P2026/0895/COL

1. 2 Apr 2026

   Received by Islington

2. 9 Jun 2026

   Decision issued: Approve with no conditions

3. 25 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

• P2026/1106/FUL Granted

  61 Chatterton Road, London, N4 2EA

  Construction of a mansard roof extension.

  27 Apr 2026 55m away Householder
• P2026/0272/FUL Granted

  First And Second Floor Flat, 15 Chatterton Road, London, N4 2EA

  Erection of a mansard roof extension.

  3 Feb 2026 60m away Full applications
• P2026/0329/FUL Granted

  66 Chatterton Road, London, N4 2DZ

  Erection of a ground floor rear side extension

  6 Feb 2026 81m away Householder
• P2021/1619/COLP Granted

  20 Gillespie Road, London, N5 1LN

  Certificate of Lawfulness for the erection of a L-shaped rear roof dormer extension with the addition of two Velux rooflights to the front roof slope.

  4 Jun 2021 82m away Lawful development
• P2023/0412/PRA Granted

  61 Romilly Road, London, N4 2QY

  Notification of Prior Approval (Householder) for the erection of a single-storey rear extension to infill the space between the rear elevation of the dwelling and rear elevation of the existing outrigger. The total height of the proposed extension is 2.93 metres, the width is 1.49 metres and the length is 5.97 metres.

  8 Feb 2023 84m away Prior approval
• P2026/1087/FUL Awaiting decision

  72 Romilly Road, London, N4 2QX

  Proposed single storey infill rear/side wraparound extension following demolition of existing extension.

  27 Apr 2026 85m away Householder

• 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