HGY/2026/0951

1. 1 Apr 2026

   Received by Haringey

2. 27 May 2026

   Decision issued: Approve

3. 24 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

• HGY/2026/1543 Granted

  4 The Court, Cascade Avenue, Hornsey, London, N10 3PS

  T1: Lime (14m): Repollard to previous points removing 2-3m of growth as part of regular maintenance

  2 Jun 2026 0m away Trees
• HGY/2026/1160 Granted

  The Court, Cascade Avenue, Hornsey, London, N10 3PS

  Works to tree protected as part of a Group TPO. Ash - Inonotus hispidus (Fungus) located on main stem(s) of tree. Crown reduce the height by 4.5m Crown reduce the spread to balance and shape by reducing branch lengths of up to 3.5m Remove dead wood

  23 Apr 2026 0m away Trees
• HGY/2026/2004 Awaiting decision

  31 Cascade Avenue, Hornsey, London, N10 3PT

  Replacement of all existing windows with double-glazed timber casement windows; Replacement of existing front entrance door with timber hardwood door; Enlargement of existing rear exit openings for the installation of double-glazed timber doors to the rear elevation.

  22 Jul 2026 71m away Householder
• HGY/2021/1635 Granted

  5, Rookfield Close, London, N10 3TR

  Rear roof dormer

  26 May 2021 92m away Full applications
• HGY/2022/4104 Granted

  24, Cascade Avenue, Hornsey, London, N10 3PU

  Replace soft wood timber windows on 2nd floor loft (rear and side) with like-for-like replacement hard wood timber windows.

  14 Nov 2022 115m away Householder
• HGY/2026/0363 Granted

  30 Cascade Avenue, Hornsey, London, N10 3PU

  Approval of details pursuant to condition 4 (window details) attached to planning permission ref. HGY/2024/2058 approved on 12/11/2024 for roof refurbishment and loft conversion with introduction of rear dormer; one front and one rear rooflight; alterations to door and window on rear elevation; alterations to existing garden terrace; renewal of casement windows with double glazed timber windows.

  11 Feb 2026 115m away Conditions

• HGY/2026/2104 Granted

  17 Sperling Road, Tottenham, London, N17 6UQ

  Certificate of lawfulness for proposed use: Loft conversion with erection of rear L-shaped dormer and insertion of 2no. front rooflights.

  23 Jul 2026 Lawful development
• HGY/2026/1307 Granted

  49 Lordsmead Road, Tottenham, London, N17 6EX

  Certificate of lawfulness for the existing use of the property as five separate self-contained flats.

  8 May 2026 Lawful development
• HGY/2026/1885 Granted

  6, Grainger Road, London, N22 5LT

  Certificate of Lawfulness: Proposed alterations to the roof comprising the installation of 3no. rooflights (2no. front facing and 1no. rear facing).

  6 Jul 2026 Lawful development
• HGY/2026/1375 Granted

  Flats 1, 2, & 3 149 Crescent Road, Wood Green, London, N22 7RU

  Certificate of lawfulness for the existing use of the property as 3 self-contained flats (comprising of ground floor 2 bed, first floor 2 bed, second floor 1 bed) for more than 4 years.

  14 May 2026 Lawful development
• HGY/2026/1409 Granted

  492 Archway Road, Hornsey, London, N6 4NA

  Certificate of Lawfulness Existing Use. Use of lower ground floor as two flats (Use Class C3).

  19 May 2026 Lawful development