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Hackney, London

Flat conversion drawings in Hackney

Hackney supports converting houses to flats, but only if one of the flats is a family home on the ground floor. Our flat conversion drawings in Hackney are built around that test, from £1,195 including VAT, by MCIAT chartered architectural technologists.

From £1,195 (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 flat conversion drawings

    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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    Rear view of brick terraced houses in London with slate roofs and chimney stacks along the shared roofline

    Hackney's family-unit test for house conversions

    Hackney's Hackney Local Plan 2033 (LP33) deals with this in its housing policy for conversions. It supports house-to-flat schemes with adequate access and self-contained units, and it asks for 1 x 3-bed at ground floor. In the Stamford Hill area the bar rises to a bigger family unit of four bedrooms or more (the conversions policy in the plan).

    This is a specific conversion rule, and it changes the plan before anything else does. A ground-floor family flat takes the garden, the rear rooms and most of the floor area, which leaves the upper flat compact. We draw that split first, test the upper flat against the space standard, and only then add the shared entrance and storage.

    Hackney also adopted two documents last year, the Residential extensions and alterations SPD and the Retrofit SPD. Retrofit measures, such as insulation and new windows, sit next to your conversion on the same elevations.

    Upper floors of a large yellow-brick Victorian house in London with chimney pots

    Local figures for Hackney

    Figures with their unit, period and source
    MeasureValuePeriodSource
    House-to-flat conversions are supported with adequate access and self-contained units, and must provide at least one 3+ bedroom family unit at ground floor (4+ bed in the Stamford Hill AAP area).1 x 3-bed at ground floor—drive.google.com, Local Plan 2033, Policy LP19, pp.99-100, LP19 A-B
    Households living in a house18.8 % of households living in a house or bungalow (detached, semi-detached or terraced)Census 2021nomisweb.co.uk
    Owner-occupied households24.6 % of households owner-occupied (owned outright or with mortgage/loan)Census 2021nomisweb.co.uk
    Minor application decisions689 decisions1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Minor applications granted81.6 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Minor applications decided in time87.4 % decided within 8 weeks or an agreed extended period1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Borough CIL residential rate£190/m² (Zone A); £25/m² (Zone B); £55/m² (Zone C); £0/m² (Zone D)schedule rate (approved 25 February 2015, effective 1 April 2015)drive.google.com
    Mayoral CIL charging band2 MCIL2 charging band (1-3)—london.gov.uk
    Mayoral CIL rate (indexed)72.73 £/m² (indexed, permissions granted in 2026)—london.gov.uk
    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
    Heritage at Risk entries40 Heritage at Risk Register entries within the LPA boundary (Historic England)—planning.data.gov.uk
    Average price, terraced960,633 GBP2026-07publicdata.landregistry.gov.uk
    Average price, flat524,885 GBP2026-07publicdata.landregistry.gov.uk
    Change of use of a building to one or more separate dwellinghouses, not more than 10: per dwellinghouse, from 1 Apr 2026610 GBP per dwelling—ribblevalley.gov.uk
    Local planHackney Local Plan 2033 (LP33)—hackney.gov.uk
    Supplementary planning documentResidential extensions and alterations SPD2025hackney.gov.uk
    Supplementary planning documentRetrofit SPD2025hackney.gov.uk
    Households106,081Census 2021 (21 March 2021)nomisweb.co.uk
    Lawful development certificate applications (PS1)258 certificates2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.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
    Building regulations, layer by layerPart A: structure: Approved Document A: Structure, 2004 edition incorporating 2004, 2010 and 2013 amendments. Part B: fire safety: All dwellings: fire detection and alarm system minimum Grade D2 Category LD3 (BS 5839-6), mains-operated smoke alarms to BS EN 14604. Part L: insulation: 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. Part K: stairs: 2.0 m clear headroom over stairs. Full plans application: Building control body must decide a full plans application within 5 weeks, or longer if agreed in writingPart A: structurePart B: fire safetyPart L: insulationPart K: stairsFull plans applicationABCDE

    Building regulations, layer by layer

    The Approved Documents that shape most house projects, from structure to the application itself.

    A · Part A: structure
    Approved Document A: Structure, 2004 edition incorporating 2004, 2010 and 2013 amendments
    B · Part B: fire safety
    All dwellings: fire detection and alarm system minimum Grade D2 Category LD3 (BS 5839-6), mains-operated smoke alarms to BS EN 14604
    C · Part L: insulation
    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
    D · Part K: stairs
    2.0 m clear headroom over stairs
    E · Full plans application
    Building control body must decide a full plans application within 5 weeks, or longer if agreed in writing

    A borough of flats and few houses

    Only 18.8 per cent of Hackney's 106,081 households live in a house, and just 24.6 per cent own their home. A converted house is therefore rarer here than in outer boroughs, which raises the quality bar for those that exist.

    Prices explain why owners look at it: a terraced house averages about £960,633 against £524,885 for a flat. Before buying, check whether the house has already been converted, because that changes what the council can support.

    Planning record and levy in Hackney

    The council decided 689 minor applications in the latest twelve months, granted 81.6 per cent and decided 87.4 per cent on time. That is a reasonable record for a scheme that meets the family-unit test.

    Hackney's levy varies by zone, and the schedule reads: £190/m² (Zone A); £25/m² (Zone B); £55/m² (Zone C); £0/m² (Zone D) Mayoral CIL is band 2, indexed to £72.73 per square metre. The council fee is £610 per dwelling.

    Article 4, conservation areas and heritage in Hackney

    Hackney publishes 77 Article 4 directions covering 197 areas, and has 37 conservation areas and 555 listed entries. The Heritage at Risk Register lists 40 entries in the borough.

    For the full picture of constraints, see architectural drawings in Hackney. We check all of it in the free constraints check, then show the entrance and bin store on the front elevation.

    What you get from us

    A Revit model of the measured survey, then plans, elevations, sections, a block plan and an area schedule that shows the family flat clearly. A second chartered technologist checks the set. The planning drawings in Hackney page explains the submission.

    If the council asks for changes we redraw at no charge until approval, though we never promise the decision.

    Laying out the ground-floor family flat in Hackney

    Because the family flat must sit on the ground floor, the design nearly writes itself, and the work is in the details. The flat takes the front and rear rooms, the garden door and the main bathroom, and the upper flat gets the stair, a front door of its own and a small outdoor space, such as a roof terrace, if the roof allows.

    The trade-off is area. Hackney's houses are typically narrow, and a ground-floor flat with three bedrooms leaves little for the upper flat, which may have to be a one-bedroom home. We test the sums on the survey: the three-bedroom flat against the space standard, the upper flat against the same, and the stair, shared hall and bin store in between. If the numbers fail, we say so before you spend more.

    Costs differ with the tenure of the neighbours. Many Hackney houses are already divided by lease, so check title first. If you share ownership with a freeholder, a licence to alter may be needed for works to shared structure. Beyond that, the borough's 258 lawful development certificate applications in its latest year show how many owners test what is lawful before they build.

    What the Hackney drawing set shows the officer

    The most important sheet is the ground-floor plan, labelled so the family flat is obvious: bedrooms, floor area, garden access and the door to the street. Beside it sits a schedule listing the area of each flat against the space standard, so the officer can tick the policy and the standard in one glance.

    Elevations show the new entrance for the upper flat, the bin and cycle stores and any retrofit measures. Sections show floor-to-ceiling heights and the sound build-ups, and the block plan shows the garden share. Everything comes from one model, so a late change to a wall appears on every sheet at once, and the schedule updates with it.

    What you receive

    Building regulations section drawing showing the construction build-up
    Sample drawing. Building regulations section showing construction build-up for a building control check.
    Red-brick mansion blocks and shopfronts on a street corner
    Unit by unit
    Move up and down — the nearest units slide out.

    Questions

    Do I need a family-sized flat to convert a house in Hackney?

    The local plan expects 1 x 3-bed at ground floor, with a larger unit in the Stamford Hill area.

    Are there many conservation areas in Hackney?

    37, plus 77 Article 4 directions.

    Does Hackney have an HMO Article 4 direction?

    No borough-wide direction for HMOs is recorded in our data, though other Article 4 directions apply.

    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.