Ealing, London
Dormer loft conversion drawings in Ealing
Dormer loft conversion drawings for an Ealing house start at £695 including VAT. Ealing's residential extensions guidance gives a clear, three-way margin for a dormer: 0.5m below the ridge, in from the roof edges and above the eaves.
From £695 (VAT included)
- MCIAT chartered
- £2m PI insured
- LABC Partnered
- Fixed fees, VAT included
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Ealing's three margins for a dormer
Ealing's SPD 4 - Residential extensions states the dormer test as a margin of 0.5m on three sides. The dormer should sit at least that far down from the ridge, that far in from the roof edges and that far above the eaves. It also says a dormer should not wrap around two roof slopes and should not exceed the ridge.
The same guidance adds that dormer windows are rarely acceptable on front roof slopes. So the standard Ealing dormer is a rear box, held inside a frame of original roof on three sides.
We draw the frame first and the room second. On a modest semi the frame takes up part of the slope, so an Ealing dormer can come out smaller than the permitted development volume would allow. The benefit is that the drawing meets the council's own test from the first submission, and the officer can check each margin on the section without asking for a revision.

Local figures for Ealing
| Measure | Value | Period | Source |
|---|---|---|---|
| Dormers should sit at least 0.5m down from the ridge, 0.5m in from the roof edges and 0.5m above the eaves, and should not wrap around two roof slopes or exceed the ridge. | 0.5m | — | ealing.gov.uk, SPD 4 Residential Extensions, p.18 |
| Conservation areas | 31 named conservation areas published by the council | — | planning.data.gov.uk |
| Listed building entries | 309 list entries (Historic England, within the LPA boundary) | — | planning.data.gov.uk |
| Householder decisions | 946 decisions | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| Householder applications granted | 87.2 % | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| Householder applications decided in time | 95.3 % decided within 8 weeks or an agreed extended period | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| Green Belt share of the council area | 6 % of council area covered by green-belt polygons | — | planning.data.gov.uk |
| GPDO 2015 Sch 2 Pt 1 Class B, para B.1(d) | 40 m³ (terrace house) / 50 m³ (any other house) additional roof volume | — | legislation.gov.uk |
| Class B, para B.1(c) | No enlargement beyond the plane of a roof slope that forms the principal elevation and fronts a highway | — | legislation.gov.uk |
| Class B, para B.1(f) | Class B roof enlargements are not permitted development on article 2(3) land | — | legislation.gov.uk |
A blank value means the figure has not been published, not that there are none. Check your own address with the council.
Householder applications by street in Ealing
| Street | Applications | Approved |
|---|---|---|
| Brentham Way | 42 | 90% |
| Corringway | 34 | 76% |
| Bilton Road | 28 | 89% |
| Norwood Road | 28 | 72% |
| Ashbourne Road | 27 | 83% |
| Fielding Road | 26 | 89% |
| Tentelow Lane | 25 | 71% |
| Brunswick Road | 24 | 100% |
| Ludlow Road | 24 | 91% |
| Meadvale Road | 23 | 95% |
| St Albans Avenue | 23 | 91% |
| Woodfield Road | 23 | 100% |
| Denison Road | 21 | 100% |
| Laughton Road | 21 | 83% |
| Rusthall Avenue | 21 | 85% |
Loft enlargement in section: the permitted development limits
A dormer on the rear slope, with the limits that decide whether it needs planning permission.
- A · Extra roof volume allowed
- 40 m³ (terrace house) / 50 m³ (any other house) additional roof volume
- B · Set-back from the eaves
- Original eaves maintained; enlargement set at least 0.2 m from the eaves measured up the roof slope, so far as practicable (not required for hip-to-gable or roofs joining a rear/side extension)
- C · Height limit
- No part higher than the highest part of the existing roof
Conservation areas and listed houses in Ealing
Ealing has 31 conservation areas and Historic England records 309 listed entries in the borough. Inside a conservation area the national right to enlarge a roof is removed, so a dormer needs planning permission.
A listed house needs listed building consent on top. About 6 per cent of the borough is green belt, which matters for outlying houses more than for houses elsewhere.
Where the house keeps its rights, the volume allowance is 40 m³ (terrace house) / 50 m³ (any other house) additional roof volume. The dormer must stay off a slope facing the highway. We check the address against all of these before quoting.
Ealing householder decisions
Ealing decided 946 householder applications in its latest published year and granted 87.2 per cent. 95.3 per cent were decided within the statutory period or an agreed extension.
Those numbers cover every kind of householder project and say nothing about your roof. We use them to plan timing. A builder booked early costs money if the application runs on, so we plan the start date after the likely decision.
A design that stays within permitted development avoids the wait entirely, and a Lawful Development Certificate can prove it in writing. We tell you which route applies once we have seen the house.
Finish matters too. Under permitted development the exterior materials must be Exterior materials similar in appearance to the existing house. The roof over the dormer has an energy target as well: New elements in existing dwellings, limiting U-values W/(m²·K): roof 0.15, wall 0.18, floor 0.18, windows 1.4 (or WER Band B), doors 1.4. Deep insulation lifts the dormer, and with a margin to hold at the ridge, the extra thickness can decide how tall the room can be, so we put the build-up on the section before fixing the dormer height.
What Ealing dormer loft conversion drawings include
The set shows existing and proposed floor plans, the stair, the dormer in section with its build-up, and each elevation, together with location and block plans. The three margins are dimensioned on the section so the officer can check them at a glance.
The stair follows the loft rule in the building regulations: Loft conversions where 2.0 m cannot be achieved: 1.9 m at the centre of the stair, 1.8 m at the side (half width). The new storey needs a protected escape route: New storey above 4.5 m by loft conversion: protect the full escape route with fire-resisting doors (min E 20) and partitions (min REI 30). Both appear on the plans and in the specification. Under permitted development, side windows in the cheek must be Upper-floor side windows obscure-glazed and non-opening below 1.7 m above floor.
The price is £695 including VAT, fixed before you commit. A second MCIAT chartered architectural technologist checks every sheet, and we redraw at no charge if the council asks for changes.
Other roof drawings in Ealing and the boroughs near it
If the roof is too small for these margins, Velux loft conversion drawings in Ealing may suit. The general route is on the loft conversion drawings in Ealing page. A rear addition at the same time is covered by rear extension drawings in Ealing.
Neighbouring councils measure differently: dormer loft conversion drawings in Brent, in Hounslow and in Harrow. The overview is architectural drawings in Ealing, and the national rules are on the dormer loft conversion drawings hub.
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Other services in Ealing
Questions
How far from the ridge must an Ealing dormer sit?
Ealing's residential extensions SPD says at least 0.5m down from the ridge, in from the roof edges and above the eaves.
Can I build a wrap-around dormer in Ealing?
The guidance says a dormer should not wrap around two roof slopes. A single rear dormer is the standard design.
Does Ealing accept front dormers?
Dormer windows are rarely acceptable on front roof slopes, according to the council's guidance.
What do dormer loft conversion drawings cost in Ealing?
From £695 including VAT, fixed up front. Council fees are separate.
Sources and dates
- ealing.gov.uk, retrieved
- planning.data.gov.uk, retrieved
- planning.data.gov.uk, retrieved
- assets.publishing.service.gov.uk, retrieved
- planning.data.gov.uk, retrieved
- legislation.gov.uk, retrieved
- ealing.gov.uk, retrieved
- gov.uk, retrieved
- gov.uk, retrieved
- gov.uk, retrieved
- Contains public sector information licensed under the Open Government Licence v3.0.
- Contains OS data © Crown copyright and database right 2026.
- Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
- Contains Historic England data © Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026.

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