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Planning application

39 Windsor Road London N3 3SN

Decided Barnet 26/1863/192 Proposed Lawful Development Certificate

Works: Extension Loft or dormer Demolition Windows or glazing

Decided. The decision notice on the council portal carries the outcome in full, including any conditions.

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
Unlawful
Received
18 May 2026
Validated
18 May 2026
Decided
2 Jun 2026
Ward
Finchley Church End
Decision by
Delegated Decision
Postcode
N3 3SN

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

Agent on file, an architecture practice registered in London

15 applications on PlanIndex · across 6 councils · 90% granted

Trade members see who it is, their full track record, and every application they have filed.

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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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After the decision

The process from here

The council has decided this application; the published outcome sits in the record above and the decision notice on the council portal carries the detail, including any conditions.

If permission was granted, work must normally begin within three years of the decision. If it was refused, the applicant can appeal within the statutory time limit or submit a revised scheme.

About lawful development applications

How this application type works

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

Nearby applications

Within 500 metres

  • 39 Windsor Road London N3 3SN

    25/3676/HSE Submitted 5 Sep 2025 0m 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 80m 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 135m 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 152m away

    87% historically approved · decision due ~6 Jul

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

    Awaiting decision Trees 8 docs

  • 14 Windsor Road London N3 3SS

    25/4050/HSE Submitted 7 Oct 2025 158m 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 158m away

    95% 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

  • 26/1907/191 Decided

    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)

    21 May 2026 Lawful development
  • 26/2059/192 Decided

    Low Ridge Rowley Lane Barnet EN5 3HS

    Erection of a rear outbuilding

    3 Jun 2026 Lawful development
  • 26/2066/192 Decided

    355 Hendon Way London NW4 3NB

    Roof extension involving rear dormer window and 3no. front facing rooflights. Removal of chimney on rear elevation (AMENDED DESCRIPTION)

    3 Jun 2026 Lawful development
  • 26/1663/192 Decided

    152 Deans Lane Edgware HA8 9NT

    Change of use from single family dwellinghouse (Class C3a) to supported living accommodation Class C3b)

    5 May 2026 Lawful development
  • 26/2025/192 Decided

    18 Hale Drive London NW7 3DU

    Roof extension involving hip to gable, rear dormer window, 2no. front facing rooflights and new side gable window

    1 Jun 2026 Lawful development