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Planning application

39 Windsor Road London N3 3SN

Refused Barnet 26/1863/192 Proposed Lawful Development Certificate

Works: Extension Loft or dormer Demolition Windows or glazing

Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.

Proposal

Roof extension involving hip to gable with rear dormer windows, 1no. front, 1no. rear facing rooflight following demolition of existing chimney

As published by the council, reference 26/1863/192

Application record

Reference
26/1863/192
Type
Proposed Lawful Development Certificate
Status
Unlawful
Decision
Refused As published: Unlawful
Received
18 May 2026
Validated
18 May 2026
Decided
2 Jun 2026
Ward
Finchley Church End
Decision by
Delegated Decision
Postcode
N3 3SN

Site history

Applications at this address on the Barnet register

This site has had 3 applications since 2025: 0 approved, 1 refused.

  • 26/2481/192 Awaiting decision

    39 Windsor Road London N3 3SN

    Roof extension involving hip to gable with rear dormer windows, 1no. front, 1no. rear facing rooflight following demolition of existing chimney

    Submitted 30 Jun 2026
  • 25/3676/HSE Awaiting decision

    39 Windsor Road London N3 3SN

    Single storey rear extension with new raised patio area following removal of the existing patio area and outrigger building

    Submitted 5 Sep 2025 Householder

Timeline

Dates from the published record

  1. 18 May 2026

    Received by Barnet

  2. 2 Jun 2026

    Decision issued: Unlawful

  3. 16 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

KAS Architects Agent, an architecture practice registered in London

Active · incorporated 2020 · London

16 applications on PlanIndex · across 5 councils · 85% granted

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See their track record

Documents

Plans, drawings, consultee responses and the officer's report

8 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

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What this refusal means

Barnet refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

About lawful development applications

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 39 Windsor Road London N3 3SN

    25/3676/HSE Submitted 5 Sep 2025 50 yards away

    77% historically approved · decision due ~3 Nov

    Single storey rear extension with new raised patio area following removal of the existing patio area and outrigger building

    Awaiting decision Householder Extension 6 docs
    Small domestic

  • 39 Windsor Road London N3 3SN

    26/2481/192 Submitted 30 Jun 2026 100 yards away

    79% historically approved · decision due ~26 Aug

    Roof extension involving hip to gable with rear dormer windows, 1no. front, 1no. rear facing rooflight following demolition of existing chimney

    Awaiting decision Extension Loft or dormer +2

  • The Bungalow Village Road London N3 1TL

    25/3505/HSE Submitted 26 Aug 2025 150 yards away

    Replacement and alteration of existing ground floor rear windows

    Granted Householder Windows or glazing 7 docs
    Domestic

  • 23 Village Road London N3 1TL

    TCP/0236/26 Submitted 23 Apr 2026 150 yards away

    1x Douglas Fir - Crown thin to let more light through but keeping the trees natural shape. Standing in T1 of Tree Preservation Order.

    Decided Trees 9 docs

  • 14 Windsor Road London N3 3SS

    25/4050/HSE Submitted 7 Oct 2025 150 yards away

    77% historically approved · decision due ~3 Dec

    Partial demolition of the rear facade at ground, first and roof levels. Construction of a part single, part two storey rear extension with rooflights and green roofs. New lowered rear patio with associated steps to garden. Roof extension including hip to gable, rear dormer window and 1no. side gable window. Replacement of existing windows with new timber framed and aluminium double glazed windows

    Awaiting decision Householder Extension Loft or dormer +2 19 docs
    Domestic

  • 22 Village Road London N3 1TL

    26/0169/CON Submitted 16 Jan 2026 150 yards away

    93% historically approved · decision due ~13 Mar

    Submission of details of condition 5 (Tree Protection & Method Statement) pursuant to planning permission 25/2899/HSE dated 23/09/2025

    Awaiting decision Conditions Trees 3 docs

In Barnet

  • 26/2679/192 Granted

    21 Myddelton Park London N20 0JH

    Single storey rear extension and increase in ridge height of existing rear outrigger (Amended description).

    Received 20 Jul, published by the council 7 Aug 2026 Lawful development
  • 26/1362/191 Refused

    145 Cotswold Gardens London NW2 1PL

    Use as a House in Multiple Occupation (HMO) for 6 people

    Received 14 Apr, published by the council 25 Jul 2026 Lawful development
  • 26/1907/191 Granted

    8 Golders Manor Drive London NW11 9HT

    Use of the property as a self-contained residential unit at ground floor level and the first and second floors as a 4-bedroom, 4-person House in Multiple Occupation (Sui Generis) (AMENDED DESCRIPTION)

    Received 21 May, published by the council 16 Aug 2026 Lawful development
  • 26/2392/192 Refused

    6 Mostyn Road Edgware HA8 0JD

    New front hardstanding and vehicular access to provide off-street parking

    Received 23 Jun, published by the council 9 Aug 2026 Lawful development
  • 26/2059/192 Refused

    Low Ridge Rowley Lane Barnet EN5 3HS

    Erection of a rear outbuilding

    Received 3 Jun, published by the council 16 Aug 2026 Lawful development