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Enfield, London

Double-storey extension drawings in Enfield

Double-storey extension drawings for an Enfield home start at £1,295 including VAT. 37 per cent of the borough is Green Belt and the council has mapped 33 Article 4 direction areas, so the first question is which of those, if any, your house falls under.

From £1,295 (VAT included)

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    Brick house being extended, with a wide new opening supported over the ground floor

    Where Enfield limits a double-storey extension

    The route for a two-storey addition in Enfield depends on the land designations at your address. The council applies its general design tests: a subordinate form, the neighbours' light and outlook, and the character of the street.

    Three layers of land designation decide the route. Green Belt covers 37 per cent of the borough, and an extension there must not be disproportionate to the original house. Article 4 directions cover 33 mapped areas, removing rights that would otherwise apply. And 24 conservation areas remove the right to extend beyond one storey: No rear extension of more than one storey under PD on article 2(3) land.

    Outside those layers, the national limit is the test: Over one storey: max 3 m beyond the original rear wall and not within 7 m of the rear boundary. We check the address against all three before drawing, and we tell you in the quote which route is likely. Where two layers overlap, for example a conservation area inside the Green Belt, the stricter test governs and the design is tighter.

    Finished white-rendered rear house extension with large glazed doors

    Local figures for Enfield

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Green Belt share of the council area37 % of council area covered by green-belt polygons—planning.data.gov.uk
    Article 4 direction areas33 Article 4 direction area polygons published by the council—planning.data.gov.uk
    Conservation areas24 named conservation areas published by the council—planning.data.gov.uk
    Listed building entries301 list entries (Historic England, within the LPA boundary)—planning.data.gov.uk
    Householder decisions934 decisions1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications granted83.4 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications decided in time92.4 % 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)21.7 % 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 Enfield

    Householder applications by street in Enfield

    Streets in Enfield with the most householder applications, and the share approved
    StreetApplicationsApproved
    Lonsdale Drive4385%
    Wynchgate3784%
    Prince George Avenue3583%
    South Lodge Drive3274%
    Old Park Ridings2964%
    The Chine2966%
    Beech Hill Avenue2876%
    Chase Road2856%
    Lakenheath2870%
    Lancaster Avenue2877%
    Winchmore Hill Road2875%
    Conway Road2778%
    Merryhills Drive2785%
    Derwent Road2573%
    Woodland Way2567%
    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)

    Green Belt volume and the original house

    In the Green Belt, the measure is the building as it stood originally. Earlier extensions count against you, so a rear two-storey addition on a house that already has a single-storey kitchen extension may have less room than the plot suggests.

    We measure the original volume from your survey and show how much the proposal adds, so the planning statement can answer the proportionality point directly. If the house has been extended before, we take the earlier work from the survey and the planning history rather than from memory, because the council will do the same. Historic England also lists 301 entries in the borough, which brings a separate listed building consent process for those houses.

    Enfield's householder record

    Enfield decided 934 householder applications in its latest published year and granted 83.4 per cent; 92.4 per cent were decided within eight weeks or an agreed extension.

    Those cover all householder work and say little about a Green Belt site compared with a suburban semi. Domestic gardens make up 21.7 per cent of the borough's land in the Greater London Authority's land-use survey, a borough-wide measure and not a guide to one plot.

    Upstairs windows, roof and escape

    Upper-floor side windows need: Upper-floor side windows obscure-glazed and non-opening below 1.7 m above floor. The new roof: Roof pitch of a 2+ storey enlargement to match the original house so far as practicable. A first-floor bedroom needs: 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.

    Where a new storey sits against a neighbour, foundations and shared walls bring: Adjacent excavation notice at least 1 month before work: within 3 m and deeper than the neighbour's foundations, or within 6 m and cutting a 45° line from their foundations. We prepare these through our party wall notices service.

    What you receive and what it costs

    Drawings start at £1,295, VAT included, fixed before you commit. The set has plans of both floors, elevations, sections and location and block plans, and a second chartered technologist checks every sheet. If the council asks for changes we redraw at no charge until approval. The council's householder fee is £548.

    Our planning drawings page explains what an Enfield submission contains when permitted development does not apply.

    More drawings in Enfield and nearby

    See architectural drawings in Enfield for the borough summary, house extension drawings in Enfield for the other extension shapes, and loft conversion drawings in Enfield for a roof alternative. The national rules are on the double-storey extension drawings hub. Nearby: Barnet, Haringey and Waltham Forest.

    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.
    Two-storey rear extension under construction on a semi-detached house
    Every side considered
    Flick across the turntable to spin it.

    Other services in Enfield

    Double-storey extension drawings nearby

    Questions

    Does the Green Belt stop a two-storey extension in Enfield?

    Not automatically. 37 per cent of the borough is Green Belt, and an extension there must not be disproportionate to the original house, so size matters.

    What is an Article 4 direction and does it affect me?

    It removes some permitted development rights in a mapped area. Enfield has 33 mapped Article 4 direction areas. We check your address.

    Can I use permitted development for a two-storey extension in Enfield?

    Only within: Over one storey: max 3 m beyond the original rear wall and not within 7 m of the rear boundary, and not in a conservation area or an Article 4 area that removes the right.

    How much do double-storey extension drawings cost in Enfield?

    From £1,295 including VAT, fixed up front.

    Sources and dates

    City of London skyline glowing at dusk across the Thames under a dramatic orange sky

    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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