76 Windermere Avenue London N3 3RA

1. 25 Jun 2026

   Received by Barnet

2. 29 Jun 2026

   Validated

   Checked as complete and ready for consideration.

3. 9 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 24 August 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 42 days over the applications it decided in the last year.

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.

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

• 33 Kingsgate Avenue London N3 3DH

  25/5029/192 Submitted 15 Dec 2025 162m away

  79% historically approved · decision due ~10 Feb

  Roof extension involving rear dormer window and 3no. front facing rooflights. New front porch and front window. Erection of a rear outbuilding with terrace area

  Awaiting decision Lawful development Extension Loft or dormer +1 24 docs
  Small domestic

• 33 Kingsgate Avenue London N3 3DH

  26/2232/HSE Submitted 15 Jun 2026 162m away

  77% historically approved · decision due ~12 Aug

  Part single, part two storey side and rear extension following demolition of existing single storey side extension. Roof extension including rear dormer window and 4no. front facing rooflights and 1no. rear facing rooflight. New front porch with an associated relocation of front door. Removal of 1no. chimney. Alterations to hard and soft landscaping including new rear terrace with associated level changes and provision of off-street parking space to front garden. Alterations to fenestration (Amended Description and Plans).

  Awaiting decision Householder Extension Loft or dormer +2 31 docs
  Small domestic

• 33 Kingsgate Avenue London N3 3DH

  25/5179/PNH Submitted 29 Dec 2025 167m away

  57% historically approved · decision due ~3 Mar

  Single storey rear extension with a proposed depth of 5.00 metres, maximum height of 3.28 metres and eaves height of 2.91 metres.

  Awaiting decision Prior approval Extension 22 docs
  Small domestic

• 35 Orchard Avenue London N3 3NL

  26/0433/192 Submitted 5 Feb 2026 169m away

  79% historically approved · decision due ~2 Apr

  Roof extension involving hip to gable, rear dormer window, 1no. rear and 2no. front facing rooflights and new side gable window

  Awaiting decision Lawful development Extension Loft or dormer +1 7 docs

• 35 Orchard Avenue London N3 3NL

  26/0434/HSE Submitted 4 Feb 2026 169m away

  77% historically approved · decision due ~2 Apr

  Single storey side and rear extension with 1no. rooflight and extension of the existing raised patio and associated balustrade and rear access steps following demolition of the existing garage and extension

  Awaiting decision Householder Extension Loft or dormer +1 7 docs
  Small domestic

• 35 Orchard Avenue London N3 3NL

  25/3971/192 Submitted 1 Oct 2025 169m away

  79% historically approved · decision due ~26 Nov

  Roof extension involving hip to gable, rear dormer window, 1no. rear and 2no. front facing rooflights and new side gable window

  Awaiting decision Lawful development Extension Loft or dormer +1 7 docs

• 26/3235/HSE Awaiting decision

  26 Mount Pleasant Barnet EN4 9HH

  Replace existing flat roof at ground floor rear elevation with pitched roof and 2no. rooflights

  4 Sep 2026 Householder
• 26/3222/HSE Awaiting decision

  46 Michleham Down London N12 7JN

  Single storey side/rear extension with 3no. rooflights following demolition of the existing storage/utility structure. Changes to fenestration

  3 Sep 2026 Householder
• 26/3219/HSE Awaiting decision

  53 Tudor Road Barnet EN5 5NW

  First floor rear extension with front and rear rooflights. Roof extension over existing garage

  2 Sep 2026 Householder
• 26/3210/HSE Awaiting decision

  47 Pattison Road London NW2 2HL

  New front vehicular access to provide off-street parking. Removal of existing gate and shed, alterations to the existing front boundary wall and installation of close board fencing panels.

  2 Sep 2026 Householder
• 26/3211/HSE Awaiting decision

  25 The Ridgeway London N11 3LG

  Single storey rear extension with 3no. rooflights following the demolition of existing conservatory

  2 Sep 2026 Householder