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Planning application

40 Oakleigh Avenue London N20 9JJ

Awaiting decision Barnet 26/1297/HSE Householder Application

Works: Extension Loft or dormer Windows or glazing Domestic

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

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

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

As published by the council, reference 26/1297/HSE

Application record

Reference
26/1297/HSE
Type
Householder Application
Status
Pending Consideration
Received
7 Apr 2026
Validated
8 Apr 2026
Ward
Whetstone
Postcode
N20 9JJ

Site history

Applications at this address on the Barnet register

This site has had 2 applications since 2026.

  • 26/1878/192 Withdrawn

    40 Oakleigh Avenue London N20 9JJ

    Erection of a garden room

    Decided 17 Jul 2026 Lawful development

Timeline

Dates from the published record

  1. 7 Apr 2026

    Received by Barnet

  2. 8 Apr 2026

    Validated

    Checked as complete and ready for consideration.

  3. 25 Jul 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 3 June 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

    Barnet took a median of 45 days over the applications it decided in the last year.

Who's behind it

Company information only, from the register and Companies House

Method Studio Architecture Ltd Agent, an architecture practice registered in Chelmsford

Active · incorporated 2015 · Chelmsford

21 applications on PlanIndex · across 6 councils · 79% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

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

5 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.

Watch members (£5 a month) open the document list from here.

Open the documents

What happens while it is decided

This application is with Barnet for determination, against a statutory target of eight weeks. Over the last year Barnet decided householder applications in a median of 56 days. More in our guide to how long planning decisions take.

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

  • 36 Oakleigh Avenue London N20 9JJ

    25/4312/HSE Submitted 28 Oct 2025 50 yards away

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

    Refused Householder Extension Loft or dormer 9 docs
    Domestic

  • 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
    Small domestic

  • 61 Oakleigh Avenue London N20 9JG

    TPP/0772/25 Submitted 18 Nov 2025 100 yards away

    88% historically approved · decision due ~13 Jan

    1 x Weeping Willow (applicants ref. T1) - Remove deadwood throughout. Standing in T186 of Tree Preservation Order. 5 x London Plane (applicants ref. T3) - Reduce height by circa 1 metre, remove lower growth that isn't providing screen and is encroaching on lawn. Retain all other centre screening. Standing in Group G118 of Tree Preservation Order.

    Awaiting decision Trees 3 docs

In Barnet

  • 26/3978/HSE Awaiting decision

    222 Church Hill Road Barnet EN4 8PH

    Part single, part two storey side and rear extension

    Received 3 Nov, published by the council 4 Nov 2026 Householder
  • 26/3963/HSE Awaiting decision

    97 Morphou Road London NW7 1BG

    Alteration and extension to roof including insertion 2no. side facing rooflights

    Received 2 Nov, published by the council 3 Nov 2026 Householder
  • 26/3953/HSE Awaiting decision

    51 Bedford Avenue Barnet EN5 2ER

    Single storey rear extension with flat roof, 1no. rooflight and new access steps following demolition of the existing conservatory. Removal of the rear chimney stack. Changes to ground floor north side fenestration

    2 Nov 2026 Householder
  • 26/3955/HSE Awaiting decision

    56 Hampden Way London N14 5DX

    Creation of new basement/lower ground floor level, single storey rear extension, and level patio area with associated glass balustrade and steps to garden

    Received 2 Nov, published by the council 4 Nov 2026 Householder
  • 26/3947/HSE Awaiting decision

    20 Fallow Court Avenue London N12 0EB

    Single storey side and rear extension

    30 Oct 2026 Householder