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Planning application

P2025/0612/COL

128 St John Street, London EC1V 4JS

Awaiting decision Islington Certificate of Lawfulness (Existing)

Proposal

Application for a Certificate of Lawfulness (Existing) for the use of the upper floors as three residential self contained flats (Class C3).

As published by the council, reference P2025/0612/COL

Timeline

Dates from the published record

  1. 28 Feb 2025

    Received by Islington

  2. 9 Apr 2025

    Validated

    Checked as complete and ready for consideration.

  3. 25 Jul 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

What happens while it is decided

The process from here

This application is with Islington for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

About lawful development applications

How this application type works

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

Nearby applications

Within 500 metres

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  • P2026/1098/LBC Granted

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  • P2026/1081/FUL Awaiting decision

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In Islington

  • 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