P2026/0896/COL

1. 2 Apr 2026

   Received by Islington

2. 20 May 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

• P2026/0900/FUL Granted

  9 Herrick Road, London, N5 2JX

  Erection of a mansard roof extension.

  2 Apr 2026 0m away Householder
• P2026/0737/FUL Awaiting decision

  Garage Adjacent To 1 Herrick Road, London, N5 2JX

  Demolition of existing single-storey residential garage and construction of a one-bedroom, two-person dwelling.

  17 Mar 2026 26m away Full applications
• P2023/0938/FUL Awaiting decision

  6 Herrick Road, London, N5 2JX

  Erection of a roof extension to part of the existing valley roof and a two storey upward extension above the existing closet wing

  3 Apr 2023 30m away Householder
• P2026/0541/FUL Granted

  66 Riversdale Road, London, N5 2JZ

  To change the existing loft front roof to a mansard roof with two dormer windows.

  25 Feb 2026 59m away Householder
• P2026/0077/FUL Granted

  34 Wyatt Road, London, N5 2JU

  Retrospective application for erection of a single-storey rear infill extension and new rear window on ground floor.

  12 Jan 2026 68m away Householder
• P2025/3432/FUL Awaiting decision

  First and Second Floor Flat, 83, Riversdale Road, London, N5 2ST

  (Part Retrospective) Retention of existing roof terrace above two-storey rear outrigger with a reduced area and new timber balustrade

  8 Dec 2025 72m 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