26 Onslow Gardens, Hornsey, London, N10 3JU

This site has had 2 applications since 2026: 1 approved, 0 refused.

• HGY/2026/1669 Awaiting decision

  26 Onslow Gardens, Hornsey, London, N10 3JU

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

  Submitted 24 Jun 2026 Householder

1. 16 Jun 2026

   Received by Haringey

2. 24 Jul 2026

   Added to PlanIndex

3. 11 Aug 2026

   Decision issued: Approve

Haringey granted permission on 11 August 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.

• 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

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

  HGY/2026/0940 Submitted 1 Apr 2026 0m away

  Certificate of lawfulness for the proposed erection of a rear dormer.

  Granted Lawful development Loft or dormer 5 docs

• 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