 3,182 | 86.6% approved |
| Decided inside eight weeks | 98.6% | 2nd fastest of the 33 boroughs |
| Lawful development certificates issued | 2,048 | — |
| Larger-extension prior approval notifications | 891 | 594 ruled ‘not required’, 54 granted, 243 refused |
| Extension applications in the Datahub | 27,214 | 58% approved |
| Householder appeals decided | 396 | 37.4% allowed, median 71 days |
Sources: rows one to four from MHCLG District Planning Application Statistics (PS1 and PS2), decisions made in the twelve quarters to March 2026, Open Government Licence v3.0. Row five from the Planning London Datahub, retrieved 15 August 2026, which phrase-matches published descriptions and is comparable within Ealing only. Row six from Planning Inspectorate casework decided 2016–2026. A ‘prior approval not required’ ruling means the work may proceed.
For Ealing homeowners in Victorian and Edwardian villas in Ealing central; 1930s semi-detached in Northolt and Hanwell; mansion blocks along main roads; Bedford Park is a listed Arts & Crafts garden suburb, a house extension drawings package is the full measured-survey-to-submission drawing set London Borough of Ealing needs in order to determine an application: existing and proposed plans, elevations and sections at 1:100 and 1:50, a location and site plan, and the supporting statements the case officer asks for.
Prepared and reviewed by the chartered technologist team at Architectural Drawings London — MCIAT chartered, £2m PI insured.Last reviewed 2026-08-03.
The whole spectrum — rear extensions, side returns, wraparounds, double-storey, basement digs. Planning-led design with detailed technical phase, ideal for victorian and Edwardian villas in Ealing central typical of Ealing.
Housing stock in Ealing: Victorian and Edwardian villas in Ealing central; 1930s semi-detached in Northolt and Hanwell; mansion blocks along main roads; Bedford Park is a listed Arts & Crafts garden suburb.
Character: Leafy outer-west London; Bedford Park conservation area has strict heritage controls; rest of borough generally permissive.
Article 4: Article 4 for HMOs in specific streets in Acton, Ealing and Southall.
Measured existing survey, photographic record, Article 4 and conservation check specific to Ealing before we quote.
2–3 design options at concept stage — alternative layouts, glazing, roof forms.
Site location plan, existing and proposed plans, elevations, sections, D&AS where required.
Steel beam, foundation, lintel design. Chartered engineer sign-off.
Party Wall notices where needed; Thames Water Build Over Agreement where within 3m of a public sewer.
Single planning or regs submission.
Planning + building regs + structural.
Listed, conservation, complex sites.
Move the controls for an indicative figure. It anchors your budget — it is not a quote. Every project is priced after a free survey.
Build costs are separate and quoted by your contractor. See our published fees.
Every Ealing postcode district we draw in, the stock that dominates it and the authority that validates a house extension there. Ealing fees below are the statutory England rates for 2026, not house extension estimates.
| Postcode | Area | Dominant stock | What it means for a house extension |
|---|---|---|---|
| UB5 | Northolt | 1930s semi-detached, post-war estates | UB5 covers Northolt only; Ealing Council handles the house extension, and Northolt case officers apply the UB5 conservation-area map. |
| UB6 | Greenford / Perivale | 1930s semi-detached | A house extension at an UB6 address in Greenford / Perivale is determined by Ealing Council under its own Local Plan policies for Greenford / Perivale. |
| NW10 | Willesden / Harlesden / Kensal Green | Modern apartments, post-war estates | Willesden / Harlesden / Kensal Green is split at NW10. Either Brent Council or Ealing Council can determine a house extension here, so the NW10 address is checked against both policies maps first. |
| W4 | Chiswick / Bedford Park | Arts & Crafts villas (listed) | W4 straddles a boundary: Chiswick / Bedford Park addresses fall to Hounslow Council or Ealing Council, so confirm which authority validates the house extension before submitting W4 drawings. |
| W3 | Acton | Victorian and Edwardian terraces | A house extension in Acton may land with Ealing Council or Hounslow Council — W3 crosses the boundary, and the W3 policies map decides it street by street. |
| W5 | Ealing | Edwardian villas, Victorian terraces | W5 covers Ealing only; Ealing Council handles the house extension, and Ealing case officers apply the W5 conservation-area map. |
| W7 | Hanwell | Edwardian villas, 1930s semi-detached | Hanwell sits wholly inside W7, so Ealing Council validates every house extension submitted from an W7 address. |
| W13 | West Ealing | Edwardian terraces | W13 covers West Ealing only; Ealing Council handles the house extension, and West Ealing case officers apply the W13 conservation-area map. |
Roof pitch, wall build-up and plot depth change every few Ealing streets, and each one changes what a house extension can achieve at that address.
Ealing conservation designations: there are 30 across Ealing Council, Hanwell, Ealing Broadway, Pitshanger among them. Designation costs a Ealing owner the permitted-development route: a house extension then needs a £548 householder application over 8 weeks, in place of the £249 prior approval route that takes 6 weeks. Pitshanger is the Ealing designation that most often changes a house extension design.
Ealing and Article 4: Article 4 for HMOs in specific streets in Acton, Ealing and Southall. A house extension planned at a W3 address is checked against that direction first; Ealing Council publishes the Ealing extent, and the W3 line rarely follows the Ealing boundary you would expect.
The building fabric around Ealing: Victorian and Edwardian villas in Ealing central; 1930s semi-detached in Northolt and Hanwell; mansion blocks along main roads; Bedford Park is a listed Arts & Crafts garden suburb. Leafy outer-west London; Bedford Park conservation area has strict heritage controls; rest of borough generally permissive. A house extension in Ealing is scoped against that stock first, because it decides whether the scheme runs as permitted development, a £274 Lawful Development Certificate, or a full £548 application to Ealing Council.
Sources for this Ealing 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.
Of 396 householder appeals decided in Ealing over the window covering appeals decided 2016-2026, Ealing sat close to the London norm, with 37.4% of appeals succeeding against 39.0% city-wide. 148 were allowed and 237 dismissed, with 11 split. Extensions and other alterations to a single home are decided as householder applications, so these 396 cases are the population a refusal in Ealing joins on appeal - not the far larger number that were simply approved.
Half of those Ealing appeals took more than 71 days to decide from the day the appeal started — time added on top of the council's own determination period, which is the argument for getting the application right first. 8.8% of them (35 cases) involved a conservation area, so heritage argument carries real weight in Ealing. 99.7% were decided by written representations rather than a hearing or inquiry, meaning the written case and the drawings were the whole of the evidence.
396 householder appeals decided in Ealing. Source: Planning Inspectorate casework, OGL v3.0.
Direct answers to the questions Ealing homeowners ask every week about house extension drawings.
Start a free quote →Most standard extensions in Ealing fall under Permitted Development — single-storey rear up to 3m (attached) or 4m (detached), side returns up to half the width of the house. However, Ealing has Article 4 Directions that may remove these rights in specific streets, and flats, listed buildings and conservation areas always need full planning. We check PD eligibility before quoting.
Standard permitted development allows single-storey rear extensions up to 3m (attached house) or 4m (detached) in Ealing. Larger extensions up to 6m/8m are allowed under Prior Approval (Class AA). Flats, listed buildings and Article 4 areas in Ealing are excluded from these PD rights.
A Ealing extension has two cost lines: our architectural package (planning, building regulations and structural calculations in one fixed quote) and the build itself, which contractors price per square metre and which moves with access, ground conditions and specification. A side return typically costs less per m² than a double-storey rear. See our fees.
Ealing does not have a borough-specific basement policy beyond the national framework — basement conversions are generally permissible subject to structural, drainage and flood-risk considerations. Thames Water Build Over Agreements apply where you're within 3m of a public sewer.
Most Victorian terraces in Ealing (particularly in Ealing Broadway) benefit from both — a side return extension infills the narrow side passage to create a wider kitchen, a rear extension projects back into the garden. A wraparound combines the two. We recommend the best option at the free site visit.
Ealing's victorian and Edwardian villas in Ealing central terraced and semi-detached stock typically suits rear single-storey extensions (kitchen-diners), side-return infill extensions, or double-storey rear. Wraparound extensions combine both directions for maximum gain. We recommend the most viable option at the free site visit.
We cover all Ealing postcodes — W3, W5, W7, W13, UB1, UB2, UB5, UB6, NW10 — with local surveyors. Survey appointments within 3 working days.
Ealing Council follows the London Plan and its own Local Development Framework. Extensions must match or complement existing materials, respect neighbour amenity and comply with Part L. We include a Pre-Application Advice summary where the planning history is complex.
If your property sits on a boundary, here are the neighbouring options.
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Full architectural technology service for basement digs and cellar conversions in Ealing — structural underpinning design, waterproofing str...
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Measured surveys across Ealing — floor plans, elevations and sections to ±3mm accuracy. Leica Disto laser + BLK360 point-cloud scanning, Aut...
End-to-end Party Wall Act 1996 service for Ealing — Section 1, 3 and 6 notices, schedule of condition surveys, party wall award coordination...
London's most popular loft type — the full-width rear dormer. Planning or Permitted Development route assessed for your Ealing property, bui...
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