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Planning application

10 Squirrels Close London N12 8AY

Decided Barnet 25/4379/192 Proposed Lawful Development Certificate

Works: Extension Loft or dormer Windows or glazing Small domestic

Read from the description, not a valuation. How we read the register

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

Proposal

Single storey rear extension. Roof extension involving hip to gable, rear dormer window and replacement and insertion of 3no. front facing rooflights and new side gable window. Conversion of the existing garage into habitable room, insertion of window to replace garage door. New outbuilding

As published by the council, reference 25/4379/192

Application record

Reference
25/4379/192
Type
Proposed Lawful Development Certificate
Status
Unlawful
Decision
Unlawful
Received
3 Nov 2025
Validated
5 Nov 2025
Decided
31 Dec 2025
Ward
Totteridge & Woodside
Decision by
Delegated Decision
Postcode
N12 8AY

Site history

Applications at this address on the Barnet register

This site has had 2 applications since 2025: 1 approved, 0 refused.

  • 26/0520/HSE Granted

    10 Squirrels Close London N12 8AY

    Single storey rear extension. Roof extension involving hip to gable, rear dormer window reduction, 3no. front facing rooflights and new side gable window. Conversion of the existing garage into habitable room, insertion of window and door to replace garage door. Removal of rear decking and levelling of rear garden (AMENDED DESCRIPTION)

    Decided 23 Apr 2026 Householder

Timeline

Dates from the published record

  1. 3 Nov 2025

    Received by Barnet

  2. 5 Nov 2025

    Validated

    Checked as complete and ready for consideration.

  3. 31 Dec 2025

    Decision issued: Unlawful

  4. 10 Aug 2026

    Added to PlanIndex

Documents

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

14 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.

Trade members open them from here.

Open the documents

After the decision

Barnet has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. 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 500 metres

  • 10 Squirrels Close London N12 8AY

    26/0520/HSE Submitted 10 Feb 2026 0m away

    Single storey rear extension. Roof extension involving hip to gable, rear dormer window reduction, 3no. front facing rooflights and new side gable window. Conversion of the existing garage into habitable room, insertion of window and door to replace garage door. Removal of rear decking and levelling of rear garden (AMENDED DESCRIPTION)

    Granted Householder Extension Loft or dormer +1 15 docs
    Small domestic

  • Trehaven St Andrews Close London N12 8BA

    TPP/0568/25 Submitted 9 Sep 2025 32m away

    1 x Diseased Deodar Cedar - Remove. Standing in T159 of Tree Preservation Order. (Exempt Work)

    Decided Trees 9 docs

  • Trehaven St Andrews Close London N12 8BA

    25/4717/192 Submitted 25 Nov 2025 35m away

    Roof extension involving rear dormer window, 2no. front and 1no. rear and 1no. side facing rooflight

    Decided Lawful development Extension Loft or dormer +1 16 docs

  • 20 Limes Avenue London N12 8QN

    26/0769/HSE Submitted 27 Feb 2026 107m away

    77% historically approved · decision due ~27 Apr

    Single storey rear extension with 2no. rooflights

    Awaiting decision Householder Extension Loft or dormer 5 docs
    Small domestic

  • 14 Highwood Avenue London N12 8QP

    24/1928/HSE Submitted 16 May 2024 108m away

    Single storey rear extension with 2no. rooflights and new patio area following the demolition of the existing rear bay window and outrigger. Changes to front fenestration

    Granted Householder Extension Loft or dormer +2 6 docs
    Small domestic

  • Claire Court Woodside Avenue London N12 8TD

    TPP/0743/25 Submitted 6 Nov 2025 122m away

    1 x Cypress (applicants ref. T4) - Fell to ground level. Standing in Group G100 of Tree Preservation Order.

    Granted Trees 9 docs

In Barnet

  • 26/2679/192 Decided

    21 Myddelton Park London N20 0JH

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

    20 Jul 2026 Lawful development
  • 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