9 Duckett Road, Hornsey, London, N4 1BJ

1. 9 Jan 2023

   Received by Haringey

2. 6 Mar 2023

   Decision issued: Permitted Development

3. 25 Jul 2026

   Added to PlanIndex

Haringey granted permission on 6 March 2023, 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.

• Ground Floor Flat B, 45 Duckett Road, Hornsey, London, N4 1BJ

  HGY/2024/2395 Submitted 30 Aug 2024 50 yards away

  Certificate of lawfulness for the existing use as dwellinghouse within Use Class C3(C)

  Refused Lawful development 6 docs
  Domestic

• 10 Duckett Road, Hornsey, London, N4 1BN

  HGY/2024/2482 Submitted 9 Sep 2024 50 yards away

  Replacement of existing timber windows and rear door with uPVC units

  Granted Full applications Windows or glazing 12 docs

• 20 Duckett Road, Hornsey, London, N4 1BN

  HGY/2025/3360 Submitted 3 Dec 2025 50 yards away

  Replacement of existing timber windows with modern double glazed uPVC units.

  Granted Full applications Windows or glazing 11 docs

• 21 Mattison Road, Hornsey, London, N4 1BG

  HGY/2026/2579 Submitted 15 Sep 2026 50 yards away

  90% historically approved · decision due ~10 Nov

  Erection of a single-storey partial side extension including the creation of a lightwell and refurbishment of the ground-floor rear elevation; construction of a rear dormer including the installation of 3x front/1x rear rooflights and construction of a second-floor outrigger roof extension, including associated roof terrace.

  Awaiting decision Householder Extension Loft or dormer 17 docs
  Small domestic

• Flat B, 33 Mattison Road, Hornsey, London, N4 1BG

  HGY/2026/0414 Submitted 16 Feb 2026 50 yards away

  Formation of rear dormer and outrigger roof extension with two rooflights to front elevation

  Granted Full applications Extension Loft or dormer 18 docs

• 9 Cavendish Road, Hornsey, London, N4 1RP

  HGY/2026/0521 Submitted 26 Mar 2026 100 yards away

  Erection of a single storey rear extension.

  Granted Householder Extension 7 docs
  Small domestic

• HGY/2026/2285 Granted

  13 Woollaston Road, Hornsey, London, N4 1SD

  Certificate of Lawfulness (proposed) for loft conversion with rear dormer extension.

  Received 14 Aug, published by the council 22 Aug 2026 Lawful development
• HGY/2026/2357 Granted

  40 Falmer Road, Tottenham, London, N15 5BA

  Lawful development Certification for proposed erection of rear roof extension and insertion of front rooflight

  Received 21 Aug, published by the council 4 Oct 2026 Lawful development
• HGY/2026/2692 Granted

  125 High Cross Road, Tottenham, London, N17 9NR

  Lawful development: Proposed use for change of use within Class E to a Nail shop (Class E(c)(iii))

  Received 29 Sep, published by the council 4 Oct 2026 Lawful development
• HGY/2026/2637 Granted

  30 Gloucester Road, Tottenham, London, N17 6DH

  Lawful development: Proposed use. Loft conversion including 2x roof lights and L-shaped box dormer to the rear roof slopes with materials to match existing materials on main roof

  Received 21 Sep, published by the council 4 Oct 2026 Lawful development
• HGY/2026/2420 Granted

  50 St Loys Road, Tottenham, London, N17 6UD

  Certificate of Lawfulness: Proposed erection of an L-shaped rear dormer including the insertion of 2nos. front rooflights.

  Received 28 Aug, published by the council 7 Sep 2026 Lawful development