21 Myddelton Park London N20 0JH

1. 20 Jul 2026

   Received by Barnet

2. 7 Aug 2026

   Added to PlanIndex

3. 12 Aug 2026

   Decision issued: Lawful

Barnet granted permission on 12 August 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.

• 25 Myddelton Park London N20 0JH

  25/4533/HSE Submitted 13 Nov 2025 50 yards away

  Single storey side/rear extension to create link between existing outbuilding and main dwelling along with new front porch

  Granted Householder Extension 10 docs
  Small domestic

• 25 Myddelton Park London N20 0JH

  25/4215/192 Submitted 21 Oct 2025 50 yards away

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

  Granted Lawful development Extension Loft or dormer +1 10 docs

• 38 Queens Avenue London N20 0JD

  26/1888/192 Submitted 19 May 2026 150 yards away

  Roof extension involving rear dormer window with juliette balcony and 3no. front facing rooflights. Erection of a rear outbuilding following removal of the shed

  Granted Lawful development Extension Loft or dormer +1 7 docs
  Small domestic

• 38 Queens Avenue London N20 0JD

  26/1889/PNH Submitted 19 May 2026 150 yards away

  Single storey rear extension with a proposed maximum depth of 6.0m, maximum height of 3.34m and an eaves height of 3.0m

  Refused Prior approval Extension 10 docs
  Small domestic

• 38 Queens Avenue London N20 0JD

  26/2558/PNH Submitted 7 Jul 2026 150 yards away

  56% historically approved · decision due ~1 Sep

  Single storey rear extension with a proposed depth of 5m, maximum height of 3.25m and eaves height of 3m

  Awaiting decision Prior approval Extension 8 docs
  Small domestic

• 38 Queens Avenue London N20 0JD

  26/3044/HSE Submitted 19 Aug 2026 150 yards away

  77% historically approved · decision due ~14 Oct

  Single storey rear extension with 3no. rooflights following demolition of the existing shed and outrigger

  Decided Householder Extension Loft or dormer +1
  Small domestic

• 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
• 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)

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