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Greenwich, London

Velux loft conversion drawings in Greenwich

Velux loft conversion drawings in Greenwich cost £695 including VAT. Greenwich has a large heritage stock, 540 listed entries in all, and a World Heritage Site at its centre. For a rooflight scheme that means the first job is to find out whether your house is protected, then to draw the roof so it reads quietly.

From £695 (VAT included)

  • MCIAT chartered
  • £2m PI insured
  • LABC Partnered
  • Fixed fees, VAT included

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We use it to check conservation areas and constraints.
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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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    Converted loft bedroom with roof windows and a Juliet balcony

    Heritage comes first in Royal Greenwich

    Historic England records 540 listed entries in the borough: 28 at Grade I, 45 at Grade II*, and 466 at Grade II. The borough also has 23 conservation areas and 1 World Heritage Site. A listed house needs consent for roof windows of any size, and a conservation area brings closer scrutiny of the roof, while an Article 4 direction can remove the permitted development right altogether.

    We therefore begin with the address check, using the heritage map before the tape measure. Two similar houses can differ in what they may do, and one boundary line can change the application type.

    Where heritage applies, a rooflight set into the slope is still among the gentlest changes you can propose. We draw the unit flush, in a conservation-style frame where asked, and show the existing roof in the same view so the officer can compare.

    Brick cottage with a tiled roof, chimneys and a front dormer window

    Local figures for Greenwich

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Conservation areas23 named conservation areas published by the council—planning.data.gov.uk
    Listed building entries540 list entries (Historic England, within the LPA boundary)—planning.data.gov.uk
    Grade I listed entries28 list entries—planning.data.gov.uk
    Grade II* listed entries45 list entries—planning.data.gov.uk
    worldHeritageSites1 World Heritage Sites intersecting the LPA boundary—planning.data.gov.uk
    Householder decisions624 decisions1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications granted77.1 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications decided in time94.2 % decided within 8 weeks or an agreed extended period1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    GPDO Sch 2 Pt 1 Class C, para C.1(b)Roof alterations (e.g. rooflights) may not protrude more than 0.15 m beyond the roof plane—legislation.gov.uk
    Approved Document K 2013, para 1.13, Diagram 1.4Loft 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)—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 Greenwich
    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

    Greenwich householder decisions in numbers

    Greenwich decided 624 householder applications in its latest published year and granted 77.1 per cent, with 94.2 per cent decided in time. A grant rate below nine in ten is a reason not to submit a thin set of drawings here.

    These are borough-wide figures covering every type of householder work. They tell you something about the timetable and the care the application needs, and nothing about your own roof.

    Only 48.4 per cent of Greenwich households live in a house or bungalow, and most of the rest live in flats. That matters here more than in most boroughs: a flat owner has no permitted development for the roof, may not own it, and usually needs the freeholder on side before a drawing is worth paying for. We ask about tenure on the first call.

    Velux loft conversion drawings in Greenwich: the building rules

    The average terraced sale is 545,565 pounds in the latest data, so a spare bedroom is worth chasing. Terraces often have a tight stair run, and the Approved Document allows a reduced headroom standard in that situation: 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).

    Fire safety changes once a loft becomes a storey. New storey above 4.5 m by loft conversion: protect the full escape route with fire-resisting doors (min E 20) and partitions (min REI 30). Smoke detection is also covered: All dwellings: fire detection and alarm system minimum Grade D2 Category LD3 (BS 5839-6), mains-operated smoke alarms to BS EN 14604. We draw the alarms and doors on the plans so the later building regulations drawings in Greenwich carry them forward.

    Choosing the application type

    For an unprotected house, a Lawful Development Certificate can confirm the work in writing, given the rooflight limit that Roof alterations (e.g. rooflights) may not protrude more than 0.15 m beyond the roof plane. Where a direction has removed the right, or the house is listed, the route is a planning application; see planning drawings in Greenwich. Listed houses also need a separate consent drawn alongside it.

    If the roof proves too low even for a rooflight conversion, a dormer loft conversion in Greenwich adds headroom, though it faces tougher scrutiny in protected areas. The overview is at loft conversion drawings in Greenwich.

    Where the house is on a street with a uniform roofline, the officer will compare your elevation against the neighbours, so we draw the street view alongside the house and keep the rooflight heights aligned with the next property.

    Fixed fee and checking

    We quote £695 including VAT before work starts. Each sheet is checked by a second MCIAT chartered technologist, and revisions requested by the council are redrawn free until approval. Your written quote also lists the survey we need and the consent route we expect, so the scope is settled before anyone picks up a pencil. More local detail is on architectural drawings in Greenwich, and the national guide is Velux loft conversion drawings.

    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.
    Rear view of brick terraced houses in London with slate roofs and chimney stacks along the shared roofline
    Storey by storey
    Move up and down — the car travels between floors.

    Other services in Greenwich

    Velux loft conversion drawings nearby

    Questions

    Can I put rooflights in a listed house in Greenwich?

    Only with listed building consent. With 540 listed entries in the borough, we check the heritage map before anything else.

    Does the World Heritage Site affect my loft?

    Greenwich has 1 World Heritage Site, and houses near it can face extra care on roof visibility. We check proximity at the start.

    How much do the drawings cost?

    From £695 including VAT.

    What is the escape window requirement?

    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.

    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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