17A Dollis Avenue London N3 1UD

1. 26 May 2026

   Received by Barnet

2. 25 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 21 July 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 44 days over the applications it decided in the last year.

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.

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.

• 63 Church Crescent London N3 1BL

  26/0866/192 Submitted 6 Mar 2026 104m away

  Roof extension involving hip to gable and rear dormer window

  Granted Lawful development Extension Loft or dormer +1 8 docs

• 63 Church Crescent London N3 1BL

  26/0865/HSE Submitted 6 Mar 2026 104m away

  Single storey side and rear extension following demolition of the existing garage

  Granted Householder Extension Demolition 11 docs
  Small domestic

• 63 Church Crescent London N3 1BL

  26/2011/NMA Submitted 29 May 2026 104m away

  69% historically approved · decision due ~24 Jul

  Non material amendment to planning permission 26/0865/HSE dated 28/04/2026 for `Single storey side and rear extension following demolition of the existing garage.` Amendments include removal of the proposed window and door and addition of a side rooflight

  Awaiting decision Amendments Extension Loft or dormer +2 6 docs
  Small domestic

• 6 Kingswood Park London N3 1UG

  26/3279/HSE Submitted 8 Sep 2026 113m away

  77% historically approved · decision due ~4 Nov

  Single storey front infill extension and relocation of existing front door including new access steps, alteration to existing garage door. 2no. single storey rear extensions with pitched roof following demolition of the existing conservatory. New side lightwell to basement level. Roof alterations, including raising of front gable pitch, formation of crown roof, 1no. front and 2no. rear dormer windows and new front window and 3 no. crown roof rooflights. Alterations to fenestration (Amended)

  Awaiting decision Householder Extension Loft or dormer +3
  Small domestic

• 9 Dollis Avenue London N3 1UD

  TPP/0797/21 Submitted 5 Oct 2021 119m away

  1 x Common Lime (applicant's ref. T1) - Fell to ground level and grind out stump. Standing in Group G2 of Tree Preservation Order Provide replacement planting as follows: REPLACEMENT SPECIFICATION Location: Front of property Proposed species: Liquidambar styraciflua 'Worplesdon' Size: 14-16cm Extra Heavy Standard Type: Containerised or air pot container

  Refused Trees 4 docs

• 3 Grenville Close London N3 1UF

  26/1436/NMA Submitted 17 Apr 2026 131m away

  Non-material amendments to planning permission reference 26/0029/HSE dated 28/03/26 for 'Single Storey rear infill extension, first floor side extension.' Amendments include changes to fenestration to front and rear elevations

  Granted Amendments Extension Windows or glazing 4 docs
  Small domestic

• 26/3422/HSE Awaiting decision

  Revelstroke 28 Totteridge Village London N20 8JN

  Construction of a swimming pool and associated hard and soft landscaping following demolition of the existing shed including new access steps. Alterations to the ground level. Replacement of an existing timber decking terrace with a paved terrace.

  18 Sep 2026 Householder
• 26/3396/HSE Awaiting decision

  43 Dukes Avenue London N3 2DE

  Single storey rear, part two storey side extension with 1no. rooflight following the demolition of existing shed. Roof extension with rear dormer window, 1no. front, 3no. side facing rooflights and roof windows to the front and side roof slopes. Installation of solar panels to side elevation of roof

  17 Sep 2026 Householder
• 26/3410/HSE Awaiting decision

  54 Ferney Road Barnet EN4 8LE

  Single storey rear extension with alteration to the raised terrace area including new access steps to garden

  17 Sep 2026 Householder
• 26/3415/HSE Awaiting decision

  11 Downage London NW4 1AS

  Alterations and extensions to the roof including rear dormer window and the partial removal of the roof of the first floor rear extension, creation of a new crown roof over main roof and rear extension, 1no. front, 1no. side, 1no. rear facing rooflight and 1no. on crown roof

  Received 17 Sep, published by the council 18 Sep 2026 Householder
• 26/3382/HSE Awaiting decision

  11 Layfield Crescent London NW4 3UJ

  Part single, part two storey rear extension with flat roof and 1no. skylight

  Received 16 Sep, published by the council 18 Sep 2026 Householder