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Planning application

26/1297/HSE

40 Oakleigh Avenue London N20 9JJ

Awaiting decision Barnet Householder Application

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

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

    The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

What happens while it is decided

The process from here

This application is with Barnet for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

About householder applications

How this application type works

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

Nearby applications

Within 500 metres

  • 26/1389/192 Decided

    65 Oakleigh Avenue London N20 9JG

    Erection of a rear outbuilding

    16 Apr 2026 109m away Lawful development
  • 26/2417/NMA Awaiting decision

    3 Oakleigh Park South London N20 9JS

    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

    25 Jun 2026 114m away Amendments
  • 26/2186/192 Awaiting decision

    65 Oakleigh Avenue London N20 9JG

    Erection of a rear outbuilding

    11 Jun 2026 139m away Lawful development
  • 26/1578/CON Awaiting decision

    The Mews Cottage 20 And A Half Oakleigh Park South London N20 9JU

    Submission of details of condition 4 (Cycle parking/storage) 5 (Refuse storage/collection) 9 (Enclosure/boundary treatment) pursuant to planning permission 26/0724/FUL dated 22/04/2026

    27 Apr 2026 159m away Conditions
  • TPP/0273/26 Awaiting decision

    42 Oakleigh Park North London N20 9AR

    3 x Pine - Reduce the overhang to the drive by 2.0m back to growth points. Reduce the overhang to the neigbours drive by 2.0m back to growth points. Standing in Group G49 of Tree Preservation Order.

    13 May 2026 164m away Trees
  • 26/1148/HSE Awaiting decision

    3 Oakleigh Park South London N20 9JS

    Single storey rear extension. Changes to fenestration including installation of double width garage door to return garage to original use and removal of side window. (AMENDED DESCRIPTION)

    26 Mar 2026 184m away Householder

In Barnet

  • 26/2837/HSE Awaiting decision

    26 The Drive Barnet EN5 4JQ

    Single storey side and rear extension with 7no. rooflights

    31 Jul 2026 Householder
  • 26/2840/HSE Awaiting decision

    19 Wildwood Road London NW11 6UL

    Replacement of the existing front door, double glazing to existing windows and internal secondary glazing to front elevations; roof covering replacements, soffit and gutter repairs; security cameras, garden shed repairs and repainting, rear boundary hedges to 2.5m with concealed metal fencing

    31 Jul 2026 Householder
  • 26/2813/HSE Awaiting decision

    3 Delamere Gardens London NW7 3EA

    Single storey front extension incorporating a front porch, raising existing side extension floor level to match main house level, new roof with increased height to the side extension and 2no. rooflights, single storey rear extension with 4no. rooflights with new patio area, access steps to garden and hard and soft landscaping. Changes to fenestration: replacement of existing windows

    30 Jul 2026 Householder
  • 26/2812/HSE Awaiting decision

    60 Millway London NW7 3RA

    Two storey side extension linking to house and single storey rear infill extension following demolition of the existing garage. Associated alterations to roof

    30 Jul 2026 Householder
  • 26/2803/HSE Awaiting decision

    15 Poynings Way London N12 7LP

    Part single, part two storey side and rear extension. Conversion and extension of the existing garage, insertion of window to replace garage door. New front porch

    29 Jul 2026 Householder