17 New Trinity Road London N2 8EE

1. 18 May 2026

   Received by Barnet

2. 5 Jun 2026

   Decision issued: Lawful

3. 16 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

• Ground Floor Flat 21 New Trinity Road London N2 8EE

  26/0893/NMA Submitted 9 Mar 2026 9m away

  Non material amendment to planning permission 25/3358/FUL dated 06/10/2025 for 'Single storey side/rear extension with 5no. rooflights' Amendments include enclosing the proposed lightwell

  Withdrawn Amendments Extension Loft or dormer 3 docs
  Small domestic

• Ground Floor Flat 21 New Trinity Road London N2 8EE

  25/3358/FUL Submitted 12 Aug 2025 9m away

  Single storey rear extension with 5no. rooflights

  Granted Full applications Extension Loft or dormer 7 docs
  Small domestic

• Ground Floor Flat 21 New Trinity Road London N2 8EE

  26/1289/S73 Submitted 7 Apr 2026 9m away

  95% historically approved · decision due ~2 Jun

  Variation of condition 1 (Approved plans) pursuant to planning permission 25/3358/FUL dated 06/10/2025 for 'Single storey side/rear extension with 5no. rooflights' Amendments includes removal of the lightwell

  Awaiting decision Conditions Extension Loft or dormer 4 docs
  Small domestic

• Outside 2 Challoner Close London N2 8NL

  25/4936/LIC Submitted 9 Dec 2025 120m away

  Installation of 1no. 12m light wooden pole

  Decided 2 docs

• 456 Long Lane London N2 8JL

  26/1050/192 Submitted 18 Mar 2026 155m away

  79% historically approved · decision due ~13 May

  Roof extension involving rear dormer window with juliette balcony

  Awaiting decision Lawful development Extension Loft or dormer +1 6 docs

• 456 Long Lane London N2 8JL

  26/2154/HSE Submitted 10 Jun 2026 155m away

  Single storey rear/side extension

  Refused Householder Extension 8 docs
  Small domestic

• 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
• 26/2025/192 Decided

  18 Hale Drive London NW7 3DU

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

  1 Jun 2026 Lawful development