15 Haslemere Avenue London NW4 2PU

This site has had 2 applications since 2026.

• 26/2534/HSE Awaiting decision

  15 Haslemere Avenue London NW4 2PU

  Single storey front, side and rear extension with new patio area. Two storey side and rear extension with first floor juliette balcony with glass balustrade

  Submitted 6 Jul 2026 Householder

1. 28 Apr 2026

   Received by Barnet

2. 1 May 2026

   Validated

   Checked as complete and ready for consideration.

3. 25 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 26 June 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 lawful development applications in a median of 28 days. More in our guide to how long planning decisions take.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 31 Haslemere Avenue London NW4 2PU

  26/2487/HSE Submitted 1 Jul 2026 21m 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

  26/2534/HSE Submitted 6 Jul 2026 21m away

  77% historically approved · decision due ~4 Sep

  Single storey front, side and rear extension with new patio area. Two storey side and rear extension with first floor juliette balcony with glass balustrade

  Awaiting decision Householder Extension
  Small domestic

• 31 Haslemere Avenue London NW4 2PU

  26/0503/192 Submitted 9 Feb 2026 81m 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 81m 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 84m 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 135m 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

• 26/2679/192 Granted

  21 Myddelton Park London N20 0JH

  Single storey rear extension and increase in ridge height of existing rear outrigger (Amended description).

  20 Jul 2026 Lawful development
• 26/1907/191 Granted

  8 Golders Manor Drive London NW11 9HT

  Use of the property as a self-contained residential unit at ground floor level and the first and second floors as a 4-bedroom, 4-person House in Multiple Occupation (Sui Generis) (AMENDED DESCRIPTION)

  21 May 2026 Lawful development
• 26/2059/192 Refused

  Low Ridge Rowley Lane Barnet EN5 3HS

  Erection of a rear outbuilding

  3 Jun 2026 Lawful development
• 26/2066/192 Granted

  355 Hendon Way London NW4 3NB

  Roof extension involving rear dormer window and 3no. front facing rooflights. Removal of chimney on rear elevation (AMENDED DESCRIPTION)

  3 Jun 2026 Lawful development
• 26/2525/192 Granted

  39 Ridgeway Avenue Barnet EN4 8TN

  Single storey rear extension

  6 Jul 2026 Lawful development