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Slate-clad roof extension on a yellow-brick London terraced house
Photograph: Daniel Sikpi

01Ealing, London

Mansard roof drawings for Ealing houses

Ealing's guidance on mansards is blunt, and the short version is mansards usually unacceptable. The first job is therefore a survey of your roofline and its neighbours, and the drawing set follows from £845 including VAT.

From £845 (VAT included)

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    02The brief

    Ealing's position on mansards and extra storeys

    Ealing's residential extensions guidance is specific about roof form. A mansard that changes the slope of the roof will not usually be acceptable, and raising the ridge or adding a storey will not normally be permitted. Front dormers are rarely acceptable either.

    Upper floors of a large yellow-brick Victorian house in London with chimney pots
    Converted loft bedroom with roof windows and a Juliet balcony
    Photograph: Imad Clicks

    03The record

    Local figures for Ealing

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Dormers set at least 0.5 m below ridge, 0.5 m from roof sides and 0.5 m above eaves0.5 m from ridge, sides and eaves mNo periodealing.gov.uk, Ealing SPD 4 Residential Extensions (2004 UDP era, retained as interim guidance), Section 6.0 Roof Extensions, p.17
    Mansards changing roof slope usually unacceptable; extra storeys not normally permitted; front dormers rarely acceptablemansards usually unacceptableNo periodealing.gov.uk, Ealing SPD 4 Residential Extensions (2004 UDP era, retained as interim guidance), Section 6.0, p.17-18
    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.0.5mNo periodealing.gov.uk, SPD 4 Residential Extensions, p.18
    Class B, condition B.2(b)(i)(aa)Class B requires the original eaves to be maintained or reinstated, which a parapet-fronted mansard normally removesNo periodlegislation.gov.uk
    Class AA, para AA.1(c)Class AA additional storeys exclude houses built before 1 Jul 1948 or after 28 Oct 2018No periodlegislation.gov.uk
    Class AA, para AA.1(b)Class AA is not available on article 2(3) landNo periodlegislation.gov.uk
    Householder: alterations/extensions to a single dwellinghouse, from 1 Apr 2026548 GBPNo periodribblevalley.gov.uk
    Party Wall etc. Act 1996 s3(2)(a)Party structure notice at least 2 months before workNo periodlegislation.gov.uk
    Conservation areas31 named conservation areas published by the councilNo periodplanning.data.gov.uk
    Listed building entries309 list entries (Historic England, within the LPA boundary)No periodplanning.data.gov.uk
    Householder decisions946 decisions1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications granted87.2 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Upward home extension prior approvals granted0 decisions2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.gov.uk
    Upward home extension prior approvals refused1 decisions2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.gov.uk

    A blank value means the figure has not been published, not that there are none. Check your own address with the council.

    Ealing5 neighbouring councils
    Councils bordering Ealing

    04The streets

    Householder applications by street in Ealing

    Streets in Ealing with the most householder applications, and the share approved
    StreetApplicationsApproved
    Brentham Way4290%
    Corringway3476%
    Bilton Road2889%
    Norwood Road2872%
    Ashbourne Road2783%
    Fielding Road2689%
    Tentelow Lane2571%
    Brunswick Road24100%
    Ludlow Road2491%
    Meadvale Road2395%
    St Albans Avenue2391%
    Woodfield Road23100%
    Denison Road21100%
    Laughton Road2183%
    Rusthall Avenue2185%

    Counts of householder applications by street; no individual applications are shown. Streets with fewer than five applications are left out.

    GLA Planning London Datahub, householder applications

    05The drawing

    A mansard roof in sectionA, Permitted development and the eaves: Class B requires the original eaves to be maintained or reinstated, which a parapet-fronted mansard normally removes. B, Additional storeys under permitted development: Class AA additional storeys exclude houses built before 1 Jul 1948 or after 28 Oct 2018. C, Fire protection to the stair: 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)ABC

    A mansard roof in section

    A London terrace with a mansard behind the parapet. The lettered marks show the limits the legend gives.

    A Permitted development and the eaves
    Class B requires the original eaves to be maintained or reinstated, which a parapet-fronted mansard normally removes
    B Additional storeys under permitted development
    Class AA additional storeys exclude houses built before 1 Jul 1948 or after 28 Oct 2018
    C Fire protection to the stair
    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)
    The mansard in three dimensions3D
    Scroll the page: the model turns with it.

    06The detail

    What permitted development leaves you

    Permitted development is narrow here too. Class B requires the original eaves to be maintained or reinstated, which a parapet-fronted mansard normally removes. Class AA, the route for an extra storey, limits the age of the house. Class AA additional storeys exclude houses built before 1 Jul 1948 or after 28 Oct 2018.

    Class AA is not available on article 2(3) land, and Ealing has 31 conservation areas. In the latest published year its upward home extension prior approvals show 0 granted and 1 refused.

    A dormer as the alternative

    Where a conventional dormer is the better answer, the council sets its own distances. A dormer should sit at least 0.5m down from the ridge, in from the roof sides and above the eaves, and should not wrap around two slopes. We size a dormer to those figures before drawing anything else.

    A dormer on a semi-detached house still touches the shared roof, so the Party Wall etc. Act 1996 sets the notice: Party structure notice at least 2 months before work.

    Listed houses and the council's record

    Ealing has 309 list entries, and a roof is often the most visible part of a listed house. A mansard on one needs listed building consent as well as planning permission; the consent side is covered under listed building consent drawings in Ealing. A lower floor under the same house is a separate application: basement conversion drawings in Ealing.

    Householder work here runs to 946 decisions in the council's published figures, with 87.2% granted. The council's fee for a house is £548, paid in addition to our drawing fee.

    Planning sheet for a single-storey rear extension: proposed ground floor plan and rear elevation, with the Property Architecture title block
    Sample drawing. Proposed plan and rear elevation from a planning application set, sheet 03 at 1:50.

    07The papers

    What the drawings rest on

    Brick cottage with a tiled roof, chimneys and a front dormer windowLawful development certificates
    Photograph: Tanya Barrow
    Loft floor plan marked up in an independent review, with three critical issues clouded and explained
    Sample drawing. A loft plan with the reviewer’s mark-up: stair pitch, dormer cheeks and roof ventilation.

    08Correspondence

    Questions

    Does Ealing allow mansard roofs?

    Its guidance says mansards that change the roof slope will usually be unacceptable, and that extra storeys are not normally permitted. We look at your street in a free constraints check and tell you before you pay for drawings whether the roofline gives you a case.

    Is a rear dormer a safer choice than a mansard in Ealing?

    A dormer is judged against the council's setback guideline from ridge, sides and eaves. Whether it also meets permitted development depends on the house, and we check that with the survey.

    Can rooflights stand in for a dormer in Ealing?

    The guidance asks rooflights to respect the size and position of the house's windows, and does not encourage several on the front slope. We confirm the position on the survey.

    Rear view of brick terraced houses in London with slate roofs and chimney stacks along the shared roofline

    87.2%

    Householder applications granted, Ealing, 1 July 2025 - 30 June 2026. Source: assets.publishing.service.gov.uk

    Photograph: Ben Hadfield

    09Further reading

    Other services in Ealing

    Mansard roof drawings nearby

    10Sources

    Sources and dates

    Licences

    Kensington street lined with brick townhouses and lit streetlamps beneath an orange dusk sky

    Send us the address of your house.

    We look up the conservation area, listing and Article 4 position, then reply with a fixed fee. A message before 3pm is answered the same working day.

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    Mansard roof drawings in Ealing