What you can build in Ealing without applying for permission — single-storey rear extensions, loft enlargements, side additions — where those rights stop, and how to get the council to put the answer in writing.
Most notifications get through, but far from all. Ealing decided 891 larger-extension notifications in three years: 594 were ruled not required and 54 granted, while 243 were refused outright. It issued 2,048 lawful development certificates over the same period. The borough settled 98.6% of its householder decisions inside eight weeks.
| Ealing, three years to March 2026 | Count | Share |
|---|---|---|
| Larger-extension notifications decided | 891 | — |
| Prior approval not required | 594 | 66.7% |
| Prior approval granted | 54 | 6.1% |
| Refused | 243 | 27.3% |
| Lawful development certificates issued | 2,048 | — |
| Householder decisions | 3,182 | 86.6% approved |
| Decided inside eight weeks | 98.6% | — |
Source: MHCLG District Planning Application Statistics (PS1 and PS2), decisions made in the twelve quarters to March 2026, Open Government Licence v3.0, retrieved 1 September 2026. A ‘prior approval not required’ ruling means the extension may be built as notified. Ealing has uploaded no Article 4 register to the national platform, so any direction affecting an address has to be checked on the council’s own policies map.
In detailSingle-storey rear extension up to 3m deep (attached house) or 4m (detached); side extension up to half the original width; loft conversion up to 40m³ (terraced) or 50m³ (semi-detached); single-storey outbuilding within the curtilage; replacement windows and doors. All subject to material match, eaves setback (20cm), and not facing a highway.
No. The householder permitted development rights attach to houses, Class C3 dwellinghouses, and a flat or maisonette is excluded from them. Almost any external change to a flat in Ealing therefore starts life as a full planning application, and frequently a party wall notice as well.
Yes, and the reduction is severe. Within a conservation area the side extension right disappears altogether, as does the two-storey rear extension right; cladding an elevation stops being permitted; taking down a chimney stack needs consent; and roof enlargement is restricted to the point where most dormers become a planning application. Ealing's own designation list runs to 30 areas, so the first question on any scheme is which side of a boundary line the house sits on.
An LDC is a formal ruling from the council that your proposal needs no planning permission. Getting one is optional and close to essential, because a buyer's conveyancer will come looking for it years later. Ealing recorded 2,048 lawful development certificates across the twelve quarters MHCLG has published up to March 2026 — the third largest count of any London borough, behind Barnet and Redbridge, out of 36,657 recorded capital-wide. The statutory fee for a certificate of proposed use is half the householder application fee, £274 against £548, at the rates from 1 April 2026; the drawings sit on top of that. Contains public sector information licensed under the Open Government Licence v3.0
Yes, always. Permitted development is a planning concept and nothing more; it removes the need to ask the council for permission and removes nothing else. The work still has to satisfy building control on structure, insulation, fire escape, drainage and ventilation, signed off on a separate track. We produce the planning-route evidence and the building regs drawings from one survey.



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Each Ealing postcode district below, what has been built there, and which council would take the application if the permitted development route turns out to be closed. The money column is statute and not our quote: a householder application costs £548, prior approval on a larger rear extension £249, and a certificate £274.
| Postcode | Area | Dominant stock | What it means for a permitted development scheme |
|---|---|---|---|
| NW10 | Willesden / Harlesden / Kensal Green | Modern apartments, post-war estates | An NW10 address in Willesden, Harlesden or Kensal Green can sit in Brent or in Ealing. Whichever it is decides who you would apply to once the permitted development limits are exceeded, and the two councils publish different validation lists. |
| W4 | Chiswick / Bedford Park | Arts & Crafts villas (listed) | Chiswick and Bedford Park share W4 between Hounslow and Ealing. Bedford Park is a conservation area as well, so a W4 scheme is worth checking twice: once for the authority, once for whether the permitted development right survives at all. |
| W3 | Acton | Victorian and Edwardian terraces | W3 covers Acton and crosses into Hounslow along its southern edge. Confirm the authority from the W3 policies map before drawing, because a certificate applied for at the wrong council is simply returned. |
| W5 | Ealing | Edwardian villas, Victorian terraces | W5 covers Ealing only; Ealing Council handles the permitted development scheme. |
| W7 | Hanwell | Edwardian villas, 1930s semi-detached | Hanwell lies wholly within W7 and wholly within Ealing's remit. The Hanwell conservation area covers part of it, and that is where the permitted development question usually turns. |
| W13 | West Ealing | Edwardian terraces | W13 sits entirely with Ealing Council, so West Ealing schemes are judged against Ealing's Local Plan and its own householder design guidance. |
| UB1 | Southall North | Edwardian terraces, post-war flats | Southall North lies inside UB1 with no boundary complication, so Ealing Council handles every UB1 certificate and every UB1 application. |
| UB2 | Southall South | Edwardian terraces, post-war flats | UB2 holds Southall South on its own. One authority, one Local Plan, and the HMO Article 4 direction to check against the specific street. |
Two houses on neighbouring Ealing roads can get different answers, because the pitch of the roof, what the walls are made of and the length of the garden behind each bear directly on whether a scheme stays inside the permitted development limits.
Ealing conservation designations: there are 30 of them, Bedford Park, Acton Green and Hanwell among them, and Ealing Broadway is the one that most often forces a redesign. Designation costs money in a specific and measurable way: it shuts off prior approval, which costs £249 and is determined in 6 weeks, and pushes the same extension onto a householder application at £548 determined in 8 weeks — usually with a heritage statement attached, and often with a different roof. Both figures are England-wide statutory fees as at 1 April 2026, identical in every borough.
What Article 4 removes near Ealing: Article 4 for HMOs in specific streets in Acton, Ealing and Southall. Before pricing a permitted development scheme we check whether the W3 address is inside the mapped area, because Ealing Council draws the Ealing boundary street by street rather than across the whole of Ealing.
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 permitted development scheme in Ealing is scoped against that stock first.
Sources for this Ealing permitted development scheme 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.

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