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 53 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 63 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 50 yards away

  94% 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

  P2026/1692/LBC Submitted 26 Jun 2026 50 yards away

  94% historically approved · decision due ~21 Aug

  To consolidate the third floor front bedroom as a single room (with potential to reinstate the dividing partition in the future), and to update the consented drawings to reflect the 3rd floor ceiling in the front bedroom and bathroom as installed and approved in 2014.

  Awaiting decision Heritage and listed buildings 7 docs

• 8 Canonbury Square, London, N1 2AU

  P2023/0410/LBC Submitted 8 Feb 2023 50 yards away

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

  Granted Heritage and listed buildings 9 docs

• 14 Canonbury Square, London, N1 2AL

  P2023/0982/LBC Submitted 31 Mar 2023 50 yards away

  Refurbishment of 8 painted timber sash windows at 1st floor level on the front and rear elevations, including replacement of existing single glazed panes with new single glazed panes of laminated acoustic specification.

  Granted Heritage and listed buildings Windows or glazing 1 doc

• 14 Canonbury Square, London, N1 2AL

  P2023/0924/FUL Submitted 31 Mar 2023 50 yards away

  Refurbishment of 8 painted timber sash windows at 1st floor level on the front and rear elevations, including replacement of existing single glazed panes with new single glazed panes of laminated acoustic specification.

  Granted Full applications Windows or glazing 13 docs

• 13-18 & 21-22 Canonbury Square, London, N1 2AL

  P2023/0631/LBC Submitted 1 Mar 2023 50 yards away

  External restoration work to 13-16, 17-18 & 21-22 Canonbury Square: Reinstate front entrance steps with natural stone and traditional/original materials; repair railings and reform/repair the stone plinth in which the railings are set as required; renew the weather resistant surface to the first floor balconies and restore the existing railings (repairing unsound railings, replace missing sections, stripping existing paint coatings, repairing rust damage and decorating) and reset and consolidate the existing slab balcony as required [Full planning application ref: P2023/0603/FUL also submitted]

  Granted Heritage and listed buildings 2 docs

• P2026/2615/FUL Awaiting decision

  23 Framfield Road, London, N5 1UU

  Erection of outrigger dormer extension and all associated works.

  Received 2 Oct, published by the council 11 Oct 2026 Householder
• P2026/2593/FUL Awaiting decision

  1 Wyatt Road, London, N5 2JU

  Erection of mansard roof extension.

  Received 1 Oct, published by the council 2 Oct 2026 Householder
• P2026/2124/FUL Granted

  13 Willow Bridge Road, London, N1 2LB

  Installation of mechanical plant comprising air source heat pumps and an air han

  Received 7 Aug, published by the council 19 Aug 2026 Householder
• P2026/0821/FUL Granted

  32 Harberton Road, London, N19 3JR

  Retention of 1x bike store and 1x bin store within front garden

  Received 26 Mar, published by the council 25 Jul 2026 Householder
• P2026/2571/FUL Awaiting decision

  3 Sotheby Road, London, N5 2UP

  Proposed replacement front boundary wall with railings, front garden alterations to enlarge lightwell, cycle and refuse storage and refurbished stone front steps.

  Received 29 Sep, published by the council 11 Oct 2026 Householder