90 Duckett Road, Hornsey, London, N4 1BW

1. 7 Jan 2026

   Received by Haringey

2. 4 Mar 2026

   Decision issued: Approve

3. 24 Jul 2026

   Added to PlanIndex

Haringey granted permission on 4 March 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 70 Duckett Road, Hornsey, London, N4 1BW

  HGY/2023/0447 Submitted 16 Mar 2023 50 yards away

  L-shaped loft conversion with a roof terrace above the first floor outrigger, extension of the front roof over the bay window, installation of one roof light to the front slope and two small roof lights to either side of the front roof element.

  Granted Full applications Extension Loft or dormer +1 6 docs

• 70 Duckett Road, Hornsey, London, N4 1BW

  HGY/2023/0510 Submitted 21 Feb 2023 50 yards away

  Replacement of existing rear extension with a wraparound ground floor extension and replacement of rear windows on first floor level with the addition of juliette balconies.

  Refused Full applications Extension Windows or glazing 7 docs

• 79 Cavendish Road, Hornsey, London, N4 1RR

  HGY/2025/2882 Submitted 21 Oct 2025 50 yards away

  Certificate of lawfulness for the erection of a rear dormer and roof extension including the insertion of 3x front and 1x rear rooflights - proposed use

  Granted Lawful development Extension Loft or dormer 11 docs

• 447A Green Lanes, Hornsey, London, N4 1HA

  HGY/2025/3216 Submitted 20 Nov 2025 50 yards away

  Erection of two roof dormers and second floor rear extension to facilitate 2 additional rooms and a new kitchen to existing HMO.

  Refused Full applications Extension Loft or dormer 14 docs

• First Floor Flat, 97 Mattison Road, Hornsey, London, N4 1BQ

  HGY/2025/3143 Submitted 12 Dec 2025 100 yards away

  Loft extension including the erection of a rear dormer, front rooflights and rear roof terrace.

  Granted Full applications Extension Loft or dormer 11 docs

• Harringay Seventh Day Adventist Church, Cavendish Road, Hornsey, London, N4 1RS

  HGY/2025/2571 Submitted 13 Jan 2026 100 yards away

  83% historically approved · decision due ~10 Mar

  Change of Use from F1 (F - Public Worship or Religious Institution) to F2 (Community Use)

  Awaiting decision Full applications 7 docs

• HGY/2026/2042 Granted

  Flat B, 101 Talbot Road, Hornsey, London, N6 4QX

  Certificate of Lawfulness (proposed) for replacement of existing first-floor front elevation windows with new like-for-like timber double-glazed windows.

  Received 20 Jul, published by the council 10 Aug 2026 Lawful development
• HGY/2026/1396 Granted

  15 Pellatt Grove, Wood Green, London, N22 5NP

  Certificate of lawfulness for the existing use of the property as a 6-bedroom House in Multiple Occupation (HMO) for up to six occupants (Class C4 use).

  Received 18 May, published by the council 24 Jul 2026 Lawful development
• HGY/2026/2471 Awaiting decision

  20 Bancroft Avenue, Hornsey, London, N2 0AS

  Lawful development: Proposed use. erection of a new rear-side dormer extension, together with the installation of four front rooflights and two rear rooflights.

  Received 7 Sep, published by the council 17 Sep 2026 Lawful development
• 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)

  Received 10 Jul, published by the council 24 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.

  Received 4 Sep, published by the council 7 Sep 2026 Lawful development