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Hackney, London

Side return extension drawings in Hackney

Hackney's Residential Extension and Alterations SPD gives side extensions two numbers to meet: 500 mm front; 1 m boundary. Our side return extension drawings for Hackney start at £745 including VAT. With 77 Article 4 directions and 37 conservation areas, we also check your street's rights before anything else.

From £745 (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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    Two-storey rear extension under construction on a semi-detached house

    Side return extension drawings in Hackney: the two numbers

    The council's Residential extensions and alterations SPD is unusually clear. A single-storey side extension should be no wider than half the original house, set back from the front building line and held away from the side boundary, and the figures are 500 mm front; 1 m boundary. That is the set-back at the front and the gap to the boundary at the side, written as one rule.

    The gap to the boundary is the figure that surprises owners, because the classic London side return is built right up to the neighbour's wall. In Hackney the council's own guidance asks for space, so a scheme that fills the strip needs a reason on the drawing: a narrow plot, a matching pattern on the terrace, a flank that is already blank. We state the reason, measure the neighbours' additions, and let the officer see the precedent.

    We also draw the alternative. Where the plot is too narrow for a full-length gap, we show a version with a shorter set-in, or a lean-to that steps down towards the boundary, beside the version the owner prefers. Putting both in front of the officer, with the reasoning, usually gets a better conversation than a single scheme that ignores the guidance, and it gives you a fallback if the first reading goes against you.

    House extension under construction with scaffolding, new glazed doors and building materials

    Local figures for Hackney

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Single storey side extensions should be no wider than half the original house, set back at least 500mm from the front building line and at least 1 metre from the side boundary.500 mm front; 1 m boundary—drive.google.com, Residential Extension and Alterations SPD 2025, pp.33-34, Design principles: single storey side extensions
    Article 4 directions77 Article 4 directions published by the council—planning.data.gov.uk
    Article 4 direction areas197 Article 4 direction area polygons published by the council—planning.data.gov.uk
    Conservation areas37 named conservation areas published by the council—planning.data.gov.uk
    Listed building entries555 list entries (Historic England, within the LPA boundary)—planning.data.gov.uk
    Householder decisions415 decisions1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications granted84.6 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications decided in time91.3 % decided within 8 weeks or an agreed extended period1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Larger home extension prior approvals granted15 decisions2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.gov.uk
    Larger home extension prior approvals refused1 decisions2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.gov.uk
    Owner-occupied households24.6 % of households owner-occupied (owned outright or with mortgage/loan)Census 2021nomisweb.co.uk
    Average price, terraced960,633 GBP2026-07publicdata.landregistry.gov.uk
    Class A, para A.2(b)No side extensions under PD on article 2(3) land (conservation areas etc.)—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.

    Councils bordering Hackney

    Householder applications by street in Hackney

    Streets in Hackney with the most householder applications, and the share approved
    StreetApplicationsApproved
    Winston Road5288%
    Osbaldeston Road3969%
    Rushmore Road3783%
    Forburg Road3165%
    Olinda Road3171%
    Durlston Road3089%
    Powerscroft Road3093%
    Brooke Road2874%
    Elderfield Road2580%
    Glyn Road25100%
    Kyverdale Road2576%
    Lavender Grove2477%
    Alkham Road2370%
    Clifden Road2391%
    Culford Road2376%
    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). Hackney 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 · Hackney guidance
    45 degrees (plan and elevation)

    Article 4 directions and conservation areas in Hackney

    Hackney has issued 77 Article 4 directions covering 197 mapped areas, alongside 37 conservation areas and 555 list entries. That is a dense layer of control for a borough this size. A direction can remove the permitted development right to alter the front, the roof or the boundary, even where the side return itself is allowed.

    The national position for conservation areas is blunt: No side extensions under PD on article 2(3) land (conservation areas etc.). So an address inside one needs an application whatever the size. We look up each address on the constraint layers and say which route applies before the fee is agreed.

    Decisions, prior approvals and retrofit

    Hackney decided 415 householder applications in its latest year, granted 84.6 per cent and decided 91.3 per cent on time. For larger home extensions, the council granted 15 and refused only 1, so the prior approval route is rarely closed here.

    The council also publishes a Retrofit SPD. It is aimed at improving existing homes, and a side return is a good moment to follow it: new walls and roof can carry far better insulation than the old, and the drawings can show the thermal line clearly.

    Renters, owners and the Hackney terrace

    Only 24.6 per cent of Hackney households own their home, and 18.8 per cent live in a house. An average terraced house costs £960,633. Those who own a Victorian terrace here are a small group with a lot of value in a narrow plot, and a side return is among the first things many consider.

    If you own a flat in a converted house, the side strip may belong to the freeholder, and your lease may control building. Our location and block plans service marks the red line, and the planning drawings in Hackney page describes a full application.

    Party walls, glazing and the beam

    With the extension held off the boundary as the SPD asks, the party wall picture changes. A wall built close to the line may still need a notice, and the foundations may, depending on the depth. Our party wall notices page sets out how we prepare them.

    The old side wall comes out and a beam goes in. We coordinate the engineer's sizes through structural calculations, and the opening sizes on our elevations match what the engineer designs.

    Price and what you receive

    Hackney side return drawings start at £745 including VAT, fixed before you commit. The set has existing and proposed plans, elevations, a section and location and block plans. The council's fee is separate.

    A second chartered architectural technologist checks every sheet, and we redraw free until approval if Hackney asks for changes. See also rear extension drawings in Hackney and architectural drawings in Hackney.

    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.
    Brick house being extended, with a wide new opening supported over the ground floor
    Every side considered
    Flick across the turntable to spin it.

    Other services in Hackney

    Side return extension drawings nearby

    Questions

    What does Hackney require for a side extension?

    The Residential extensions and alterations SPD gives 500 mm front; 1 m boundary, with a width no more than half the original house.

    Can I build right up to the boundary in Hackney?

    The guidance asks for a gap, so a scheme that fills the strip needs a reason shown on the drawings.

    Is my Hackney street under an Article 4 direction?

    The borough has 77 directions. We look up your address and tell you before you commit to a fee.

    How much are side return extension drawings in Hackney?

    From £745 including VAT, fixed before you commit. The council fee is separate.

    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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