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Hackney, London

Retrospective planning applications in Hackney

Hackney applies a great many Article 4 directions, and many retrospective cases come from small changes made where permitted development had been withdrawn. The council can grant permission after the work is built. We survey the property, draw it as it stands and prepare the application. Fixed quote after a free constraints check.

Fixed quote after a free constraints check

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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 retrospective planning applications

    Seven 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.

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

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    Pencil resting on a dimensioned technical drawing beside a scale rule

    Hackney guidance that applies to built work

    We found no Hackney rule written for retrospective applications. Officers use the Hackney Local Plan 2033 (LP33), adopted in 2,020, the Residential extensions and alterations SPD and, increasingly, the Retrofit SPD. The extensions SPD sets the design test for rear and roof extensions; the Retrofit SPD covers insulation, windows and materials.

    Hackney's housing mix means many owners hold a share in a house split into flats. A change to the roof or rear can need the other leaseholders to agree, so we ask for the leases early.

    The retrofit guide is why Hackney is different from many boroughs. If you replaced old windows with modern units, added external insulation or changed a roof covering, the council compares the result with what the guide encourages. Work that improves energy performance in a sensitive way is easier to justify than work that does not.

    We read the guide against your as-built drawings and show where the change serves its aims.

    Rows of brick terraced houses and gardens on a residential street

    Local figures for Hackney

    Figures with their unit, period and source
    MeasureValuePeriodSource
    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
    Households living in a house18.8 % of households living in a house or bungalow (detached, semi-detached or terraced)Census 2021nomisweb.co.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
    Lawful development certificate applications (PS1)258 certificates2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.gov.uk
    Conservation areas37 named conservation areas published by the council—planning.data.gov.uk
    Average price, flat524,885 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 Hackney
    Which application your project needsLawful Development Certificate decision: 8 weeks. Prior approval decision: 42 days. Householder decision: 8 weeksYour projectWithin permitted development?Lawful Development CertificatePrior approvalHouseholder applicationYesLarger rear extensionNoABC

    Which application your project needs

    The usual route for a house; flats and listed buildings follow other rules.

    A · Lawful Development Certificate decision
    8 weeks
    B · Prior approval decision
    42 days
    C · Householder decision
    8 weeks

    Article 4 directions across the borough

    Hackney lists 77 Article 4 directions covering 197 areas, with 37 conservation areas. A direction removes permitted development rights for a specified change, such as replacing a front window or altering a roof slope, so work that would be lawful elsewhere needs permission here.

    Dates matter. If the direction was made after the work was finished, the change may have been lawful when done, and the right route is a certificate, not a planning application. We check the dates before you pay a fee.

    It is a common pattern in the borough. A builder says no permission is needed, the work goes ahead, and a neighbour or an officer points out the direction. The remedy is a retrospective application, judged on whether the change harms the character that the direction protects.

    We check the address against the direction map first, so you know whether a direction was in force when the work was done.

    Flats, leases and ownership in Hackney

    Only 18.8 per cent of Hackney households live in a house, and 24.6 per cent own their home. Many retrospective cases therefore concern flats, converted houses and leasehold alterations, where the lease or freeholder's consent is a second hurdle after planning.

    The average flat price in the borough is £524,885, so a sale that stalls over unauthorised work is expensive. A buyer's solicitor will ask for evidence of permission for every alteration, and a retrospective consent solves that question.

    Hackney also has a fair number of live-work units and former commercial buildings turned into homes. If yours is one, tell us which use the council last recorded, because a change from that baseline is part of the story the drawings must tell.

    What the figures say

    The council decided 415 householder applications in its latest year, granted 84.6 per cent and decided 91.3 per cent in time. It also recorded 258 certificates of lawfulness, and granted 15 large extension prior approvals against 1 refusal.

    Hackney also has a long tradition of converted warehouses and workshops, and a mezzanine or roof extension in such a building is judged against its own history. We bring any earlier consents into the statement.

    If your work is older than 10 years, a lawful development certificate in Hackney may be enough. Otherwise a retrospective application takes 8 weeks to determine.

    Fee and what we prepare

    The householder fee is £548 where the property qualifies, and a refusal can be appealed within 12 weeks.

    We provide a measured survey, as-built drawings, a design statement and the submission, with a second MCIAT chartered architectural technologist checking the set. See the Hackney hub for our other services there, and our planning drawings in Hackney for any further proposed work.

    Send us the lease, the dates of the work, the builder's invoices and any email exchange with the council or your managing agent. With those four items we can say at the free check which route fits and what the fixed quote will be.

    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.
    Georgian brick terrace with sash windows, arched fanlight doorways, stone steps and iron railings in London
    The street around you
    Move across the plinth — the blocks rise around the pointer.

    Questions

    Was an Article 4 direction in force when I did the work?

    We check the date of the direction against the date of the work. If the direction came later, the work may have been lawful at the time.

    Does the retrofit guide help my case?

    It can. Work that improves energy performance sensitively is easier to justify, and we cite the guide where it applies.

    How long will the council take?

    The standard period is 8 weeks, and 91.3 per cent of householder cases were decided in time in the latest year.

    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.