42 Haslemere Avenue Barnet EN4 8EZ

This site has had 2 applications since 2025.

• 25/4857/192 Awaiting decision

  42 Haslemere Avenue Barnet EN4 8EZ

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

  Submitted 4 Dec 2025 Lawful development

1. 4 Dec 2025

   Received by Barnet

2. 10 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 29 January 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 46 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.

• 42 Haslemere Avenue Barnet EN4 8EZ

  25/4857/192 Submitted 4 Dec 2025 50 yards away

  80% historically approved · decision due ~30 Jan

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

  Awaiting decision Lawful development Extension Loft or dormer +1 6 docs

• 46 Haslemere Avenue Barnet EN4 8EZ

  26/1153/192 Submitted 26 Mar 2026 50 yards away

  Roof extension involving hip to gable, replacement rear dormer window with juliette balcony and new side gable window

  Granted Lawful development Extension Loft or dormer +1 11 docs

• 46 Haslemere Avenue Barnet EN4 8EZ

  26/1165/HSE Submitted 26 Mar 2026 50 yards away

  Single storey rear extension with extended raised patio area with glass balustrade and external steps. Part conversion of the existing garage into a habitable room, including alterations to roof

  Granted Householder Extension 14 docs
  Small domestic

• 32 Haslemere Avenue Barnet EN4 8EZ

  26/1095/HSE Submitted 23 Mar 2026 50 yards away

  77% historically approved · decision due ~27 May

  Single storey front porch and rear extenision with access steps and patio area. Conversion of the existing garage into habitable room with new pitch roof and insertion of window to replace garage door

  Awaiting decision Householder Extension Windows or glazing 8 docs
  Small domestic

• 32 Haslemere Avenue Barnet EN4 8EZ

  25/5105/PNH Submitted 18 Dec 2025 50 yards away

  56% historically approved · decision due ~13 Feb

  Single-storey rear extension measuring a maximum 6.0m in depth from rear wall, 3.85m maximum height and eaves height

  Awaiting decision Prior approval Extension 9 docs
  Small domestic

• 32 Haslemere Avenue Barnet EN4 8EZ

  26/2512/192 Submitted 3 Jul 2026 100 yards away

  79% historically approved · decision due ~28 Aug

  Roof extension involving hip to gable, rear dormer window, 3no. front-facing rooflights and new side gable window following the removal of the chimney. Erection of a rear outbuilding. (Amended Description)

  Awaiting decision Extension Loft or dormer +1

• 26/3853/HSE Awaiting decision

  30 Goldsmith Avenue London NW9 7HB

  Single storey rear extension following demolition of the existing extension

  23 Oct 2026 Householder
• 26/3856/HSE Awaiting decision

  229 Hale Drive London NW7 3EH

  Single storey rear extension

  23 Oct 2026 Householder
• 26/3827/HSE Awaiting decision

  43 Hermitage Lane London NW2 2HE

  Single storey rear extension with 3no. rooflights following demolition of the existing conservatory. Replacement front bay window and entrance porch. First floor rear juliette balcony. Changes to fenestration including new window openings and enlarged front rooflight

  22 Oct 2026 Householder
• 26/3833/HSE Awaiting decision

  47 Holne Chase London N2 0QG

  Single storey rear extension. Replacement of single glazed windows with double glazing. Alterations to side/rear fenestration. Alterations and replacement of existing rear dormer window addition of 2no. side dormer windows and 3no. rooflights. Installation of cameras and wall lights. Replacement of the front entrance and garage doors, installation of timber side garden gates

  22 Oct 2026 Householder
• 26/3841/HSE Awaiting decision

  Manor House West Heath Close London NW3 7NJ

  New metal framed pergola to upper ground floor rear terrace

  Received 22 Oct, published by the council 23 Oct 2026 Householder