1 Highview Gardens London N3 3EX

1. 13 May 2026

   Received by Barnet

2. 8 Jul 2026

   Decision issued: Lawful

3. 16 Aug 2026

   Added to PlanIndex

Barnet granted permission on 8 July 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.

• 82 Kings Close London NW4 2JT

  26/0528/HSE Submitted 10 Feb 2026 100 yards away

  Roof extension involving hip to gable, rear dormer window with 2no. front facing rooflights

  Refused Householder Extension Loft or dormer +1 6 docs
  Domestic

• 82 Kings Close London NW4 2JT

  25/4879/192 Submitted 4 Dec 2025 100 yards away

  Roof extension involving hip to gable, rear dormer window with 2no. front facing rooflights

  Refused Lawful development Extension Loft or dormer +1 5 docs

• 82 Kings Close London NW4 2JT

  25/4881/HSE Submitted 4 Dec 2025 100 yards away

  77% historically approved · decision due ~29 Jan

  Part single, part two storey rear extension

  Awaiting decision Householder Extension 4 docs
  Domestic

• 49 Southbourne Crescent London NW4 2JX

  26/1639/HSE Submitted 30 Apr 2026 150 yards away

  Lower ground floor storage area, part single, part two-storey, front side and rear extension with associated patio steps following the demolition of the existing garage. Roof extension involving side dormer window, 2no. front and 1no. rear facing rooflight and new side gable window

  Granted Householder Extension Loft or dormer +2 19 docs
  Domestic

• 40 Boyne Avenue London NW4 2JN

  26/0796/PNH Submitted 2 Mar 2026 150 yards away

  56% historically approved · decision due ~28 Apr

  Single storey rear extension with a proposed depth of 4.50m, maximum height of 3.00m and eaves height of 3.00m

  Awaiting decision Prior approval Extension 3 docs
  Small domestic

• 18 Boyne Avenue London NW4 2JN

  26/2816/PNH Submitted 30 Jul 2026 200 yards away

  56% historically approved · decision due ~24 Sep

  2no single storey rear extensions with a maximum depth of 6.00m, maximum height of 3.90m and an eaves height 3.00m

  Awaiting decision Prior approval Extension
  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