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Redbridge, London

Side return extension drawings in Redbridge

Redbridge writes its side extension limit into its design guide: no wider than half the host width. We draw side return extensions for Redbridge houses from £745 including VAT, with that width, the conservation areas and the party wall shown on the sheets before anything goes to the council.

From £745 (VAT included)

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  • Fixed fees, VAT included

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    Architectural model of a four-storey London stucco townhouse in its terrace, with a portico, area railings, sash windows, a cornice and chimney stacks
    The house as it stands: four storeys over a lower ground floor.Existing Proposed worksAn illustrative model, built for this page.

    How we work on side return extension drawings

    Nine steps from first call to approval.

    The same model cut through the middle: every floor, the stair, the chimney breasts, the new mansard, rear extension and basement in section
    Section through the model: every floor on one datum.

    1. Enquiry and constraints check

      We check the property against conservation areas, listed status, Article 4 directions, tree preservation orders, flood zone and planning history. We choose the right route and send a fixed quote.

    2. Measured survey

      We survey the house on one datum: rooms, levels, boundaries, drains, trees and the neighbours' windows that the 45° and 25° tests depend on.

    3. Design options

      We model the house in Revit and show you options in 3D and plan, with the planning strategy and the precedents in your street.

    4. Design frozen

      You choose an option in writing. Nothing changes after this without your say.

    5. Independent check

      A second chartered technologist checks every sheet against the council's validation checklist and the policy. A senior review signs it off before anything is submitted.

    6. Submission

      We prepare the forms, certificates, fee and documents and submit through the Planning Portal.

    7. Officer liaison

      We answer the planning officer and make any amendments within five working days, at no charge until approval.

    8. Building regulations

      Technical drawings are coordinated with the structural engineer's calculations, the drainage and the planning conditions.

    9. Approval and hand-over

      Building control approval, then a next-steps pack covering the commencement notice, party wall timing and CIL.

    Free redraws until approval. Every drawing set is checked independently, and the checker is never the person who drew it.

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    Finished white-rendered rear house extension with large glazed doors

    The Redbridge rule for side extensions

    The Housing Design Guide SPD sets the test for a single-storey side extension. Its width should be no more than half the host width, and it should not reach beyond the back of the host house unless it is combined with a rear extension. That second clause matters for a side return, because the whole point of one is to fill the gap beside the rear wing.

    The same guide prefers that an infill extension does not project past the rear of the existing rear projection. If your design wants more depth than that, we say so at the start and show you the alternatives, rather than discovering it in an officer's comments.

    The borough's wider framework is the Redbridge Local Plan 2015-2030. The design guide, though, is what an officer holds beside your elevations, so every dimension on our sheets is measured against it and noted where it sits close to the line.

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

    Local figures for Redbridge

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Single-storey side extensions: width no more than half the width of the host house; depth not beyond the host except when combined with a rear extension.half the host width—redbridge.gov.uk, Redbridge Housing Design SPD (Sept 2019), p.15, para 3.4.1
    Households living in a house66.2 % of households living in a house or bungalow (detached, semi-detached or terraced)Census 2021nomisweb.co.uk
    Green Belt share of the council area34 % of council area covered by green-belt polygons—planning.data.gov.uk
    Conservation areas16 named conservation areas published by the council—planning.data.gov.uk
    Listed building entries134 list entries (Historic England, within the LPA boundary)—planning.data.gov.uk
    Householder decisions991 decisions1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications granted82.8 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications decided in time94.7 % decided within 8 weeks or an agreed extended period1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Larger home extension prior approvals granted46 decisions2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.gov.uk
    Larger home extension prior approvals refused93 decisions2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.gov.uk
    Average price, terraced534,863 GBP2026-07publicdata.landregistry.gov.uk
    Householder: alterations/extensions to a single dwellinghouse, from 1 Apr 2026548 GBP—ribblevalley.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 Redbridge

    Householder applications by street in Redbridge

    Streets in Redbridge with the most householder applications, and the share approved
    StreetApplicationsApproved
    Wensleydale Avenue3773%
    Kings Avenue3371%
    Gyllyngdune Gardens3239%
    Malford Grove3171%
    Wanstead Park Avenue2989%
    Broadwalk2791%
    Falmouth Gardens2788%
    Levett Gardens2758%
    Beehive Lane2548%
    Goodmayes Lane2471%
    High View Road2483%
    Woodlands Avenue2486%
    Beattyville Gardens2378%
    Bressey Grove2386%
    Monkhams Avenue2386%
    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). Redbridge guidance: 45 degrees (plan and elevation)AB

    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)
    B · Redbridge guidance
    45 degrees (plan and elevation)

    Houses, gardens and Green Belt in the borough

    Redbridge suits side returns better than most London boroughs. 66.2 per cent of households live in a house, and 57.1 per cent own their home, so a large part of the borough is made up of semi-detached and terraced houses with room beside them.

    Land is a different matter at the edges. About 34 per cent of the council area is covered by Green Belt designation, and a plot near it raises extra questions about openness that we check at the outset.

    A terraced house here averaged £534,863 in the latest Land Registry figures. Spending part of that on a kitchen that spans the full width of the house is a familiar choice in Ilford, Wanstead and Woodford, and the drawings are what turn the idea into something a builder can price.

    Conservation areas and listed buildings

    The council publishes 16 conservation areas and Historic England lists 134 buildings within the borough. Nationally the permitted route closes for side extensions in such places: No side extensions under PD on article 2(3) land (conservation areas etc.).

    So the first job is a boundary check on your actual plot. If the house sits inside a conservation area, the extension needs a householder application, and we prepare it through planning drawings. If it does not, the national limit applies instead: Side extension: single storey, max 4 m high, max half the width of the original house.

    How Redbridge decides householder applications

    In the latest published twelve months the council decided 991 householder applications. It granted 82.8 per cent and decided 94.7 per cent in eight weeks or an agreed extension. That is the borough-wide record for every kind of householder job, not a forecast for your house.

    Larger rear extensions that rely on neighbour consultation did worse. The council granted 46 and refused 93. When a side return is part of a bigger scheme, those refusals are a good reason to draw a full application.

    The council's fee for a householder extension is £548, paid directly to the council.

    Glazing, party walls and what we draw

    Side returns are glazed, and the simple route caps the glass: Windows, roof windows, rooflights and doors in an extension should not exceed 25% of the extension floor area plus the area of openings removed or covered. Heavier glazing needs a calculation, which our SAP calculations service supplies.

    Because the extension sits against the neighbour's wall, a notice is normally needed. A new wall up to the boundary is governed by this: Line-of-junction (new wall) notice at least 1 month before work. Our party wall notices service prepares the paperwork to match the drawings.

    We price side return extension drawings in Redbridge from £745, VAT included. The sheets are plans, elevations and sections, with a location plan and block plan, checked by a second chartered technologist.

    Related pages for Redbridge

    For the council's wider picture, read architectural drawings in Redbridge. If you are weighing a bigger project, see wraparound extension drawings in Redbridge or rear extension drawings in Redbridge.

    Neighbouring councils write different rules: compare side return extension drawings in Waltham Forest, Newham and Barking and Dagenham. The general rules are on the side return extension drawings page.

    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 Redbridge

    Side return extension drawings nearby

    Questions

    How wide can a side extension be in Redbridge?

    The council's Housing Design Guide SPD says no wider than half the host width for a single-storey side extension.

    Does Redbridge have conservation areas that affect side returns?

    Yes, 16 of them. In those areas permitted development for side extensions does not apply, so an application is needed.

    How much do side return extension drawings cost in Redbridge?

    From £745 including VAT. The council's fee of £548 is separate.

    Will a party wall notice be needed?

    Usually, because the extension meets the neighbour's wall. Notice for a new wall up to the line: Line-of-junction (new wall) notice at least 1 month before work.

    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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