020 7864 7245Request a fixed quote

Westminster, London

Planning appeals in Westminster

Planning appeals in Westminster start with the refusal notice. If Westminster City Council has refused your application, you have 12 weeks from the decision notice to appeal a householder case. The council granted 82 per cent of its householder applications, so a refusal here tends to rest on a specific reason, often heritage. We read the notice against the City Plan and prepare the grounds and drawings.

Fixed quote after a free constraints check

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

Request a fixed quote

We use it to check conservation areas and constraints.
Pick the council that decides your application.
A few lines: what you want to build, and anything the council has already said.
Add photos or drawings

Drop files here or choose from your device

PDF, JPG, PNG, DWG · up to 10 files, 90 MB in total

    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 planning appeals

    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.

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

    Planning appeals in Westminster: what a Westminster refusal usually rests on

    Westminster decided 366 householder applications in the period we hold figures for, and granted 82 per cent of them. Minor applications, which cover small housing and commercial schemes, ran to 1,766 decisions with 85.8 per cent granted. A refused scheme is therefore the exception, and the officer's reasons tend to be specific: harm to a conservation area, to the setting of a listed building, or to the character of a mews.

    The borough's own guidance sets the yardstick. The council publishes the Roofs: a guide to alterations and extensions on domestic buildings SPG and the Mews: a guide to alterations SPG, and a refusal for a roof or mews scheme may cite them. The first thing we do is lay the refusal reasons beside those two documents and the City Plan 2019-2040 (2026) policies named in the notice. If a reason quotes a rule that the document does not contain, that is a ground of appeal. If it quotes the rule correctly, we say so and look at a revised scheme instead.

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

    Local figures for Westminster

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Householder decisions366 decisions1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications granted82 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Minor application decisions1,766 decisions1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Minor applications granted85.8 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Conservation areas56 named conservation areas published by the council—planning.data.gov.uk
    Listed building entries4,015 list entries (Historic England, within the LPA boundary)—planning.data.gov.uk
    Article 4 directions10 Article 4 directions published by the council—planning.data.gov.uk
    Households living in a house10.2 % of households living in a house or bungalow (detached, semi-detached or terraced)Census 2021nomisweb.co.uk
    Owner-occupied households27.4 % of households owner-occupied (owned outright or with mortgage/loan)Census 2021nomisweb.co.uk
    Annex B, householder appeals (written representations), decisions in June 2026; 351 decisions11.6 weeks—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 Westminster
    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

    Heritage is the heavy factor in this borough

    Westminster has 56 conservation areas, 4,015 list entries and 1 World Heritage Site within its boundary. Of those entries, 205 are Grade I and 373 are Grade II*. The council also publishes 10 Article 4 directions, which remove permitted development rights in defined areas.

    An inspector deciding a Westminster appeal must give great weight to the conservation of heritage assets, so the appeal statement has to deal with significance before it deals with design. We describe what is significant about the building and the street, show where the proposal touches it, and use sections and photographs to show what changes and what does not. A rear closet wing that cannot be seen from any public place is a different case from a front roof alteration, and the drawings should make that obvious at a glance.

    Check the heritage position of your own address on the council's planning search before you decide: https://idoxpa.westminster.gov.uk/online-applications/.

    Flats, mews and roofs: the common appeal subjects

    Only 10.2 per cent of Westminster households live in a house, and 27.4 per cent own their home. Most people applying here are leaseholders in flats, or own a mews house or a terrace in a conservation area, so many appeals are about roof extensions, rear infill, replacement windows or the loss of a terrace or lightwell.

    Flat owners face an extra problem. Permitted development rights are far narrower for flats, so a refusal often means there is no fallback route. For a building whose roof or rear elevation has been altered before, we check the planning history for similar approvals on the same terrace, because an inspector gives real weight to what the council has already accepted next door. Our planning drawings service describes how those comparison sheets are prepared.

    Appeal, reapply or use another route

    A householder appeal decided on written representations took a median of 11.6 weeks nationally in the latest Planning Inspectorate figures, and the twelve-month median for written representations was 18 weeks. Those are national figures, not a forecast for a Westminster case. Where the refusal is narrow, such as one elevation or one window, a revised application can be quicker.

    Sometimes the work never needed permission at all. Westminster dealt with 138 lawful development certificate applications in the latest national return, and for a legitimate case a Lawful Development Certificate gives certainty without an appeal. If the work has been built already, read about retrospective planning applications before you contact the council.

    What we prepare for a Westminster appeal

    Written representations are the usual route. We prepare the statement, answering each reason for refusal in turn, with the heritage argument at the front. We prepare the plans, sections and elevations the inspector will use, drawn from one model so every sheet agrees, plus a three-dimensional view where the argument concerns height or outlook.

    A second member of the team, who did not draw the set, checks it against the refusal notice before it is submitted. We do not promise a result, because the decision belongs to an independent inspector. The quote is fixed once the free constraints check is done, and you can see the wider service on our planning appeals page or the full range on architectural drawings in Westminster.

    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.

    Questions

    How long do I have to appeal a Westminster refusal?

    For a householder application it is 12 weeks from the date on the decision notice. For other applications the limit is 6 months from the decision notice (or expiry of the decision period).

    Does a conservation area make an appeal harder?

    It raises the standard of justification. With 56 conservation areas in the borough, the appeal statement must show how the proposal treats the area's significance.

    Which Westminster documents do you check first?

    The refusal notice, the officer's report, the City Plan 2019-2040 (2026) and the council's Roofs: a guide to alterations and extensions on domestic buildings SPG.

    Is a flat owner's appeal different?

    Often yes, because permitted development rights for flats are narrow, so the appeal may be the only route. We check the planning history of the building for precedents.

    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.