Side-return infill drawings for Ealing terraces — the glazed extension that fills the redundant side alley and opens up the kitchen, drawn to Ealing Council's guidance, delivered in days and revised free until your decision, with a free approval-odds check first.
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.
The side return is the classic terrace fix, and Ealing has the stock for it — the borough is built largely from Victorian and Edwardian terraces, interwar semi-detached houses and converted period flats, and the Victorian and Edwardian versions almost all have an L-shaped back addition with a wasted alley beside it. Fill that alley and the dark galley kitchen becomes a bright, square room the full width of the house. Ealing Council judges the infill against Ealing Local Plan and the Residential Extensions and Alterations SPD, and because it runs along the party boundary, the neighbour relationship is read before the design.
That boundary is where the drawings earn their keep. We set the infill wall on or up to the line, keep the roof — usually a glazed lantern or a shallow pitch tying into the existing back-addition slope — below the neighbour's first-floor windows, and detail the rainwater and party-wall junction so the build is watertight and the Party Wall Act is satisfied. Case officers apply the borough's daylight and outlook tests strictly across tight Victorian plot lines, so we resolve it on the section rather than leave it to the case officer.
Many of Ealing's terraces sit in conservation areas — Bedford Park, Ealing Common, Ealing Green, Hanwell Village Green and Northfields (Lammas Park) among them — where a side extension is no longer permitted development. 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. We confirm the designation before a line is drawn.
Some single-storey side returns in Ealing are permitted development, but the width and boundary make an application more likely than for a straight rear extension. You will normally need to apply to Ealing Council if any of these apply:
We draw the infill wall on the boundary, the glazed roof below the neighbour's windows and the party-wall junction on the page — the details Ealing Council's officers and your neighbour both check — and submit a validation-complete pack, whether that is a lawful development certificate or a full householder application.
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. Side returns hinge on width, roof glazing and the party boundary, so a pack that resolves those details upfront is decided faster and refused less often than a DIY submission.
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 approved side return is a single-storey infill roofed with a glazed lantern or roof light to pull daylight deep into the plan, its flank wall built on the boundary and finished to match the host brick. On the borough's victorian and edwardian terraces, this is frequently the single biggest gain in usable ground-floor space, and where it stays within the width and height limits it can proceed under permitted development or a lawful development certificate.
Roof bulk on paired 1930s houses is a recurring refusal reason. We keep the glazed roof below the neighbour's cill line, set the gutter and the party-wall flashing so water and maintenance are designed in, and — where owners want the full open-plan room — pair the infill with a rear extension as a single wraparound application. That way Ealing Council sees one coherent scheme rather than two overlapping ones.
We draw side-return infills on every terraced street in the borough. A few of the neighbourhoods where Ealing side returns come up most often:
Side return extension drawings for Ealing Broadway's red-brick Victorian and Edwardian terraces around the town centre — width-checked, party-wall detailed and drawn to Ealing Council's guidance.
Side return extension drawings for Hanwell's Edwardian terraces and the Hanwell Village Green conservation area — width-checked, party-wall detailed and drawn to Ealing Council's guidance.
Side return extension drawings for Northfields's Edwardian streets around Lammas Park — width-checked, party-wall detailed and drawn to Ealing Council's guidance.
Side return extension drawings for West Ealing's mixed Victorian terraces and converted flats — width-checked, party-wall detailed and drawn to Ealing Council's guidance.
Side return extension drawings for Greenford's interwar semi-detached estates — width-checked, party-wall detailed and drawn to Ealing Council's guidance.
Side return extension drawings for Perivale's 1930s Metroland semis with hipped roofs — width-checked, party-wall detailed and drawn to Ealing Council's guidance.
Whether a side return in Ealing needs permission comes down to width, storeys and whether the street is designated. This is how the cases compare.
| Side return type | Permitted development? | What it gains | What Ealing Council checks |
|---|---|---|---|
| Single-storey infill, within limits | Often yes, if under half the house width | Full-width kitchen-diner | Width, 4m height, roof glazing |
| Single-storey, over half width | No — full application | Wider room, more light | Boundary treatment, neighbour amenity |
| Two-storey side return | No — full application | Room above as well as below | Bulk, overlooking, terrace rhythm |
| Wraparound (side + rear) | No — full application | L-shaped open-plan ground floor | Combined footprint, garden retained |
In conservation areas such as Bedford Park and Ealing Common, side extensions are not permitted development and always need a full application.
A fixed process built around how Ealing Council validates and decides side-return applications — most drawings are submission-ready within seven days of survey.
Send us your Ealing postcode and terrace type. We confirm your conservation and Article 4 status, whether the infill stays within the side-extension width limit, and score your odds against live Ealing Council decisions.
We measure the side alley, the back-addition wall, floor and eaves levels and the neighbour's window heights — the numbers the width limit, roof pitch and party-wall detailing depend on.
Chartered designers develop the infill and its glazed roof to your brief, drawn inside the permitted-development limits or to Ealing Council's extension guidance, with the boundary and party-wall junction detailed.
We submit the certificate or application, manage validation and case-officer queries, and revise the drawings free until Ealing Council issues its decision.
Sometimes not. A single-storey side-return infill can be permitted development if it is no wider than half the original house, no higher than 4 metres, and the property is not on designated land. In Ealing you will need a full application to Ealing Council for anything wider or taller, for a two-storey side return, and for any side extension in a conservation area such as Bedford Park and Ealing Common, where those rights are removed.
It is an infill that fills the narrow open alley running alongside the rear back-addition of a Victorian or Edwardian terrace — the strip of ground that is usually too small to use. Building over it squares off the ground floor, so a cramped galley kitchen becomes a full-width room. Ealing's period terraces are ideally suited to it, which is why the side return is one of the borough's most common extensions. Ealing Council is the decision-maker.
Almost always. A side return is built on or up to the boundary with your neighbour, so the Party Wall etc. Act applies and you must serve notice before work starts — this is entirely separate from Ealing Council's planning decision. We detail the party-wall junction on the drawings and flag the notice early so a surveyor can be appointed without delaying the build.
Yes, and it is common — the combined L-shape is a wraparound extension. Once the side infill joins a rear projection beyond the permitted-development depth, the whole thing needs a full householder application to Ealing Council rather than qualifying as permitted development. We draw it as one coherent scheme so the council assesses a single footprint, which reads more clearly than two overlapping proposals.
A householder planning application in Ealing runs to a statutory eight-week target, and a lawful development certificate to eight weeks as well, though an incomplete pack can stall at validation. Because a side return involves the boundary and roof glazing, a complete, well-detailed submission matters — we prepare it validation-complete and manage officer queries to keep the decision on track. Ealing Council is the decision-maker.
We price each Ealing side return individually, because alley width and roof form vary house to house, and send a fixed, no-obligation quote within one working day. It covers the full drawing pack with free revisions until Ealing Council approves, and we confirm at the outset whether your infill is permitted development or needs an application. Call 020 7864 7245 to start.
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