31 Haslemere Avenue London NW4 2PU

This site has had 3 applications since 2026: 2 approved, 0 refused.

• 26/2487/HSE Decided

  31 Haslemere Avenue London NW4 2PU

  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.

  Submitted 1 Jul 2026 Householder
• 26/1092/HSE Granted

  31 Haslemere Avenue London NW4 2PU

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

  Decided 13 May 2026 Householder

1. 9 Feb 2026

   Received by Barnet

2. 6 Mar 2026

   Decision issued: Lawful

3. 10 Aug 2026

   Added to PlanIndex

Barnet granted permission on 6 March 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

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

  26/1092/HSE Submitted 23 Mar 2026 50 yards away

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

  Granted Householder Extension 11 docs
  Small domestic

• 31 Haslemere Avenue London NW4 2PU

  26/2487/HSE Submitted 1 Jul 2026 50 yards 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 50 yards away

  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

  Refused Householder Extension
  Small domestic

• 15 Haslemere Avenue London NW4 2PU

  26/1594/192 Submitted 28 Apr 2026 100 yards away

  Erection of a rear outbuilding

  Granted Lawful development 5 docs

• 9 Mayfield Gardens London NW4 2PY

  26/3754/HSE Submitted 16 Oct 2026 150 yards away

  77% historically approved · decision due ~11 Dec

  Part single, part two storey rear extension. Single side extension. New front porch. Alterations and extension to roof including side and rear dormer windows and front, side and rear rooflights

  Awaiting decision Householder Extension Loft or dormer +1
  Small domestic

• 9 Mayfield Gardens London NW4 2PY

  26/3760/HSE Submitted 16 Oct 2026 150 yards away

  77% historically approved · decision due ~11 Dec

  Part single part two storey side and rear extension. New front porch, Two storey front bay extension. Alterations to roof including 2no. side dormer windows, rear dormer window and front and side facing rooflights.

  Awaiting decision Householder Extension Loft or dormer +1
  Small 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).

  Received 20 Jul, published by the council 7 Aug 2026 Lawful development
• 26/1362/191 Refused

  145 Cotswold Gardens London NW2 1PL

  Use as a House in Multiple Occupation (HMO) for 6 people

  Received 14 Apr, published by the council 25 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)

  Received 21 May, published by the council 16 Aug 2026 Lawful development
• 26/2392/192 Refused

  6 Mostyn Road Edgware HA8 0JD

  New front hardstanding and vehicular access to provide off-street parking

  Received 23 Jun, published by the council 9 Aug 2026 Lawful development
• 26/2059/192 Refused

  Low Ridge Rowley Lane Barnet EN5 3HS

  Erection of a rear outbuilding

  Received 3 Jun, published by the council 16 Aug 2026 Lawful development