83 Lancaster Road, Hornsey, London, N4 4PL

1. 2 Sep 2026

   Received by Haringey

2. 7 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 28 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Haringey took a median of 53 days over the applications it decided in the last year.

This application is with Haringey for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

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

• 85 Lancaster Road, Hornsey, London, N4 4PL

  HGY/2024/2319 Submitted 21 Aug 2024 0m away

  The proposal replaces the existing timber sash windows with modern double glazed timber units on a like-for-like basis.

  Refused Full applications Windows or glazing 15 docs

• 79 Lancaster Road, Hornsey, London, N4 4PL

  HGY/2024/2326 Submitted 21 Aug 2024 0m away

  Section 73 application to vary condition 2 and remove of condition 4 attached to planning permission HGY/2018/0345 to provide a outdoor roof terrace.

  Granted Amendments 20 docs

• 91 Lancaster Road, Hornsey, London, N4 4PL

  HGY/2026/1657 Submitted 11 Jun 2026 0m away

  T1: Holm Oak (6m): Fell to ground level as hampered by surrounding vegetation

  Granted Trees 3 docs

• 64 Lancaster Road, Hornsey, London, N4 4PT

  HGY/2025/3352 Submitted 29 Dec 2025 43m away

  The proposal replaces the existing timber windows with double glazed timber units (revised).

  Granted Full applications Windows or glazing 14 docs

• 28 Lancaster Road, Hornsey, London, N4 4PR

  HGY/2023/0043 Submitted 6 Jan 2023 77m away

  Erection of a single storey rear/infill extension.

  Granted Householder Extension 8 docs
  Small domestic

• Flat A, 95 Florence Road, Hornsey, London, N4 4DL

  HGY/2026/1405 Submitted 18 May 2026 98m away

  Conifer (T1) & (T2) - remove from the top 1-2 metres due to it being too large and stopping the roots to continuing damaging the house.

  Granted Trees 5 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/2026/2354 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
• HGY/2026/1233 Granted

  8 Twyford Avenue, Hornsey, London, N2 9NJ

  Certificate of lawfulness for the erection of a rear dormer and a side dormer including the insertion of 1x front rooflight and 1x rooflight over the side dormer - proposed use

  5 May 2026 Lawful development