P2021/1669/COLP

1. 8 Jun 2021

   Received by Islington

2. 2 Aug 2021

   Decision issued: Approve with no conditions

3. 28 Jul 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

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

• P2025/1024/TRE Awaiting decision

  Parkland View, Blythwood Road, London

  Tree location - front garden Access - open access T6 - 87DBH Sycamore Repollard to original pollard points.

  7 Apr 2025 79m away Trees
• P2026/0475/FUL Granted

  6 Blythwood Road, London, N4 4EU

  Erection of basement extension with front lightwell, replacement front boundary wall and a bin store.

  19 Feb 2026 79m away Householder
• P2023/0438/PRA Granted

  55 Crouch Hill , London, N4 4AJ

  Notification of Prior Approval (Householder) for the erection of single storey rear extension (6m in depth, maximum height of 3m and eaves height of 3m)

  9 Feb 2023 139m away Prior approval
• P2026/0202/FUL Granted

  Flat C, 30 Blythwood Road, London, N4 4EU

  Reconstruction of the main roof with raising of the ridgeline with two front rooflights, construction of a rear dormer extension and rear rooflight with general refurbishment of the flat and internal reconfiguration.

  27 Jan 2026 156m away Full applications
• P2026/0829/FUL Granted

  45 Crouch Hill, London, N4 4AJ

  Erection of a full width rear extension at ground and first floor levels with an associated new side window.

  27 Mar 2026 168m away Full applications
• P2026/0636/FUL Granted

  Flat A, 10 Highcroft Road, London, N19 3AQ

  Erection of single storey rear wrap-around extension.

  9 Mar 2026 172m away Full applications

• P2026/1005/COL Granted

  505A Hornsey Road, London

  Certificate of Lawfulness (Existing) for the use of the first, second and third floors as a 6-room large HMO (Use Class Sui Generis)

  15 Apr 2026 Lawful development
• P2026/1434/COL Granted

  9 Alwyne Square, London, N1 2JX

  Installation of 3 rooflights in the rear roof slope.

  3 Jun 2026 Lawful development
• P2026/0980/COL Granted

  4A Cowcross Street, London, EC1M 6DR

  Certificate of Lawful (Existing) development for the use of the first, second and third floors as three self-contained studio flats (Class C3)

  14 Apr 2026 Lawful development
• P2026/1324/COL Granted

  Gough House, 1 Windsor Street, London, N1 8QA

  Certificate of Lawfulness (proposed) for the installation of low-level play equipment, seating, planter with trellis, grass matting and a self-closing child-safety gate fixed to existing metal hoop-top fencing.

  21 May 2026 Lawful development
• P2026/1943/COL Awaiting decision

  49, Linton Street, London, N1 7AN

  Certificate of Lawfulness (Proposed) for the construction of a garden studio/outbuilding in rear garden.

  21 Jul 2026 Lawful development