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Kingston upon Thames, London

Garden room drawings in Kingston upon Thames

Garden room drawings in Kingston upon Thames start at £495 including VAT. The borough has long back gardens, with 30.9 per cent of its land in domestic garden, and its own design guidance says where an outbuilding should and should not sit.

From £495 (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 garden room 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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    Finished white-rendered rear house extension with large glazed doors

    What Kingston's guidance asks of a garden room

    Kingston's design guide speaks directly about outbuildings. Its Residential Design SPD asks for a garden building to sit as far as possible from shared boundaries, to stay behind the building line of the house, and for any parking lost to be put back on the plot.

    That reads as a polite preference, but it is what a case officer measures against when the permitted development limits are exceeded. A room pushed hard against the neighbour's fence invites an objection; one set a sensible way in, with a screening hedge shown on the drawing, tends to read as subordinate.

    The parking point matters more than people expect. In the suburban roads of the borough a garden room reached over a former hardstanding can take the only off-street space, so the site plan marks vehicles as well as boundaries.

    Two-storey rear extension under construction on a semi-detached house

    Local figures for Kingston upon Thames

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Domestic gardens share of land (GLUD 2005)30.9 % of land that is domestic garden (GLUD 2005)2005data.london.gov.uk
    Green Belt share of the council area17 % of council area covered by green-belt polygons—planning.data.gov.uk
    Conservation areas28 named conservation areas published by the council—planning.data.gov.uk
    Tree preservation zones7,145 tree preservation zone polygons published by the council—planning.data.gov.uk
    Article 4 directions3 Article 4 directions published by the council—planning.data.gov.uk
    Householder applications granted83 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Average price, detached1,304,915 GBP2026-07publicdata.landregistry.gov.uk
    GPDO Sch 2 Pt 1 Class E, para E.1(e)Max 2.5 m if within 2 m of a boundary; otherwise 4 m dual-pitched roof or 3 m any other roof—legislation.gov.uk
    Class E, para E.1(f)2.5 m—legislation.gov.uk
    Building Regulations 2010 Sch 2, Class 6 para 3Detached building up to 15 m² with no sleeping accommodation is exempt—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 Kingston upon Thames
    Single-storey rear extension: the permitted development limitsDepth beyond the original rear wall: 3 m (attached) / 4 m (detached) beyond the original rear wall, single storey. Maximum height: 4 m. Within the zone near the boundary: Eaves no higher than 3 m where within 2 m of the curtilage boundary. Larger extension under prior approval: 6 m (attached) / 8 m (detached), single storey, height max 4 m; not on article 2(3) land or an SSSIABCD

    Single-storey rear extension: the permitted development limits

    The house in section with a rear extension; the dashed lines mark the zone near the boundary.

    A · Depth beyond the original rear wall
    3 m (attached) / 4 m (detached) beyond the original rear wall, single storey
    B · Maximum height
    4 m
    C · Within the zone near the boundary
    Eaves no higher than 3 m where within 2 m of the curtilage boundary
    D · Larger extension under prior approval
    6 m (attached) / 8 m (detached), single storey, height max 4 m; not on article 2(3) land or an SSSI

    Green Belt, conservation areas and tree zones

    About 17 per cent of the borough is mapped as Green Belt and the borough counts 28 conservation areas. Both affect outbuildings: Green Belt policy looks at openness, and conservation areas bring the side-of-house restriction, which reads: On article 2(3) land, no outbuilding between a side wall and the boundary.

    Trees are the other quiet constraint. The council publishes 7,145 tree preservation zone polygons, so a canopy overhanging your plot may well be protected. We show root protection areas on the plan and move the footprint before the foundation is designed.

    The borough holds 3 Article 4 directions covering 114 mapped areas. If yours is one of them, we confirm what it removes before we promise a route.

    Do you need planning permission for a garden room in Kingston?

    Usually the national order decides. For height it says Max 2.5 m if within 2 m of a boundary; otherwise 4 m dual-pitched roof or 3 m any other roof, and the eaves limit is 2.5 m. A garden room in Kingston that stays inside those lines and is used only as an extension of home life does not need an application.

    Where the design goes beyond them, a householder application follows. Kingston decided 742 householder applications in the latest return, granting 83 per cent, so the plans need to answer the guidance in advance rather than leave it to the officer. Our planning drawings in Kingston upon Thames set is built for that.

    If the room is within the limits and you want it on record, ask for a lawful development certificate in Kingston upon Thames.

    Building control and use

    A small detached office usually avoids building control: Detached building up to 15 m² with no sleeping accommodation is exempt. The larger exemption sets a wider footprint but adds a distance or materials test, so the position on the plot feeds back into the specification.

    Houses in the borough average £591,555, and detached ones £1,304,915, so a well-documented garden room is something a buyer will want in the file. If you plan a guest bedroom, the exemption is lost and our building regulations drawings in Kingston upon Thames cover the technical set.

    Use is the other test. The national order requires the room to stay incidental to the house, so a drawing that labels the room as an office, studio or gym with no kitchen or bed gives the officer little to question.

    Cost and next step

    The drawing fee is £495 with VAT included and fixed before we begin. It buys the site plan, plans, elevations, a section and a 3D view of the room. Council fees are paid to the council on top.

    Start from the garden room drawings overview for the national rules, or see everything we do locally on the architectural drawings in Kingston upon Thames page. Send an address and we reply with a route and a fixed quote; if the council wants changes, redraws are free until approval.

    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.
    House extension under construction with scaffolding, new glazed doors and building materials
    Every side considered
    Flick across the turntable to spin it.

    Other services in Kingston upon Thames

    Garden room drawings nearby

    Questions

    How close to the boundary can a garden room go in Kingston?

    The national order lets a building within two metres of a boundary reach only the lower height. The council's design guidance separately prefers outbuildings well away from shared boundaries when permission is needed.

    Does a garden room in Kingston need to keep my parking space?

    If the room needs permission, the borough's guidance expects parking lost to the building to be replaced on the site. We show the car and the room together on the plan.

    Can I build a garden room in the Green Belt part of Kingston?

    Sometimes, as permitted development, but openness is tested harder in Green Belt land, and any application is judged against that policy. We check the map layer first.

    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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