Mansard drawings for Ealing terraces — the rebuilt roof with a steep, near-vertical rear slope that adds a full storey of loft, drawn to Ealing Council's roofline and streetscape rules, 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 mansard is the maximum-volume loft, and Ealing's stock is where it belongs — the borough runs to Victorian and Edwardian terraces, interwar semi-detached houses and converted period flats, and on a period terrace a mansard rebuilds the roof at roughly seventy degrees to create almost a full new floor rather than the part-height room a dormer returns. Ealing Council assesses it against Ealing Local Plan and the Residential Extensions and Alterations SPD, and because the whole roof changes shape the test is the street: whether the new profile continues the terrace or breaks it.
That is what the drawings have to settle. We set the mansard behind the original parapet or eaves, hold it to the ridge height of neighbouring mansards where the terrace already has them, and detail the slate face, the dormer windows within it and the party walls to both sides so the addition reads as part of the row. Case officers apply the borough's daylight and outlook tests strictly across tight Victorian plot lines, and on a roof this prominent that is the argument that has to be won on the page.
Much of Ealing's terraced stock is designated — Bedford Park, Ealing Common, Ealing Green, Hanwell Village Green and Northfields (Lammas Park) among the areas — and there a mansard is judged on whether it restores or respects the historic roofline. 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. Some terraces already have a consistent mansard line an addition can follow; others do not, and we establish which before drawing.
A mansard in Ealing always needs a full application to Ealing Council — rebuilding the roof puts it well outside permitted development. These are the points the council weighs:
We draw the new roof behind the parapet, the slope and ridge matched to the terrace, the slate face and dormer windows, and the party walls to both neighbours — the roofline and streetscape relationships Ealing Council's officers check first — and submit a validation-complete 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. A mansard is decided on roofline and streetscape, so a scheme drawn to continue the terrace is cleared faster and refused less often than one that fights it.
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 mansard that goes through is the one that disappears into the row: set behind the parapet, its ridge matched to neighbouring mansards, the front slope in natural slate with traditional dormer windows, and the whole storey reading as though the terrace was always that height. On the borough's victorian and edwardian terraces, this is the single biggest volume the roof can give — close to a full floor.
Roof bulk on paired 1930s houses is a recurring refusal reason. We follow any established mansard line on the terrace, keep the slope and materials traditional, and where a row has none yet, draw a design that could set the pattern rather than break it — the argument Ealing Council needs to grant on a roof this visible.
We draw mansard roofs on the period-terrace streets across the borough. A few of the neighbourhoods where Ealing mansards come up most often:
Mansard loft drawings for Ealing Broadway's red-brick Victorian and Edwardian terraces around the town centre — roofline-matched, slate-detailed and drawn to Ealing Council's guidance.
Mansard loft drawings for Hanwell's Edwardian terraces and the Hanwell Village Green conservation area — roofline-matched, slate-detailed and drawn to Ealing Council's guidance.
Mansard loft drawings for Northfields's Edwardian streets around Lammas Park — roofline-matched, slate-detailed and drawn to Ealing Council's guidance.
Mansard loft drawings for West Ealing's mixed Victorian terraces and converted flats — roofline-matched, slate-detailed and drawn to Ealing Council's guidance.
Mansard loft drawings for Greenford's interwar semi-detached estates — roofline-matched, slate-detailed and drawn to Ealing Council's guidance.
Mansard loft drawings for Perivale's 1930s Metroland semis with hipped roofs — roofline-matched, slate-detailed and drawn to Ealing Council's guidance.
A mansard wins the most space of any loft but asks the most of the planning case. This is how it compares in Ealing.
| Loft type | Planning route | Space gained | What Ealing Council checks |
|---|---|---|---|
| Mansard | Always a full application | Close to a full extra storey | Roofline, streetscape, terrace match |
| Rear dormer | Often permitted development | A room across the back slope | Volume and eaves set-back |
| Hip-to-gable | Full application | Full width where the roof is hipped | Balance with the paired neighbour |
| Rooflights only | Usually permitted development | Light and headroom, no new shape | Rooflights within the existing slope |
In conservation areas such as Bedford Park and Ealing Common, a mansard is judged on how it sits within the protected roofline of the terrace.
A fixed process built around how Ealing Council validates and decides mansard 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, check whether the row already has a mansard line to follow, and score your odds against live Ealing Council decisions.
We measure the parapet, ridge and party walls, and the roofline of the neighbouring houses — the numbers the new slope, its height and the terrace match depend on.
Chartered designers develop the rebuilt roof to your brief, drawn to Ealing Council's roof-alteration and conservation guidance with the slope, slate face, dormers and party walls detailed on the page.
We submit the householder application, manage validation and case-officer queries, and revise the drawings free until Ealing Council issues its decision.
Always. A mansard rebuilds the roof into a steep rear slope with a flat top, and that wholesale change of roof shape is well outside permitted development — so it needs a full householder application to Ealing Council on every street, designated or not. On a terrace in a conservation area such as Bedford Park and Ealing Common the roofline is protected, so the design is scrutinised more closely still.
It is a rebuilt roof with a steep, near-vertical rear slope and a small flat top, which creates almost a full extra storey inside — far more than a dormer returns. Ealing's period terraces are the classic mansard candidates, and where a row already carries mansards a new one that matches the line is the most likely of all lofts to be approved despite being the largest. Ealing Council is the decision-maker.
Because it reshapes the whole roof rather than adding a box to it. The steep slope pushes the walls out almost to vertical and the flat top lifts the ceiling, so the usable floor runs nearly the full footprint of the house at head height — close to a complete storey. That is why, in Ealing, a mansard is chosen when a dormer or hip-to-gable will not give enough room. Ealing Council is the decision-maker.
It can, but the case is harder. Where a terrace already has a consistent mansard line, matching it is straightforward; on an unbroken row, Ealing Council weighs whether your mansard would break the skyline or could set an acceptable pattern for the street. We draw the design to sit within the terrace and make that argument on the elevations rather than leave it to chance.
Almost certainly, on both sides. A mansard rebuilds the roof up to and across the party walls with the neighbours either side, so the Party Wall etc. Act applies to each and notice must be served before work starts — separately from Ealing Council's planning decision. We detail both party walls on the drawings and flag the notices early so surveyors can be appointed without holding up the build.
We price each Ealing mansard individually, because the terrace, the roofline match and the party-wall detailing vary street to street, 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 the roofline case at the outset. Call 020 7864 7245 to start.
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