17 Cascade Avenue, Hornsey, London, N10 3PT

1. 4 Nov 2025

   Received by Haringey

2. 20 Nov 2025

   Decision issued: No Objection

3. 10 Aug 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.

Tree applications cover work to protected trees: those under a tree preservation order need consent for pruning or felling, and trees in a conservation area need six weeks written notice before work starts. The council assesses the amenity value of the tree and can refuse consent, approve it with conditions, or in conservation areas make a preservation order in response.

More on trees applications in our guide

• 31 Cascade Avenue, Hornsey, London, N10 3PT

  HGY/2026/2004 Submitted 22 Jul 2026 0m away

  91% historically approved · decision due ~16 Sep

  Replacement of all existing windows with double-glazed timber casement windows; Replacement of existing front entrance door with timber hardwood door; Replacement of rear glazed doors with double-glazed timber doors (amended).

  Awaiting decision Householder Windows or glazing 7 docs
  Domestic

• 29, Cascade Avenue, London, N10 3PT

  HGY/2019/2899 Submitted 6 Nov 2019 37m away

  Replacement timber windows and doors

  Granted Full applications Windows or glazing 6 docs

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

  HGY/2022/4104 Submitted 14 Nov 2022 48m away

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

  Granted Householder Windows or glazing 5 docs
  Domestic

• 30 Cascade Avenue, Hornsey, London, N10 3PU

  HGY/2026/0363 Submitted 11 Feb 2026 48m away

  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.

  Granted Conditions Loft or dormer Windows or glazing 8 docs

• 30 Cascade Avenue, Hornsey, London, N10 3PU

  HGY/2024/2058 Submitted 24 Jul 2024 48m away

  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.

  Granted Householder Loft or dormer Windows or glazing 9 docs
  Domestic

• 6 Cascade Avenue, Hornsey, London, N10 3PU

  HGY/2025/1677 Submitted 2 Sep 2026 48m away

  91% historically approved · decision due ~28 Oct

  Installation of replacement rear steps connecting the kitchen to the garden

  Awaiting decision Householder 8 docs
  Domestic

• HGY/2026/2472 Awaiting decision

  33 Mount Pleasant Crescent, Hornsey, London, N4 4HP

  T1 - Ash - Crown reduction by 3m in height bringing lateral growth to shape by 1.5m. Removal of all major dead wood, leaving the tree a standing height of 9m. Reducing the crown by approximately 3 meters in height and 1.5 meters laterally will help reduce overall crown weight and wind loading, while maintaining a balanced and proportionate crown.

  4 Sep 2026 Trees
• HGY/2026/2484 Awaiting decision

  18 Wood Lane, Hornsey, London, N6 5UB

  T1 Silver Birch - heavy lean with crack through trunk - remove to ground level.

  4 Sep 2026 Trees
• HGY/2026/2475 Awaiting decision

  11 Firs Avenue, Hornsey, London, N10 3LY

  T1 - sweet gum tree (6m) - take down to ground level. T2 - acer tree (4m) - reduce lowest limb overhanging patio by approximately 2m to suitable pruning points close to edge of patio. T3 - thorny olive tree (4m) - take down to ground level. T4 - laurel tree (3m) - reduce height to approximately fence height (1.8m) and reduce branches back from bed by approximately 1m. T5 - climbing hydrangea (3m) - reduce height to approximately fence height (1.8m). T6 - ivy on right fence (3m) - remove as much as possible around hydrangea. T7 - ivy on rear fence (3m) - remove as much as possible from top of fence to allow plants beneath space. T8 - winter jasmine & euonymus bushes (2m) - cut back from path. Front garden- T9 - variegated laurel tree (3m) - reduce height to approximately 2.2m and reduce back from driveway. T10 - variegated euonymus hedge (1m) - cut back to wall from pavement and remove branch from rear plant growing wall, leaving acer above.

  4 Sep 2026 Trees
• HGY/2026/2474 Awaiting decision

  12 The Avenue, Hornsey, London, N10 2QL

  Cypress (T1): Fell Apple (T2): Reduce to previous pruning points (approx. 1-2m regrowth)

  4 Sep 2026 Trees
• HGY/2026/2473 Awaiting decision

  92A Stapleton Hall Road, Hornsey, London, N4 4QA

  T1 Oak reduce overall canopy size by 1.5 m and remove rose from canopy. To maintain size T2 Oak reduce overall canopy by 1.5m to maintain size. T3 Lime reduce overall canopy by 2m to maintain size T4 Lime reduce overall canopy by 2m to maintain size

  4 Sep 2026 Trees