HGY/2025/3411

1. 15 Dec 2025

   Received by Haringey

2. 8 Jan 2026

   Decision issued: Approve

3. 24 Jul 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

• HGY/2025/3466 Granted

  Surgery, 636A Green Lanes, Hornsey, London, N8 0SD

  Application to determine if prior approval is required for the proposed change of use from a dental surgery (Commercial, Business and Service (Use Class E)) to a single dwellinghouse (Use Class C3). Application made under Schedule 2, Part 3, Class MA of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended).

  12 Dec 2025 75m away Prior approval
• HGY/2026/0081 Granted

  Office D, 638 Green Lanes, Hornsey, London, N8 0SD

  Change of use from office to residential

  12 Jan 2026 75m away Full applications
• HGY/2026/1473 Granted

  Office D, 638 Green Lanes, Hornsey, London, N8 0SD

  Approval of details pursuant to condition 4 (Details of Refuse Storage) attached to planning permission ref. HGY/2026/0081

  26 May 2026 75m away Conditions
• HGY/2025/0368 Withdrawn

  638 Green Lanes, Hornsey, London, N8 0SD

  Creation of 1 bedroom dwelling including first floor extension

  14 Feb 2025 75m away Full applications
• HGY/2026/1854 Awaiting decision

  Ventilation Shaft Compound , Colina Road , London, N8 0RA

  Certificate of Lawfulness (proposed) for construction of single-storey transformer building within existing operational railway compound, installation of electrical plant, associated hardstanding, sustainable drainage features, new foul sewer connection, and ancillary works including security fencing & enclosures and provision for maintenance access.

  1 Jul 2026 101m away Lawful development
• HGY/2026/1985 Awaiting decision

  130 Effingham Road, Hornsey, London, N8 0AD

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

  14 Jul 2026 109m away Householder

• HGY/2026/2104 Granted

  17 Sperling Road, Tottenham, London, N17 6UQ

  Certificate of lawfulness for proposed use: Loft conversion with erection of rear L-shaped dormer and insertion of 2no. front rooflights.

  23 Jul 2026 Lawful development
• HGY/2026/1307 Granted

  49 Lordsmead Road, Tottenham, London, N17 6EX

  Certificate of lawfulness for the existing use of the property as five separate self-contained flats.

  8 May 2026 Lawful development
• HGY/2026/1885 Granted

  6, Grainger Road, London, N22 5LT

  Certificate of Lawfulness: Proposed alterations to the roof comprising the installation of 3no. rooflights (2no. front facing and 1no. rear facing).

  6 Jul 2026 Lawful development
• HGY/2026/1375 Granted

  Flats 1, 2, & 3 149 Crescent Road, Wood Green, London, N22 7RU

  Certificate of lawfulness for the existing use of the property as 3 self-contained flats (comprising of ground floor 2 bed, first floor 2 bed, second floor 1 bed) for more than 4 years.

  14 May 2026 Lawful development
• HGY/2026/1409 Granted

  492 Archway Road, Hornsey, London, N6 4NA

  Certificate of Lawfulness Existing Use. Use of lower ground floor as two flats (Use Class C3).

  19 May 2026 Lawful development