24 Onslow Gardens, Hornsey, London, N10 3JU

This site has had 3 applications since 2026: 3 approved, 0 refused.

• HGY/2026/1679 Granted

  24 Onslow Gardens, Hornsey, London, N10 3JU

  Erection of a single storey rear and side extension and installation of rear rooflights to infill extension. (AMENDED DESCRIPTION)

  Decided 28 Aug 2026 Householder
• HGY/2026/1408 Granted

  24 Onslow Gardens, Hornsey, London, N10 3JU

  Enlargement of existing rear dormer and installation of a front dormer window.

  Decided 14 Jul 2026 Householder

1. 1 Apr 2026

   Received by Haringey

2. 2 Apr 2026

   Decision issued: Permitted Development

3. 24 Jul 2026

   Added to PlanIndex

Haringey granted permission on 2 April 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.

• 26 Onslow Gardens, Hornsey, London, N10 3JU

  HGY/2026/1715 Submitted 16 Jun 2026 0m away

  Certificate of Lawfulness for the proposed erection of a dormer extension to the rear and the installation of two rooflights on the front roof slope.

  Granted Lawful development Extension Loft or dormer 18 docs

• 24 Onslow Gardens, Hornsey, London, N10 3JU

  HGY/2026/1408 Submitted 19 May 2026 0m away

  Enlargement of existing rear dormer and installation of a front dormer window.

  Granted Householder Loft or dormer Windows or glazing 10 docs
  Domestic

• 24 Onslow Gardens, Hornsey, London, N10 3JU

  HGY/2026/1679 Submitted 15 Jun 2026 0m away

  Erection of a single storey rear and side extension and installation of rear rooflights to infill extension. (AMENDED DESCRIPTION)

  Granted Householder Extension Loft or dormer 7 docs
  Small domestic

• 26 Onslow Gardens, Hornsey, London, N10 3JU

  HGY/2026/1669 Submitted 24 Jun 2026 0m away

  91% historically approved · decision due ~19 Aug

  Erection of a wrap around ground floor rear extension and extension of first floor rear outrigger; erection of two front roof lights.

  Awaiting decision Householder Extension Loft or dormer 14 docs
  Domestic

• 20, Onslow Gardens, London, N10 3JU

  HGY/2021/2396 Submitted 16 Aug 2021 11m away

  Non-material amendment following a grant of planning permission HGY/2021/1113 involving the retention of existing wall to allow for a bin store area

  Granted Amendments 4 docs

• 13 Onslow Gardens, Hornsey, London, N10 3JT

  HGY/2023/0540 Submitted 22 Feb 2023 41m away

  Construction of an outbuilding

  Granted Householder 9 docs
  Small domestic

• 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.

  20 Jul 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).

  18 May 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.

  7 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)

  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