P2026/1048/COL

1. 21 Apr 2026

   Received by Islington

2. 20 Jul 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

• P2026/1045/COL Awaiting decision

  Flat 31, 40 Danbury Street, London, N1 8JU

  Certificate of Lawfulness (Existing) to confirm the use of Flat 31 at first floor of 40 Danbury Street as a self-contained residential flat (Class C3)

  21 Apr 2026 0m away Lawful development
• P2026/1046/COL Awaiting decision

  Flat 10, 40 Danbury Street, London, N1 8JU

  Certificate of Lawfulness (Existing) to confirm the use of Flat 10 at ground floor of 40 Danbury Street as a self-contained residential flat (Class C3)

  21 Apr 2026 0m away Lawful development
• P2026/0951/FUL Granted

  42, Danbury Street, London N1 8JU

  Modification of existing roof access and erection of balustrade to create roof terrace

  10 Apr 2026 19m away Full applications
• P2026/0649/PRA Withdrawn

  32 St Peter's Street, London, N1 8JT

  Notification of Prior Approval for the change of use of basement level of existing commercial building (Class E) to residential accommodation to provide 1 x 1 bed 2 person residential unit (Class C3) under 'Class MA' of Schedule 2, Part 3 of the Town and Country Planning (General Permitted Development) Order (GPDO) 2015 (as amended).

  9 Mar 2026 25m away Prior approval
• P2026/0133/TRE Granted

  77 St Peter's Street, London, N1 8JR

  1 x Bay - Remove stem overhanging neighbouring garden back to trunk Remove/ reduce branches overhaning neigbours back to stem Remove secondary stem overhanging roof Remove branches that go towards roof Carry out trimming of branches over 77, St Peter Street See attached pruning plan Maintenance works in line with good arboricultural practice

  19 Jan 2026 62m away Trees
• P2026/0207/FUL Granted

  11 Allingham Street London N1 8NX

  Replacement of single glazed timber windows with double glazed timber windows, to front and rear elevation

  28 Jan 2026 75m 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