420, St Anns Road, London, N15 3JJ

1. 9 Jul 2021

   Received by Haringey

2. 1 Sep 2021

   Decision issued: Permitted Development

3. 7 Sep 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

• 5 Southdown Villas, St Anns Road, Tottenham, London, N15 3SS

  HGY/2023/0613 Submitted 1 Mar 2023 56m away

  Certificate of Lawfulness for proposed rear dormer extension to facilitate loft conversion with associated rooflights and alterations to the existing rear extension

  Granted Lawful development Extension Loft or dormer 8 docs

• 33 Salisbury Road, Tottenham, London, N4 1JY

  HGY/2025/2413 Submitted 9 Sep 2025 77m away

  Conversion of first and second floors into 2 flats (1 x 2b3p & 1 x 2b4p); changes to fenestration to double glazed uPVC. (amended description)

  Granted Full applications New dwelling Windows or glazing 10 docs
  Several homes

• 438 St Anns Road, Tottenham, London, N15 3JH

  HGY/2023/0220 Submitted 23 Jan 2023 79m away

  Conversion of the existing HMO into two self-contained flats consisting of one 3-bedroom and one 1- bedroom flats.

  Granted Full applications New dwelling 14 docs

• 436 St Anns Road, Tottenham, London, N15 3JH

  HGY/2024/2045 Submitted 14 Aug 2024 79m away

  Erection of a single storey rear and side wraparound extension to facilitate enlargement of existing 6 bedroom HMO to 7 bedroom HMO (Sui Generis).

  Withdrawn Full applications Extension 8 docs
  Small domestic

• 8 Salisbury Road, Tottenham, London, N4 1JZ

  HGY/2025/2586 Submitted 24 Sep 2025 93m away

  Erection of single storey side and rear extension

  Granted Householder Extension 9 docs
  Small domestic

• 4 Salisbury Road, Tottenham, London, N4 1JZ

  HGY/2025/2188 Submitted 11 Aug 2025 93m away

  Lawful development: Existing use for the conversion of the property from dwellinghouse into 7 self contained flats

  Refused Lawful development New dwelling 8 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