Haven House, 280 Holly Park, London, N4 4AQ

This site has had 3 applications since 2026: 2 approved, 0 refused.

• P2026/0344/TRE Granted

  Haven House, 280 Holly Park, London, N4 4AQ

  T1 Oak tree: Reduce lateral spread adjacent to building by 3m to suitable growt

  Decided 12 Feb 2026 Trees
• P2026/0040/TRE Awaiting decision

  Haven House, 280 Holly Park, London, N4 4AQ

  T1 Oak tree: Reduce height and spread of crown by approx 3m from branch tips back to suitable growth points. Reduce lateral spread adjacent building by 4m to suitable growth points. Remove deadwood. Remove epicormic growth from main stem to crown break.

  Submitted 7 Jan 2026 Trees

1. 9 Feb 2026

   Received by Islington

2. 12 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 20 Apr 2026

   Decision issued: Approve with no conditions

4. 25 Jul 2026

   Added to PlanIndex

Islington granted permission on 20 April 2026, 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.

• Haven House, 280 Holly Park, London, N4 4AQ

  P2026/0344/TRE Submitted 10 Feb 2026 50 yards away

  T1 Oak tree: Reduce lateral spread adjacent to building by 3m to suitable growt

  Granted Trees

• Haven House, 280 Holly Park, London, N4 4AQ

  P2026/0040/TRE Submitted 7 Jan 2026 50 yards away

  99% historically approved · decision due ~6 Mar

  T1 Oak tree: Reduce height and spread of crown by approx 3m from branch tips back to suitable growth points. Reduce lateral spread adjacent building by 4m to suitable growth points. Remove deadwood. Remove epicormic growth from main stem to crown break.

  Awaiting decision Trees 4 docs

• 55 Crouch Hill, London, N4 4AJ

  P2023/0423/COLP Submitted 8 Feb 2023 100 yards away

  Erection of hip to gable and rear dormer roof extensions, installation of front rooflights. Erection of single storey shed outbuilding and single storey side extension.

  Granted Lawful development Extension Loft or dormer 10 docs
  Small domestic

• 55 Crouch Hill , London, N4 4AJ

  P2023/0438/PRA Submitted 9 Feb 2023 100 yards away

  Notification of Prior Approval (Householder) for the erection of single storey rear extension (6m in depth, maximum height of 3m and eaves height of 3m)

  Granted Prior approval Extension 6 docs
  Small domestic

• Flat 3, 21 Crouch Hill, London, N4 4AB

  P2021/2049/FUL Submitted 13 Jul 2021 150 yards away

  Conversion of the existing roofspace to habitable use with associated extension to width of ridge line; erection of rear dormer with associated Juliet balcony; 1 no. new replacement front facing rooflight, 2 no. side facing rooflights and 1 no. rear facing rooflight.

  Granted Full applications Extension Loft or dormer 17 docs

• Flat 3, 21 Crouch Hill, London, N4 4AB

  P2023/0572/FUL Submitted 27 Feb 2023 150 yards away

  Conversion of the existing roofspace to habitable use with associated extension to width of ridge line; erection of side and rear dormers with associated rear integral balcony; 1 no. new replacement front facing rooflight and 1 no. rear facing rooflight

  Refused Householder Extension Loft or dormer 12 docs
  Domestic

• 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