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Kingston upon Thames, London

Prior approval drawings in Kingston upon Thames

Prior approval drawings in Kingston upon Thames are for houses that want a deeper single-storey rear extension than ordinary permitted development allows. The borough has 28 conservation areas, and its latest return lists 3 larger home extension prior approvals granted against 35 refused, so a complete, tidy notification matters here. We draw it from a 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 prior approval 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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    Brick cottage with a tiled roof, chimneys and a front dormer window

    How Kingston upon Thames treats larger home extensions

    The depth allowance is national, and a council cannot alter it. What a council records is how often its officers let a neighbour's objection decide the case. In its latest government return Kingston upon Thames lists 3 larger home extension prior approvals granted and 35 refused. Refusals outnumber grants by a wide margin, so neighbour impact deserves close attention in the drawings.

    That reading is shaped by the borough's Residential Design SPD, which sets expectations for how an extension relates to neighbouring windows, gardens and boundaries, even though it governs full applications and not this route. We use it as a guide to what the officer will notice.

    Land designations come first. The borough has 28 conservation areas, and 3 Article 4 directions that together map to 114 separate areas. Any article 2(3) land is excluded from the route, so we plot your address against all of it before anything else.

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

    Local figures for Kingston upon Thames

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Conservation areas28 named conservation areas published by the council—planning.data.gov.uk
    Article 4 directions3 Article 4 directions published by the council—planning.data.gov.uk
    Article 4 direction areas114 Article 4 direction area polygons published by the council—planning.data.gov.uk
    Listed building entries163 list entries (Historic England, within the LPA boundary)—planning.data.gov.uk
    Households living in a house61.5 % of households living in a house or bungalow (detached, semi-detached or terraced)Census 2021nomisweb.co.uk
    Larger home extension prior approvals granted3 decisions2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.gov.uk
    Larger home extension prior approvals refused35 decisions2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.gov.uk
    Domestic gardens share of land (GLUD 2005)30.9 % of land that is domestic garden (GLUD 2005)2005data.london.gov.uk
    Householder applications granted83 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Lawful development certificate applications (PS1)220 certificates2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.gov.uk
    Class A, para A.1(g)6 m (attached) / 8 m (detached), single storey, height max 4 m; not on article 2(3) land or an SSSI—legislation.gov.uk
    Class A, para A.4(10)(c): development may begin if the LPA has not notified a decision within 42 days of receiving the information42 days—legislation.gov.uk
    Class A, para A.4(5)(d)LPA notifies adjoining owners/occupiers, giving at least 21 days for representations days—legislation.gov.uk
    Prior approval: Larger Home Extensions Part 1 Class A; Additional storeys Part 1 Class AA249 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 Kingston upon Thames
    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

    A suburban borough of houses

    This is a place where the route actually applies: 61.5 per cent of households live in a house or bungalow. Domestic gardens cover 30.9 per cent of the borough's land in the government's generalised land use database.

    Space behind the house is why owners here ask for depth, and why neighbours object. A terraced house averages £591,784, and an extra metre or two of kitchen is a real investment, so we use the neighbour test as a design tool before drawing.

    The borough also holds 163 list entries. A listed house needs separate consent, and the larger home extension route gives it none.

    What the notification must show

    The national depth rules are 6 m (attached) / 8 m (detached), single storey, height max 4 m; not on article 2(3) land or an SSSI. Because the allowance is counted from the house as first built, we survey the original rear wall and mark every earlier addition on the plans.

    The council then notifies adjoining owners and occupiers: LPA notifies adjoining owners/occupiers, giving at least 21 days for representations. An officer cannot refuse for design taste, only on the impacts the Order lists, so the drawings show each neighbouring window, its distance from the extension and the height of the eaves.

    If the council has not given its decision within 42 days of receiving the information, work may begin, though we want the outcome in writing first. The information required is: Written description (depth beyond rear wall, max height, eaves height), site plan, addresses of adjoining premises, developer contact address.

    If an objection looks likely

    In a borough where refusals are recorded often, we run the extension against the two next-door habitable windows at design stage. If a slightly shallower scheme removes the likely objection, you see both versions with the trade-off written plainly.

    When the answer is still no, the fallback is a householder application. The council granted 83 per cent of 742 householder decisions in its latest year, and our planning drawings in Kingston upon Thames are drawn for that test.

    If your project fits the permitted development limits outright, a certificate may be cheaper. The council recorded 220 certificate applications, and our Lawful Development Certificate drawings in Kingston upon Thames describe what that involves.

    Working with us in Kingston upon Thames

    Every job starts with the free constraints check. We survey the house and the neighbours' rear elevations, draw the notification, and have a second chartered technologist, never the drafter, read it against the Order before we send it.

    We track the neighbour period and answer the officer, and a redraw after an amendment request is not charged again. The national rules sit on our prior approval drawings page, and the borough overview is architectural drawings in Kingston upon Thames.

    Across the river, the same route in Richmond upon Thames has a very different record, which is a useful comparison if you own near the boundary.

    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.
    Pencil resting on a dimensioned technical drawing beside a scale rule
    The street around you
    Move across the plinth — the blocks rise around the pointer.

    Other services in Kingston upon Thames

    Prior approval drawings nearby

    Questions

    Does Kingston upon Thames often grant larger home extension prior approvals?

    The latest return records 3 granted and 35 refused, so officers here do refuse, and a careful neighbour-impact design is worth the effort.

    Can a house in a conservation area use this route?

    No. The route excludes article 2(3) land, and the borough has 28 conservation areas, so we check your address first.

    How long does the council take?

    If it has not notified you of its decision within 42 days of receiving the information, work may begin. We cannot promise a decision date.

    What does the council charge?

    The council fee for a larger home extension is £249, paid to the council. Our own fee is fixed after the free constraints check.

    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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