15 Haslemere Avenue London NW4 2PU

This site has had 2 applications since 2026.

• 26/1594/192 Awaiting decision

  15 Haslemere Avenue London NW4 2PU

  Erection of a rear outbuilding

  Submitted 28 Apr 2026 Lawful development

1. 6 Jul 2026

   Received by Barnet

2. 10 Jul 2026

   Validated

   Checked as complete and ready for consideration.

3. 1 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 4 September 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.

• 31 Haslemere Avenue London NW4 2PU

  26/2487/HSE Submitted 1 Jul 2026 0m away

  77% historically approved · decision due ~26 Aug

  Single storey front extension with new porch with canopy and front bay window. Part single, part two storey side and rear wraparound extensions with new rear raised terrace area with access steps to garden, 1no. rooflight and new roof. New hardstanding and alteration to the existing vehicular access to off-street parking. New side gate. Roof extension involving hip to gable to both sides, rear dormer windows, 3no. front and 1no. rear facing rooflights and new side gable window. Changes to fenestration.

  Decided Householder Extension Loft or dormer +2
  Small domestic

• 15 Haslemere Avenue London NW4 2PU

  26/1594/192 Submitted 28 Apr 2026 21m away

  80% historically approved · decision due ~26 Jun

  Erection of a rear outbuilding

  Awaiting decision Lawful development 4 docs

• 31 Haslemere Avenue London NW4 2PU

  26/0503/192 Submitted 9 Feb 2026 61m away

  Roof extension involving raised gables, rear dormer window, 3no. front facing rooflights and new side gable window

  Granted Lawful development Extension Loft or dormer +1 5 docs

• 31 Haslemere Avenue London NW4 2PU

  26/1092/HSE Submitted 23 Mar 2026 61m away

  Single storey front and side extension and part single, part two storey rear extension

  Granted Householder Extension 11 docs
  Small domestic

• 93C Shirehall Park London NW4 2QU

  26/2352/191 Submitted 22 Jun 2026 101m away

  79% historically approved · decision due ~19 Aug

  Single storey side extension

  Awaiting decision Extension
  Small domestic

• 66 Brentmead Place London NW11 9LJ

  25/3761/FUL Submitted 12 Sep 2025 156m away

  61% historically approved · decision due ~7 Nov

  Change of use from a single dwellinghouse (Use Class C3) to a 6 bed HMO (House in Multiple Occupation (Use Class C4) including part single, part two storey rear extension, roof extension involving rear dormer window and 2no. front facing rooflights. Associated car and cycle parking, external amenity space and refuse and recycling storage

  Awaiting decision Full applications Extension Loft or dormer +1 5 docs
  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

  17 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

  16 Sep 2026 Householder