35 Rathcoole Avenue, Hornsey, London, N8 9LY

1. 31 Jul 2026

   Received by Haringey

2. 28 Aug 2026

   Decision issued: Permitted Development

3. 31 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.

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

• 19 Rathcoole Avenue, Hornsey, London, N8 9LY

  HGY/2026/2032 Submitted 17 Jul 2026 0m away

  91% historically approved · decision due ~11 Sep

  Replacement of existing timber windows with new double-glazed uPVC windows to front, side and rear elevations and replacement of existing timber rear doors to flats with new uPVC doors.

  Awaiting decision Householder New dwelling Windows or glazing 10 docs
  Domestic

• 35 Rathcoole Avenue, Hornsey, London, N8 9LY

  HGY/2026/1784 Submitted 24 Jun 2026 0m away

  91% historically approved · decision due ~19 Aug

  Replacement of the existing single storey rear extension and replacement of the rear first floor double doors with windows.

  Awaiting decision Householder Extension Windows or glazing 3 docs
  Small domestic

• 45 Rathcoole Avenue, Hornsey, London, N8 9LY

  HGY/2026/2033 Submitted 20 Aug 2026 0m away

  91% historically approved · decision due ~15 Oct

  Replacement of existing windows with new double-glazed uPVC windows to front, side and rear elevations, and replacement of existing timber rear doors to flats with new uPVC doors.

  Awaiting decision Householder New dwelling Windows or glazing 17 docs
  Domestic

• Flat A, 1 Rathcoole Avenue, Hornsey, London, N8 9LY

  HGY/2024/1229 Submitted 9 May 2024 0m away

  Approval of condition 1 (Materials) ref: HGY/2023/1449

  Withdrawn Conditions 4 docs

• 56b Rathcoole Avenue, Hornsey, London, N8 9NA

  HGY/2026/0481 Submitted 13 Apr 2026 34m away

  Non-material amendment following a grant of planning permission HGY/2025/3420 to amend the site address on the planning consent from Flat 56a to Flat 56b Rathcoole Avenue N8 9NA.

  Granted Amendments 7 docs

• First Floor Flat A, 56 Rathcoole Avenue, Hornsey, London, N8 9NA

  HGY/2025/3420 Submitted 8 Dec 2025 34m away

  Installation of 2no. front rooflights.

  Granted Householder Loft or dormer 14 docs
  Domestic

• HGY/2026/1951 Granted

  105 Alexandra Road, Wood Green, London, N8 0LG

  Certificate of Lawfulness (existing) for continued use of property as two flats (C3)

  10 Jul 2026 Lawful development
• HGY/2026/2416 Awaiting decision

  Vincent House, 1A Vincent Road, Tottenham, London, N15 3QA

  Certificate of Lawfulness: Existing use of the property as six self-contained flats.

  4 Sep 2026 Lawful development
• HGY/2026/2154 Awaiting decision

  86 Palmerston Road, Wood Green, London, N22 8RF

  Certificate of Lawfulness Existing: Property was converted from a single dwelling house into 3no. self-contained flats in May 2010.

  2 Sep 2026 Lawful development
• HGY/2026/2107 Awaiting decision

  83 Lancaster Road, Hornsey, London, N4 4PL

  Certificate of lawfulness (proposed): rear roof terrace.

  2 Sep 2026 Lawful development
• HGY/2026/2354 Awaiting decision

  118 Philip Lane, Tottenham, London, N15 4JL

  Lawful development: Existing use of first and loft floor levels of No. 118 Philip Lane as two self-contained C3 residential units.

  1 Sep 2026 Lawful development