341 Green Lanes, Hornsey, London, N4 1DZ

1. 20 Oct 2025

   Received by Haringey

2. 27 Oct 2025

   Decision issued: Approve

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.

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

• 339 Green Lanes, Hornsey, London, N4 1DZ

  HGY/2025/3058 Submitted 21 Nov 2025 0m away

  Erection of a commercial kitchen extractor system and associated flue.

  Granted Full applications 17 docs

• 42 Lothair Road North, Hornsey, London, N4 1EW

  HGY/2024/2767 Submitted 8 Oct 2024 52m away

  Certificate of lawfulness-proposed use for the construction of a rear dormer to the main roof and outrigger roof and insertion of 2 no. rooflights with Juliet balcony.

  Granted Lawful development Extension Loft or dormer 15 docs

• 42 Lothair Road North, Hornsey, London, N4 1EW

  HGY/2024/2675 Submitted 30 Sep 2024 52m away

  Erection of single storey extension which extends beyond the rear wall of the original house by 5.5m, for which the maximum height would be 3m and for which the height of the eaves would be 2.8m

  Decided Prior approval Extension 15 docs
  Small domestic

• 44, Lothair Road North, London, N4 1EW

  HGY/2021/1809 Submitted 18 Jun 2021 52m away

  Erection of single-storey infill rear extension

  Granted Full applications Extension 8 docs
  Small domestic

• B&Q, Arena Shopping Park, Green Lanes, London N4 1DT

  HGY/2025/2585 Submitted 24 Sep 2025 74m away

  Display 4x internally illuminated box signs, 1x set of flat cut letters, 10x panels and 2x new panels on illuminated totem.

  Granted Advertising 5 docs

• Bus Shelter , Pavement Outside Arena Shopping Park, Finsbury Park, London, N4 1DT

  HGY/2026/1609 Submitted 29 Jun 2026 74m away

  Consent to display an LCD Bus Shelter Advertisement.

  Granted Advertising 10 docs

• 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