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Hounslow, London

New build drawings in Hounslow

Hounslow judges a new home against its Character, Sustainability and Design Codes SPD, and charges levy at one of three borough rates depending on which side of the borough you build in. We are MCIAT chartered architectural technologists, and our new build drawings in Hounslow start at £1,450 including VAT.

From £1,450 (VAT included)

  • MCIAT chartered
  • £2m PI insured
  • LABC Partnered
  • 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 new build 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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    Georgian brick terrace with sash windows, arched fanlight doorways, stone steps and iron railings in London

    Design codes: how Hounslow reads a new house

    The council's Character, Sustainability and Design Codes SPD is the document an officer opens beside your drawings. It turns the borough's character into codes that a street, a plot and a building can be tested against, so a design is judged on measured relationships rather than on taste.

    For a single house or a short terrace that means three things we draw explicitly. First, the building line and the rhythm of the street, shown on a street elevation with the neighbours' ridge heights. Second, the roof form, drawn against the pitch and eaves of the houses around it. Third, the front boundary and the amount of paving, shown on the site plan.

    The local plan behind the codes is Hounslow Local Plan 2015-2030 (Volumes 1 and 2), and we cite its policies on the first sheet of every set so the officer sees how each decision was reached.

    The honest limit of any code is judgement. Where a plot sits between two character types, we show the officer both readings and explain which one the design follows and why, instead of leaving them to guess.

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

    Local figures for Hounslow

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Supplementary planning documentCharacter, Sustainability and Design Codes SPD2024hounslow.gov.uk
    Borough CIL residential rate£200/m² (CIL Zone 1, East); £110/m² (CIL Zone 2, Central); £70/m² (CIL Zone 3, West)schedule rate (2015); the council states the 2026 index figure is 400 but publishes no indexed rates on its CIL pagepfm.exacom.co.uk
    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
    Minor application decisions312 decisions1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Minor applications granted72.4 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Minor applications decided in time97.1 % decided within 8 weeks or an agreed extended period1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications granted78.5 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Green Belt share of the council area22 % of council area covered by green-belt polygons—planning.data.gov.uk
    Conservation areas33 named conservation areas published by the council—planning.data.gov.uk
    worldHeritageSites1 World Heritage Sites intersecting the LPA boundary—planning.data.gov.uk
    Listed building entries519 list entries (Historic England, within the LPA boundary)—planning.data.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 Hounslow
    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

    Three levy zones across one borough

    Hounslow charges its community infrastructure levy by zone: £200/m² (CIL Zone 1, East); £110/m² (CIL Zone 2, Central); £70/m² (CIL Zone 3, West). Whether your plot is in the east, centre or west decides which rate applies, and the gap between the first and the last is large enough to change the viability of a small scheme.

    On top of that the Mayor charges at band 2, with an indexed rate of £72.73 per square metre for permissions granted this year. Both charges are worked out on new floor area, so we calculate the gross internal area on the drawings the same way the regulations do.

    The result is a levy estimate you can see before you commit to a design, and a clear reason for trimming a room if the figure is out of line with the plot.

    Minor housing decisions in Hounslow

    A new house is a minor application unless it reaches ten homes. In the latest return Hounslow decided 312 of them and granted 72.4 per cent. It met the timetable on 97.1 per cent, so the council is quick even where the answer is a refusal.

    That is lower than its householder grant rate of 78.5 per cent, which is the reason we resist the urge to submit thin drawings. A quick decision on a weak scheme is a quick refusal.

    Our planning drawings page describes the householder route, and our lawful development certificate page explains when an existing use can be confirmed before you build on it.

    Timing helps you plan your own programme. The statutory period for a non-major scheme is 8 weeks, and Hounslow usually meets it, so a clean submission can reasonably expect a decision close to that point. We book the survey, the drawings and the statement so the application lands complete on the first day, because a validation query costs more time than any design change.

    Green Belt, heritage and a World Heritage Site

    Green Belt covers 22 per cent of the borough, and the borough also includes 33 conservation areas. A plot inside the Green Belt meets a different set of tests than one outside it.

    Hounslow also contains 1 World Heritage Site and 519 listed building entries, 32 of them Grade I. A new house that borders any of these needs a heritage view shown on the drawings, and sometimes a short statement from us explaining the setting.

    We identify these constraints before the first sketch. If the plot is ordinary, you hear that in the same call; if it is not, you hear the extra work required and its cost before you instruct us.

    Our new build drawings and what comes after

    A fixed fee from £1,450 including VAT covers the site plan, floor plans, elevations, sections, roof plan and a street scene, all checked by a second chartered technologist. Free redraws are included if the council asks for changes.

    When permission is in place, the same model feeds our construction drawings and building regulations drawings, so the build information starts from the design that was submitted.

    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.
    Red-brick mansion blocks and shopfronts on a street corner
    Points, not guesses
    Paint across the grid with the pointer.

    Other services in Hounslow

    New build drawings nearby

    Questions

    What does the Hounslow design codes document change for a new house?

    It makes street rhythm, roof form and front boundary treatment measurable. We show each on the drawings, with neighbouring ridge heights on a street elevation, so the officer can test the proposal against the codes directly.

    Which CIL rate applies to my plot in Hounslow?

    The borough charges by zone, with £200/m² (CIL Zone 1, East); £110/m² (CIL Zone 2, Central); £70/m² (CIL Zone 3, West). We confirm your zone from the address and work the levy on the gross internal area shown on the drawings.

    How often does Hounslow grant minor housing applications?

    In the latest return, 72.4 per cent of 312 minor decisions were granted, and 97.1 per cent were decided in time.

    Does a nearby listed building affect a new build in Hounslow?

    It can. The borough holds 519 listed building entries and a World Heritage Site, so we check setting early and show the relationship on the elevations.

    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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