49 Temple Avenue London N20 9EL

1. 21 Oct 2025

   Received by Barnet

2. 17 Nov 2025

   Decision issued: Lawful

3. 10 Aug 2026

   Added to PlanIndex

The council has decided this application; the published outcome sits in the record above and the decision notice on the council portal carries the detail, including any conditions.

If permission was granted, work must normally begin within three years of the decision. If it was refused, the applicant can appeal within the statutory time limit or submit a revised scheme.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• Netherlands Road Barnet EN5 1DL

  TPP/0303/26 Submitted 28 May 2026 52m away

  87% historically approved · decision due ~23 Jul

  Works affecting 8 x London Plane - Intallation of new 33KV power cable beneath Netherlands Road, EN5 1DL. Standing in Group G1 of Tree Preservaion Order.

  Awaiting decision Trees 6 docs

• On Grass Outside 74 - 76 Buckingham Avenue London N20 9DH

  25/3476/LIC Submitted 21 Aug 2025 64m away

  Installation of 1no. 12m wooden pole

  Withdrawn 1 doc

• 4 Holland Close Barnet EN5 1DJ

  26/1828/192 Submitted 15 May 2026 70m away

  79% historically approved · decision due ~10 Jul

  Roof extension involving rear dormer window and 1no. rear and 3no. front facing rooflights

  Awaiting decision Lawful development Extension Loft or dormer +1 9 docs

• 14 Mallard Close Barnet EN5 1DH

  25/4462/HSE Submitted 10 Nov 2025 105m away

  Conversion of the existing garage into habitable room, insertion of window to replace garage door. Alterations to rear fenestration including new french doors and new window

  Granted Householder Windows or glazing 7 docs
  Domestic

• 101 Chandos Avenue London N20 9EG

  26/0335/192 Submitted 28 Jan 2026 144m away

  Roof extension involving partial hip to gable to either side, rear dormer window with juliette balcony and 3no. front facing rooflights. Removal of chimney stacks

  Decided Lawful development Extension Loft or dormer +1 11 docs

• 118 Netherlands Road Barnet EN5 1BX

  25/3972/HSE Submitted 1 Oct 2025 155m away

  77% historically approved · decision due ~27 Nov

  Part single, part two storey side and rear extension including a lantern rooflight to ground floor rear roof, following demolition of the existing lean to and rear garage. Associated alterations and extensions to roof including rear dormer window, and 1no. rooflight to front, rear and side roofslopes. Alterations to hard and soft landscaping to rear garden including new rear patio

  Awaiting decision Householder Extension Loft or dormer +2 23 docs
  Domestic

• 26/2679/192 Decided

  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 Decided

  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 Decided

  Low Ridge Rowley Lane Barnet EN5 3HS

  Erection of a rear outbuilding

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

  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
• 26/1663/192 Decided

  152 Deans Lane Edgware HA8 9NT

  Change of use from single family dwellinghouse (Class C3a) to supported living accommodation Class C3b)

  5 May 2026 Lawful development