23 Herrick Road, London, N5 2JX

1. 18 Sep 2025

   Received by Islington

2. 24 Sep 2025

   Validated

   Checked as complete and ready for consideration.

3. 4 Nov 2025

   Decision issued: Approve with no conditions

4. 8 Aug 2026

   Added to PlanIndex

Islington granted permission on 4 November 2025, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 9 Herrick Road, London, N5 2JX

  P2026/0896/COL Submitted 2 Apr 2026 50 yards away

  Certificate of Lawfulness (Proposed) for the erection of a roof extension over t

  Granted Lawful development Extension

• 9 Herrick Road, London, N5 2JX

  P2026/0900/FUL Submitted 2 Apr 2026 50 yards away

  Erection of a mansard roof extension.

  Granted Householder Extension Loft or dormer
  Domestic

• 37 Herrick Road, London, N5 2JX

  P2025/2661/FUL Submitted 19 Sep 2025 50 yards away

  Erection of a single-storey rear extension with new door to outrigger.

  Granted Householder Extension
  Small domestic

• 6 Herrick Road, London, N5 2JX

  P2023/0938/FUL Submitted 3 Apr 2023 50 yards away

  93% historically approved · decision due ~29 May

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

  Awaiting decision Householder Extension 6 docs
  Domestic

• 32 Wyatt Road, London, N5 2JU

  P2023/0845/FUL Submitted 23 Mar 2023 50 yards away

  Construction of a mansard roof extension with associated internal alterations

  Granted Householder Extension Loft or dormer 6 docs
  Domestic

• 32 Wyatt Road, London, N5 2JU

  P2023/0834/COLP Submitted 22 Mar 2023 50 yards away

  Certificate of Lawfulness (Proposed) for a roof extension over the existing outrigger

  Granted Lawful development Extension 6 docs

• P2026/2548/COL Status unknown

  Flat 5, St Peter's Street Mews, London, N1 8JF

  Certificate of Lawful (Existing) Use for the use of the ground floor property kn

  Received 28 Sep, published by the council 29 Sep 2026 Lawful development
• P2026/2522/COL Status unknown

  Flat 6, 1-2 St Peter's Street Mews, London, N1 8JF

  Certificate of Lawful (Existing) Use for the use of Flat 6 as a self-contained r

  Received 28 Sep, published by the council 29 Sep 2026 Lawful development
• P2026/2549/COL Status unknown

  Flat A, 42 Dartmouth Park Hill, London, NW5 1HN

  Certificate of Lawfulness (Existing) for the conversion of Flat A from a 1-bedro

  Received 25 Sep, published by the council 28 Sep 2026 Lawful development
• P2026/2266/COL Granted

  32 Gillespie Road, London, N5 1LN

  Erection of rear dormer roof extensions to main and outrigger roofs, installatio

  Received 27 Aug, published by the council 2 Sep 2026 Lawful development
• P2026/2525/COL Status unknown

  10A Rock Street, London, N4 2DN

  Certificate of Lawfulness (Proposed) for use of the site as a 5-person small-sca

  Received 24 Sep, published by the council 25 Sep 2026 Lawful development