25 Cornwall Avenue, Wood Green, London, N22 7DA

1. 10 Sep 2025

   Received by Haringey

2. 10 Oct 2025

   Decision issued: Approve

3. 10 Aug 2026

   Added to PlanIndex

Haringey granted permission on 10 October 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.

An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.

• 17 Cornwall Avenue, Wood Green, London, N22 7DA

  HGY/2023/0415 Submitted 10 Feb 2023 50 yards away

  Certificate of Lawfulness for proposed single storey rear extension

  Granted Lawful development Extension 8 docs
  Small domestic

• 13 Cornwall Avenue, Wood Green, London, N22 7DA

  HGY/2022/4516 Submitted 22 Dec 2022 50 yards away

  Certificate of lawfulness for the existing use of the property as two separate self-contained flats comprising a 1-bedroom ground-floor flat with access to the rear garden and a 1-bedroom first-floor flat.

  Granted Lawful development New dwelling 6 docs

• 17 Cornwall Avenue, Wood Green, London, N22 7DA

  HGY/2023/0567 Submitted 24 Feb 2023 50 yards away

  Erection of single storey extension which extends beyond the rear wall of the original house by 3.66m, for which the maximum height would be 3.2m and for which the height of the eaves would be 2.99m

  Decided Prior approval Extension 8 docs
  Small domestic

• 15, Cornwall Avenue, London, N22 7DA

  HGY/2021/1763 Submitted 21 Jun 2021 50 yards away

  Erection of a single storey extension which extends beyond the rear wall of the original house by 5.15m, for which the maximum height would be 3m and for which the height of the eaves would be 2.9m

  Decided Prior approval Extension 7 docs
  Small domestic

• 25, Cornwall Avenue, London, N22 7DA

  HGY/2021/2811 Submitted 9 Aug 2021 50 yards away

  Certificate of lawfulness: proposed use. Loft conversion with main dormer, floor plan redesign and all associated works.

  Granted Lawful development Loft or dormer 8 docs

• 24 Northcott Avenue, Wood Green, London, N22 7DB

  HGY/2023/0110 Submitted 12 Jan 2023 50 yards away

  Certificate of lawfulness for formation of dormer in rear roof slope with Juliet balcony and installation of two roof lights in front roof slope.

  Granted Lawful development Loft or dormer 16 docs

• HGY/2026/1571 Granted

  2 Addington Road, Hornsey, London, N4 4RP

  Variation of condition (2) of planning premission ref: HGY/2026/0255 (approved plans); namely (i) addition of a second zinc-clad dormer at the rear corner, matching the approved dormer and resolving an existing non-original, failing flat-roofed junction; (ii) a small high-level clerestory window to the rear elevation at ground floor; and (iii) the repositioning of one of the two approved Velux-type rooflights from the rear roofslope to the east roofslope

  Received 5 Aug, published by the council 10 Aug 2026 Amendments
• HGY/2026/2143 Granted

  98 High Street, Hornsey, London, N8 7NT

  Variation to description and condition 2 (approved plans) to reflect the changes to façade and the addition of a top floor flat. The description shall read: "Construction of a 2-bedroom mews dwelling (Use Class C3); reconfiguration of 2 existing flats (UseClass C3); conversion of loft into a self-contained flat (Use Class C3); and upgrades to the façade." to ref: HGY/2024/2879

  Received 5 Aug, published by the council 10 Aug 2026 Amendments
• HGY/2026/2702 Awaiting decision

  Public House, 492 West Green Road, Tottenham, London, N15 3DA

  Non-material amendment to planning permission HGY/2024/1971 to increase the approved roof height by approximately 0.20m, and increase chimney heights by approximately 0.23m.

  Received 2 Oct, published by the council 11 Oct 2026 Amendments
• HGY/2026/2053 Granted

  Unit 1, 25-27 Clarendon Road Off Hornsey Park Road, Wood Green, London, N8 0DD

  Non-Material amendment to planning permission (HGY/2024/2279) to amend condition 2 (Approved plans), condition 16 (cycle parking) and conditions 25 (Accessible studio provision)

  Received 20 Jul, published by the council 22 Aug 2026 Amendments
• HGY/2026/2458 Granted

  143 Wightman Road, Hornsey, London, N8 0BB

  Non-Material Amendment to planning permission ref. HGY/2025/3436 granted on 3/2/26 for the installation of a roof terrace to the first floor flat rear roof terrace; namely glazed privacy screen to be replaced with slatted, timber screen

  Received 1 Oct, published by the council 4 Oct 2026 Amendments