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Planning application

36 Oakleigh Avenue London N20 9JJ

Refused Barnet 25/4312/HSE Householder Application

Works: Extension Loft or dormer 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

Two storey front extension. Extensions and alterations to existing roof form, new gable ends and 2no. front facing rooflights

As published by the council, reference 25/4312/HSE

Application record

Reference
25/4312/HSE
Type
Householder Application
Status
Refused
Decision
Refused As published: Refuse
Received
28 Oct 2025
Validated
6 Nov 2025
Decided
24 Dec 2025
Ward
Whetstone
Decision by
Delegated Decision
Postcode
N20 9JJ

Timeline

Dates from the published record

  1. 28 Oct 2025

    Received by Barnet

  2. 6 Nov 2025

    Validated

    Checked as complete and ready for consideration.

  3. 24 Dec 2025

    Decision issued: Refuse

  4. 10 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Studio 136 Architects Ltd Agent, an architecture practice registered in Berkhamsted

Active · incorporated 2000 · Berkhamsted

406 applications on PlanIndex · across 32 councils · 79% granted

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Documents

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

9 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 householder applications

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 40 Oakleigh Avenue London N20 9JJ

    26/1878/192 Submitted 19 May 2026 50 yards away

    Erection of a garden room

    Withdrawn Lawful development 6 docs

  • 40 Oakleigh Avenue London N20 9JJ

    26/1297/HSE Submitted 7 Apr 2026 50 yards away

    77% historically approved · decision due ~3 Jun

    Roof extension involving hip to gable, 3no. rear box dormers with juliette balcony to middle dormer, 3no. front facing rooflights and new side gable window

    Awaiting decision Householder Extension Loft or dormer +1 5 docs
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  • 30 Oakleigh Avenue London N20 9JH

    TPP/0714/25 Submitted 28 Oct 2025 50 yards away

    1 x Large Oak - Remove the two lowest branches and trunk growth. Remove major dead wood. Standing in Group G124 of Tree Preservation Order.

    Granted Trees 4 docs

  • 30 Oakleigh Avenue London N20 9JH

    TPP/0760/25 Submitted 14 Nov 2025 50 yards away

    1 x Large Oak - Remove three large dead branches in the low/mid canopy overhanging the neighbouring garden. Standing in Group G124 of Tree Preservation Order. (Exempt works)

    Decided Trees 4 docs

  • 59 Oakleigh Avenue London N20 9JG

    26/0245/HSE Submitted 22 Jan 2026 100 yards away

    77% historically approved · decision due ~20 Mar

    Single storey rear extension with two lantern rooflights, first floor side extension above the existing garage, and infill extension to the front between the garage and main dwelling at ground level. Extension to the existing second floor with associated roof alterations including 2no. side and 2no. front facing rooflights and new lantern rooflight. Re-location of existing windows and removal of chimney stack on side elevation

    Awaiting decision Householder Extension Loft or dormer +2 4 docs
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  • 3 Oakleigh Park South London N20 9JS

    26/2417/NMA Submitted 25 Jun 2026 100 yards away

    65% historically approved · decision due ~20 Aug

    Non material amendment to planning permission 26/1023/HSE dated 11/05/2026 for 'Single storey rear extension. Changes to fenestration including new side door and installation of double width garage door to return garage to original use' Amendments includes adding a window to the right hand elevation of the rear extension

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In Barnet

  • 26/3853/HSE Awaiting decision

    30 Goldsmith Avenue London NW9 7HB

    Single storey rear extension following demolition of the existing extension

    23 Oct 2026 Householder
  • 26/3827/HSE Awaiting decision

    43 Hermitage Lane London NW2 2HE

    Single storey rear extension with 3no. rooflights following demolition of the existing conservatory. Replacement front bay window and entrance porch. First floor rear juliette balcony. Changes to fenestration including new window openings and enlarged front rooflight

    22 Oct 2026 Householder
  • 26/3833/HSE Awaiting decision

    47 Holne Chase London N2 0QG

    Single storey rear extension. Replacement of single glazed windows with double glazing. Alterations to side/rear fenestration. Alterations and replacement of existing rear dormer window addition of 2no. side dormer windows and 3no. rooflights. Installation of cameras and wall lights. Replacement of the front entrance and garage doors, installation of timber side garden gates

    22 Oct 2026 Householder
  • 26/3841/HSE Awaiting decision

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    Received 22 Oct, published by the council 23 Oct 2026 Householder
  • 26/3815/HSE Awaiting decision

    17 Hurstwood Road London NW11 0AS

    Single storey rear extension

    21 Oct 2026 Householder