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Kingston upon Thames, London

Velux loft conversion drawings in Kingston upon Thames

Velux loft conversion drawings in Kingston upon Thames suit a borough of houses: 61.5 per cent of households live in a house or bungalow, so most owners can use permitted development for rooflights, provided the address sits outside the borough's 28 conservation areas and Article 4 areas. We draw them from £695 including VAT.

From £695 (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 velux loft conversion 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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    Brick cottage with a tiled roof, chimneys and a front dormer window

    Why Kingston is a good borough for rooflights

    Kingston is a borough where houses dominate. With 61.5 per cent of households in houses or bungalows, the typical client has a pitched roof, a loft that can be boarded and a right to alter the roof under Class C. Flat-dominated boroughs rarely offer that.

    The national limit is simple enough to explain on the doorstep: Roof alterations (e.g. rooflights) may not protrude more than 0.15 m beyond the roof plane. Because nothing is built out, a Velux scheme needs no extra roof volume, and the question becomes how much usable floor you can win under the existing slope.

    The borough's own record on roof design is thin in the guidance we hold: we found no rooflight rule with a page reference in the Residential Design SPD. We therefore design to the national limits and the general character of the street, and ask the council directly when a house sits near a protected area.

    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
    Households living in a house61.5 % of households living in a house or bungalow (detached, semi-detached or terraced)Census 2021nomisweb.co.uk
    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
    Householder decisions742 decisions1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications granted83 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications decided in time92.5 % decided within 8 weeks or an agreed extended period1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Average price, terraced591,784 GBP2026-07publicdata.landregistry.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
    Loft enlargement in section: the permitted development limitsExtra roof volume allowed: 40 m³ (terrace house) / 50 m³ (any other house) additional roof volume. Set-back from the eaves: Original eaves maintained; enlargement set at least 0.2 m from the eaves measured up the roof slope, so far as practicable (not required for hip-to-gable or roofs joining a rear/side extension). Height limit: No part higher than the highest part of the existing roofABC

    Loft enlargement in section: the permitted development limits

    A dormer on the rear slope, with the limits that decide whether it needs planning permission.

    A · Extra roof volume allowed
    40 m³ (terrace house) / 50 m³ (any other house) additional roof volume
    B · Set-back from the eaves
    Original eaves maintained; enlargement set at least 0.2 m from the eaves measured up the roof slope, so far as practicable (not required for hip-to-gable or roofs joining a rear/side extension)
    C · Height limit
    No part higher than the highest part of the existing roof

    Conservation areas and Article 4 directions

    The borough has 28 conservation areas and 3 Article 4 directions covering 114 mapped areas, plus 163 listed building entries. The directions are few but wide, and an owner on a protected road can find that a front-slope rooflight needs an application when the house next door in another road does not.

    Our standard practice is to read the direction and the conservation area appraisal before any design work. If rights have been withdrawn we say so in the first reply, with the application route and its likely drawings. The lawful development certificate page covers the certificate route where rights remain.

    What the planning statistics say

    Kingston decided 742 householder applications in the latest twelve months of published statistics. 83 per cent were granted, and 92.5 per cent were decided within eight weeks or an agreed extension.

    A grant rate in the low eighties means a real share of householder schemes do not succeed, so we read the officer reports on your own street to see what was objected to. A Velux loft changes neither the footprint nor the roof shape, so it sits at the gentle end of the householder range. We still send the officer elevations that make the modest scale obvious.

    Value, volume and the choice between Velux and a dormer

    A terraced home in Kingston averages about £591,784 in the latest index, almost level with the borough-wide average. At that level a new bedroom is worth building, but only if the headroom is real.

    Measure first: the ridge height above the ceiling joists decides whether a Velux scheme gives a proper room. Where it does not, a dormer adds the missing height and the volume allowance becomes the controlling number. Our dormer loft conversion drawings in Kingston upon Thames page sets out that route, and loft conversion drawings in Kingston upon Thames compares the other loft types.

    Stair, escape and energy details we resolve for you

    Stairs take the most floor area. The regulations allow a reduced standard when full height is out of reach: Loft conversions where 2.0 m cannot be achieved: 1.9 m at the centre of the stair, 1.8 m at the side (half width). We try the stair in more than one position on your section before choosing.

    The escape window rule is specific: Escape window: unobstructed openable area at least 0.33 m², at least 450 mm high and 450 mm wide, bottom of opening no more than 1100 mm above floor. We label the unit and its sill height on the drawing so the building control surveyor can check it without a query.

    Heat loss is tested as well: 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. Our building regulations drawings carry the roof build-up, and your engineer's floor sizes arrive through structural calculations.

    Price, checking and neighbouring boroughs

    The drawings cost £695 including VAT, fixed in advance. You receive plans, elevations, a roof section and location and block plans, checked by a second MCIAT chartered technologist, and free redraws if the council asks for changes.

    For the borough's heritage and tree constraints see architectural drawings in Kingston upon Thames. Nearby alternatives include Richmond upon Thames and Merton, each with different roof guidance.

    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.
    Slate-clad roof extension on a yellow-brick London terraced house
    Storey by storey
    Move up and down — the car travels between floors.

    Other services in Kingston upon Thames

    Velux loft conversion drawings nearby

    Questions

    Do I need planning permission for Velux windows in Kingston?

    Usually not for a house with its rights intact, within this limit: Roof alterations (e.g. rooflights) may not protrude more than 0.15 m beyond the roof plane. Conservation areas and Article 4 directions can change that.

    Does Kingston refuse many householder applications?

    The latest published figure shows 83 per cent granted. Rooflight schemes are modest, but we still draw them carefully.

    Is Velux enough, or do I need a dormer?

    It depends on the height under the ridge. We measure first, then recommend the lighter option that gives a proper room.

    What is the fee?

    £695 including VAT, fixed and published.

    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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