8 Cornwallis Square, London, N19 4LY

This site has had 3 applications since 2025: 2 approved, 0 refused.

• P2026/0215/FUL Granted

  8 Cornwallis Square, London, N19 4LY

  Erection of ground floor single storey rear extension, loft conversion and dorme

  Decided 24 Mar 2026 Householder
• P2025/3436/COL Withdrawn

  8 Cornwallis Square, London, N19 4LY

  Front roof slope insertion of rooflight not to exceed 150mm high; rear roof slope creation of flat dormer roof not to exceed 40m3, set back from eaves by minimum 200mm, and not to exceed existing ridge height; ground floor rear extension not to exceed 3m length, flat roof/eaves not to exceed 3m high.

  Submitted 8 Dec 2025 Lawful development

1. 27 May 2026

   Received by Islington

2. 10 Jun 2026

   Validated

   Checked as complete and ready for consideration.

3. 21 Jul 2026

   Decision issued: Approve with conditions

4. 25 Jul 2026

   Added to PlanIndex

Islington granted permission on 21 July 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.

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.

• 8 Cornwallis Square, London, N19 4LY

  P2026/0215/FUL Submitted 28 Jan 2026 50 yards away

  Erection of ground floor single storey rear extension, loft conversion and dorme

  Granted Householder Extension Loft or dormer
  Small domestic

• 8 Cornwallis Square, London, N19 4LY

  P2025/3436/COL Submitted 8 Dec 2025 50 yards away

  Front roof slope insertion of rooflight not to exceed 150mm high; rear roof slope creation of flat dormer roof not to exceed 40m3, set back from eaves by minimum 200mm, and not to exceed existing ridge height; ground floor rear extension not to exceed 3m length, flat roof/eaves not to exceed 3m high.

  Withdrawn Lawful development Extension Loft or dormer +1 7 docs

• 68, Kiver Road, London, N19 4PD

  P2026/1747/FUL Submitted 1 Jul 2026 50 yards away

  Erection of a mansard roof extension with raised party wall

  Granted Householder Extension Loft or dormer
  Domestic

• 89 Marlborough Road, London, N19 4PA

  P2026/0288/COL Submitted 4 Feb 2026 100 yards away

  Certificate of lawfulness (proposed) for addition of a second storey to existing

  Withdrawn Lawful development

• 89 Marlborough Road, London, N19 4PA

  P2025/3173/FUL Submitted 18 Nov 2025 100 yards away

  Erection of single storey rear extension

  Granted Householder Extension
  Small domestic

• Ground Floor Flat, 101 Marlborough Road, London, N19 4PA

  P2026/1214/FUL Submitted 22 May 2026 100 yards away

  Single storey side extension to ground floor flat and replacement front bay sash

  Granted Full applications Extension Windows or glazing
  Small domestic

• 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