Annexe and granny-flat drawings for Ealing homes — designed to stay ancillary to the main house rather than become a separate dwelling, drawn to Ealing Council's policies, delivered in days and revised free until your decision.
Ealing Council granted 85% of the householder planning decisions it made in its latest published year — 2 points below the 87% England-wide householder average. Case officers apply the borough's daylight and outlook tests strictly across tight Victorian plot lines, which is where a policy-literate drawing pack earns its keep. Its dominant Victorian (1837–1901), Edwardian (1901–1910) and interwar (1918–1939) housing stock sets the design brief on most streets.
Class A and Class B set the thresholds — a rear dormer to 40m³ on a terrace or 50m³ on a semi or detached, and a single-storey rear extension to 3m on a terrace or 4m on a detached house — beyond which Ealing Council needs a full application. Ealing carries at least one Article 4 direction, and conservation areas including Bedford Park, Ealing Common and Ealing Green remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Ealing is determined against an 8-week statutory target.
Ealing Broadway (red-brick Victorian and Edwardian terraces around the town centre), Hanwell (Edwardian terraces and the Hanwell Village Green conservation area), Northfields (Edwardian streets around Lammas Park), West Ealing (mixed Victorian terraces and converted flats), Greenford (interwar semi-detached estates) and Perivale (1930s Metroland semis with hipped roofs) — these are the Ealing pockets our drawings cover most. Heritage designations here include Bedford Park, Ealing Common, Ealing Green, Hanwell Village Green and Northfields (Lammas Park). Ealing Council weighs each proposal against Ealing Local Plan and the Residential Extensions and Alterations SPD, where roof bulk on paired 1930s houses is a recurring refusal reason. Converted terraces are common across West Ealing and Hanwell, and flats and maisonettes have no householder permitted-development rights.. On roofs the borough is London butterfly / valley roofs on the terraces and hipped roofs on the 1930s semis, over Victorian and Edwardian terraces, interwar semi-detached houses and converted period flats.
Councils do not decide annexes on square metres. They decide whether, once built, the accommodation forms part of one planning unit with the main house or a second one beside it. Ealing Council looks at whether the garden is shared or divided, whether the annexe has its own street access and address, whether the occupier could live there entirely independently, and whether the two households would function as one. That is the whole case, and it is made or lost on the layout.
Ealing is largely Victorian and Edwardian terraces, interwar semi-detached houses and converted period flats, which shapes the realistic options: converting part of the existing house, extending it, or building a detached unit in the garden. A detached annexe can sometimes sit under Class E as an outbuilding incidental to the enjoyment of the dwellinghouse — but sleeping accommodation is generally not "incidental", so a garden annexe with a bedroom usually needs its own permission rather than relying on outbuilding rights.
In Ealing's conservation areas — including Bedford Park and Ealing Common — a garden building is also judged on its effect on the character of the area, which limits height and footprint before the use question is reached. Bedford Park — shared with Hounslow — carries a long-established Article 4 direction, and several other Ealing conservation areas remove permitted-development rights, so PD can never be assumed on those streets.
An annexe almost always needs an application to Ealing Council. Expect one where any of these apply:
We plan the annexe so its relationship to the main house is visible on the page — shared garden, connected access, a layout that reads as one household — and set out the case Ealing Council has to test, rather than leaving the officer to assume the worst.
Below is Ealing Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Ealing grants around the London average of householder applications, with roof bulk on paired 1930s houses and neighbour daylight across narrow plots the most common sticking points. Annexe applications are decided on use as much as design, so the supporting case matters as much as the elevations.
Source: MHCLG planning application statistics (householder decisions, rolling year). Compare every borough on our London approval-rate league table.
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Across Ealing Broadway, Hanwell and Northfields, the annexes that succeed keep one shared garden, take access past the main house rather than from the street, and are modest against the host building — single storey where the plot is overlooked, and set back from boundaries. On victorian and edwardian terraces, converting an integral garage or a rear ground floor is often approved more readily than a detached garden unit, because the ancillary relationship is self-evident.
Case officers apply the borough's daylight and outlook tests strictly across tight Victorian plot lines. Where Ealing Council grants permission, it commonly attaches a condition tying occupation of the annexe to the main dwelling. That condition is not a problem to be avoided — it is usually the mechanism that makes approval possible, and we draft the application on that basis rather than pretending the annexe is something it is not.
We draw annexes across Ealing. A few of the areas where multigenerational schemes come up most often:
Annexe and granny-flat drawings for Ealing Broadway — red-brick Victorian and Edwardian terraces around the town centre — planned to stay ancillary and drawn to Ealing Council's policies.
Annexe and granny-flat drawings for Hanwell — Edwardian terraces and the Hanwell Village Green conservation area — planned to stay ancillary and drawn to Ealing Council's policies.
Annexe and granny-flat drawings for Northfields — Edwardian streets around Lammas Park — planned to stay ancillary and drawn to Ealing Council's policies.
Annexe and granny-flat drawings for West Ealing — mixed Victorian terraces and converted flats — planned to stay ancillary and drawn to Ealing Council's policies.
Annexe and granny-flat drawings for Greenford — interwar semi-detached estates — planned to stay ancillary and drawn to Ealing Council's policies.
Annexe and granny-flat drawings for Perivale — 1930s Metroland semis with hipped roofs — planned to stay ancillary and drawn to Ealing Council's policies.
Three similar buildings, three different consents. This is what separates them.
| What you build | Planning status | Key test | What Ealing Council checks |
|---|---|---|---|
| Garden room, no sleeping space | Often Class E permitted development | Incidental to the house | Height, footprint, boundary position |
| Annexe used by the household | Full application, usually with a tie condition | Ancillary use | Shared garden and access, layout |
| Self-contained unit, own access | New dwelling — full application | Separate planning unit | Policy on new homes, amenity, parking |
| Converted garage or ground floor | Often permitted, use still assessed | Whether use changes | Independence of the accommodation |
| Annexe on designated land | Full application | Designation | Character and appearance |
The ancillary/separate-dwelling distinction comes from section 55 of the Town and Country Planning Act 1990; outbuilding limits from the GPDO 2015, Schedule 2, Part 1, Class E.
A fixed process built around how Ealing Council tests the use question as well as the design.
Tell us who the annexe is for and where it would sit on the plot. We confirm designation status and tell you honestly whether the scheme reads as ancillary or as a separate dwelling in Ealing.
We measure the plot, the existing house and the access route, so the shared-garden and shared-access case can be drawn rather than asserted.
Chartered designers develop the annexe to your brief, with the layout, access and garden relationship arranged to support the ancillary case under Ealing Council's policies.
We submit the application with a supporting statement on use, manage validation and case-officer queries, and revise free until Ealing Council decides.
Almost always. Sleeping accommodation is generally not "incidental" to the enjoyment of a house, so it falls outside the outbuilding permitted-development right, and any annexe that could function independently raises a change-of-use question under section 55. In Ealing we prepare a full application to Ealing Council and make the ancillary case explicitly rather than hoping it is not asked.
A shared garden rather than a divided one, access through the main property rather than a separate street entrance, occupation by a member of the same household, and a physical and functional relationship with the main house. Ealing Council weighs those together — no single feature decides it, but a separate front door and a fenced-off garden together usually settle it against you.
Yes, subject to permission. A detached garden annexe is assessed on its scale against the plot, its effect on neighbours and the character of the area, and then on the use question. Keeping it single storey, set in from boundaries and served off the shared garden gives it the best prospect in Ealing, particularly near designated areas such as Bedford Park and Ealing Common. Ealing Council is the decision-maker.
Commonly, yes — a condition tying occupation of the annexe to the main dwelling, so it cannot be sold or let separately. That is normally what makes approval possible, because it removes the concern that a new independent home is being created without going through housing policy. The condition runs with the land, so it matters at resale, and we explain the implications before you commit. This applies to your Ealing address specifically. Ealing Council is the decision-maker.
Yes. A new annexe is new habitable accommodation, so structure, fire escape, insulation and ventilation all apply, and a detached annexe close to a boundary raises fire-spread requirements as well. Planning and building control are separate consents with separate submissions — we prepare both so the approved design is the one that can actually be built. This applies to your Ealing address specifically. Ealing Council is the decision-maker.
A householder application runs to an eight-week statutory target; where the council treats the annexe as creating a new unit it becomes a minor application with a thirteen-week target instead. Which route applies depends on how the use is characterised, which is precisely why the ancillary case is worth making properly at the outset. This applies to your Ealing address specifically. Ealing Council is the decision-maker.
We quote each Ealing annexe individually, because plot, access and whether you are converting or building new all change the work, and send a fixed, no-obligation quote within one working day. It covers the full drawing pack and supporting statement, with free revisions until Ealing Council approves. Call 020 7864 7245 to start.
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