12 Canonbury Square, London

This site has had 3 applications since 2026: 1 approved, 0 refused.

• P2026/0206/LBC Awaiting decision

  12 Canonbury Square, London

  Replacement of traditional timber sash windows with like for like double glazed units (P2026/0205/FUL also submitted).

  Submitted 28 Jan 2026 Heritage and listed buildings
• P2026/0012/TRE Granted

  12 Canonbury Square, London

  London Plane T1 (20M high, 850mm dia.) - Raise crown all around to 6 metres abo

  Decided 2 Feb 2026 Trees

1. 28 Jan 2026

   Received by Islington

2. 11 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 25 Jul 2026

   Added to PlanIndex

4. 7 Sep 2026

   Status changed to VALIDATED

5. Decision

   Awaiting decision

   Decision expected by 8 April 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Islington took a median of 52 days over the applications it decided in the last year.

• P2026/0206/LBC Awaiting decision

  12 Canonbury Square, London

  Replacement of traditional timber sash windows with like for like double glazed units (P2026/0205/FUL also submitted).

  Submitted 28 Jan 2026 Heritage and listed buildings

1 later application on the register refers to this one:

• P2026/0206/LBC Awaiting decision

  12 Canonbury Square, London

  Replacement of traditional timber sash windows with like for like double glazed units (P2026/0205/FUL also submitted).

  Submitted 28 Jan 2026 Heritage and listed buildings

This application is with Islington for determination, against a statutory target of eight weeks. Over the last year Islington decided householder applications in a median of 55 days. More in our guide to how long planning decisions take.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 12 Canonbury Square, London

  P2026/0206/LBC Submitted 28 Jan 2026 0m away

  92% historically approved · decision due ~8 Apr

  Replacement of traditional timber sash windows with like for like double glazed units (P2026/0205/FUL also submitted).

  Awaiting decision Heritage and listed buildings Windows or glazing

• 8 Canonbury Square, London, N1 2AU

  P2023/0410/LBC Submitted 8 Feb 2023 22m away

  Dismantling and relaying of rear elevation brickwork from 3rd floor to roof level.

  Granted Heritage and listed buildings 9 docs

• 8, Canonbury Square, London, N1 2AU

  P2026/1692/LBC Submitted 26 Jun 2026 32m away

  92% historically approved · decision due ~14 Sep

  To consolidate the third floor front bedroom as a single room (with potential t

  Status unknown Heritage and listed buildings

• 6 Canonbury Square, London, N1 2AU

  P2026/0778/FUL Submitted 20 Apr 2026 32m away

  Proposed installation of a prefabricated garden shed.

  Granted Householder
  Small domestic

• 6, Canonbury Square, London, N1 2AU

  P2026/1171/LBC Submitted 5 May 2026 32m away

  The proposed works are the installation of a prefabricated garden shed.

  Granted Heritage and listed buildings
  Small domestic

• 21 - 22, Ground Floor And Basement Maisonette, Canonbury Square, London, N1 2AL

  P2026/0763/TRE Submitted 20 Mar 2026 65m away

  100% historically approved · decision due ~18 May

  T1 & T2 – Lime (Tilia sp.) Crown reduction by approximately 20–25% to reduce height and lateral spread, selective crown thinning to improve light penetration, and removal of any dead, diseased or crossing branches. All works to be carried out in accordance with BS3998:2010. The proposed works are required to manage the size and spread of the trees, as the branches have become overextended within the garden setting. The works will help maintain a balanced crown, improve light to the garden, and ensure the trees remain suitable for their residential context. The proposals are minor in nature and will not adversely affect the health, appearance, or amenity value of the trees.

  Awaiting decision Trees 4 docs

• P2026/2364/FUL Awaiting decision

  14C, Highbury Terrace Mews, London, N5 1UT

  Installation of replacement front balcony, front and rear facade/ door alteratio

  16 Sep 2026 Householder
• P2026/2403/FUL Status unknown

  15, Canning Road, London, N5 2JR

  Erection of mansard roof extension.

  11 Sep 2026 Householder
• P2026/2390/FUL Awaiting decision

  67, Leconfield Road, London, N5 2RZ

  Alterations to rear elevation openings and replacment of roof of existing LGF ex

  10 Sep 2026 Householder
• P2026/2307/FUL Awaiting decision

  20, Canonbury Park South, London, N1 2JJ

  Single-storey full-width rear lower ground floor extension, new rear window at g

  10 Sep 2026 Householder
• P2026/2384/FUL Status unknown

  58 Hornsey Lane, London, N6 5LU

  Internal configuration of the existing dwelling, replacement of side and rear el

  9 Sep 2026 Householder