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Ealing, London

Double-storey extension drawings in Ealing

Double-storey extension drawings for an Ealing house start at £1,295 including VAT. Ealing has a design guide written for exactly this job, and it is firm about side extensions: they are not encouraged, and where one is proposed it must keep a set-back, a gap to the boundary and a lower ridge.

From £1,295 (VAT included)

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    Finished white-rendered rear house extension with large glazed doors

    Ealing's double-storey extension rules for side and rear additions

    The council's guidance is SPD 4 - Residential extensions, which supports its local plan. It treats rear and side additions differently. A two-storey rear extension should look subordinate and, where possible, step back from shared boundaries; a scheme that harms a neighbour's light, outlook or privacy will not be permitted.

    For a two-storey side extension the guide is stricter. It asks for: 1 m set-back; 1 m from boundary; 0.5m ridge set-down. Those are the dimensions we put on the first-floor plan and the front elevation, because they decide how much width a semi-detached house can gain.

    The first-floor set-back keeps the original front wall readable, and the ridge set-down stops the new roof reading as one long terrace. On a narrow plot that can take a real share of the width you hoped to gain. We show the compliant version and the version you would prefer, so you can see the trade-off before an officer does. For a rear addition we also draw the neighbouring windows on the plan, because the council's test is the effect on their light, outlook and privacy, and a picture of that is more persuasive than a paragraph.

    Two-storey rear extension under construction on a semi-detached house

    Local figures for Ealing

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Two-storey side extensions are not encouraged; where proposed they should be set back at least one metre from the front wall at first floor, set in at least one metre from the side boundary, and have a ridge at least 0.5m below the main ridge.1 m set-back; 1 m from boundary; 0.5m ridge set-down—ealing.gov.uk, SPD 4 Residential Extensions, p.11-12
    Supplementary planning documentSPD 4 - Residential extensions—ealing.gov.uk
    Conservation areas31 named conservation areas published by the council—planning.data.gov.uk
    Green Belt share of the council area6 % of council area covered by green-belt polygons—planning.data.gov.uk
    Listed building entries309 list entries (Historic England, within the LPA boundary)—planning.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
    Householder applications decided in time95.3 % decided within 8 weeks or an agreed extended period1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Domestic gardens share of land (GLUD 2005)25.6 % of land that is domestic garden (GLUD 2005)2005data.london.gov.uk
    Class A, para A.1(h)Over one storey: max 3 m beyond the original rear wall and not within 7 m of the rear boundary—legislation.gov.uk
    Class A, para A.2(c)No rear extension of more than one storey under PD on article 2(3) land—legislation.gov.uk
    Approved Document B Vol 1, 2019 ed. incl. 2026 amendments, para 2.10Escape window: unobstructed openable area at least 0.33 m², at least 450 mm high and 450 mm wide, bottom of opening no more than 1100 mm above floor—gov.uk

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

    Councils bordering Ealing

    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.Source: GLA Planning London Datahub, householder applications, all years held. Contains public sector information licensed under the Open Government Licence v3.0. Contains OS data © Crown copyright and database right 2026.
    The 45-degree test in planTest used in daylight assessments: 45 degrees (plan and elevation)A

    The 45-degree test in plan

    A line from the middle of the neighbour's nearest window: the extension should stay behind it.

    A · Test used in daylight assessments
    45 degrees (plan and elevation)

    Permitted development and where it ends

    Under the national rules, permitted development reaches: Over one storey: max 3 m beyond the original rear wall and not within 7 m of the rear boundary. Upstairs side windows must be: Upper-floor side windows obscure-glazed and non-opening below 1.7 m above floor. Both limits matter on semis where the garden is long but the house sits close to the side boundary.

    Ealing has 31 conservation areas, and in them the right is removed: No rear extension of more than one storey under PD on article 2(3) land. About 6 per cent of the borough is Green Belt, which adds a proportionality test. We check each of these against your address first.

    How Ealing has been deciding householder applications

    Ealing decided 946 householder applications in its latest published year and granted 87.2 per cent. It decided 95.3 per cent within eight weeks or an agreed extension.

    Domestic gardens cover 25.6 per cent of the borough, the Greater London Authority's land-use survey shows, a measure of how much open land sits behind homes. Historic England lists 309 entries, and a listed house needs consent in addition to planning permission. These are borough-wide figures and not a forecast for one house.

    Fire, structure and neighbours

    A first-floor bedroom needs an escape window: Escape window: unobstructed openable area at least 0.33 m², at least 450 mm high and 450 mm wide, bottom of opening no more than 1100 mm above floor. New walls, roof and floor must meet: 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.

    Because a side extension at first floor sits close to the neighbour, party wall rules usually apply: Party structure notice at least 2 months before work. Our party wall notices service prepares the notices.

    Cost and what you receive

    Drawings start at £1,295, VAT included and fixed up front. You receive plans of both floors, elevations, sections and location and block plans, each checked by a second chartered technologist. The council fee for a householder application is £548, paid to the council. If officers ask for changes we redraw at no charge until approval.

    Not sure whether the work needs an application at all, or which of the council's tests your plot will meet? Ask us before you commit to a layout. Our planning drawings page sets out the route.

    Related drawings and neighbouring boroughs

    For the whole borough see architectural drawings in Ealing. Prefer a single storey? Rear extension drawings in Ealing cover it, and loft conversion drawings in Ealing add rooms without widening the house. The national rules are on the double-storey extension drawings hub. Next door: Hounslow, Brent and Harrow.

    What you receive

    Planning drawing sheet for a rear extension with plans, elevations and sections
    Sample drawing. Planning drawings for a rear extension: plans, elevations and sections on one sheet set.
    House extension under construction with scaffolding, new glazed doors and building materials
    Every side considered
    Flick across the turntable to spin it.

    Other services in Ealing

    Double-storey extension drawings nearby

    Questions

    What does Ealing ask for in a two-storey side extension?

    The council's residential extensions guide does not encourage them. Where one is proposed it asks for: 1 m set-back; 1 m from boundary; 0.5m ridge set-down.

    Can I build a two-storey rear extension in Ealing?

    Yes, if it looks subordinate and does not harm the neighbours' light, outlook or privacy. The council also prefers it set back from shared boundaries where possible.

    Do I need planning permission for a double-storey extension in Ealing?

    Usually. Permitted development stops at: Over one storey: max 3 m beyond the original rear wall and not within 7 m of the rear boundary, and it does not apply in the borough's 31 conservation areas.

    How much do the drawings cost?

    From £1,295 including VAT, fixed in advance.

    Sources and dates

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    Tell us about your property.

    We check the constraints, then send a fixed fee. Messages before 3pm get a reply the same working day.

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