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

Barnet granted permission on 5 June 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.

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

  26/0893/NMA Submitted 9 Mar 2026 50 yards 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  Withdrawn Amendments Extension Loft or dormer 3 docs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 50 yards 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 50 yards away

  93% 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

• 12 Elmfield Road London N2 8EB

  23/3571/192 Submitted 17 Aug 2023 50 yards away

  Roof extension involving rear dormer window with juliette balcony and 3no. front facing rooflights

  Granted Lawful development Extension Loft or dormer +1 17 docs

• 391 Long Lane London N2 8JN

  21/5608/192 Submitted 21 Oct 2021 50 yards away

  Roof extension involving L shaped rear dormer window and 2no front facing rooflights

  Granted Lawful development Extension Loft or dormer +1 20 docs

• Outside 2 Challoner Close London N2 8NL

  25/4936/LIC Submitted 9 Dec 2025 150 yards away

  Installation of 1no. 12m light wooden pole

  Refused 2 docs

• 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