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Planning application

10 Squirrels Close London N12 8AY

Refused 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

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

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
Refused As published: 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, 1 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.

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Open the documents

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

  • 10 Squirrels Close London N12 8AY

    26/0520/HSE Submitted 10 Feb 2026 50 yards 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 50 yards 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 50 yards away

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

    Granted Lawful development Extension Loft or dormer +1 16 docs

  • 14 Highwood Avenue London N12 8QP

    24/1928/HSE Submitted 16 May 2024 100 yards 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 150 yards away

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

    Granted Trees 9 docs

  • Aldwick Court Sonia Gardens London N12 8BB

    TPP/0740/25 Submitted 5 Nov 2025 150 yards away

    1 x Sycamore - Reduce overall crown volume by approximately 5 metres (30%) to alleviate mechanical stress and improve balance. Undertake major thinning to reduce wind loading and improve light penetration by 15%. Remove all major dead wood throughout the crown to reduce risk of branch failure. Standing in Group G126 of Tree Preservation Order (amended description)

    Granted Trees 7 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