Flat C, 6 Thornhill Crescent, London, N1 1BL

This site has had 4 applications since 2019: 4 approved, 0 refused.

• P2025/2883/LBC Granted

  Flat C, 6 Thornhill Crescent, London, N1 1BL

  Retrospective application for retention replacement of a window within the exist

  Decided 12 Jan 2026 Heritage and listed buildings
• P2019/3342/FUL Granted

  Flat C, 6 Thornhill Crescent, London, N1 1BL

  Replacement of the existing rear dormer window.

  Decided 23 Dec 2019 Full applications
• P2019/3418/LBC Granted

  Flat C, 6 Thornhill Crescent, London, N1 1BL

  Replacement of the existing rear dormer window.

  Decided 23 Dec 2019 Heritage and listed buildings

1. 21 Oct 2025

   Received by Islington

2. 12 Jan 2026

   Decision issued: Approve with conditions

3. 8 Aug 2026

   Added to PlanIndex

Islington granted permission on 12 January 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 full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• Flat C, 6 Thornhill Crescent, London, N1 1BL

  P2025/2883/LBC Submitted 21 Oct 2025 50 yards away

  Retrospective application for retention replacement of a window within the exist

  Granted Heritage and listed buildings Windows or glazing

• 12 Thornhill Crescent, London, N1 1BL

  P2021/2108/LBC Submitted 16 Jul 2021 50 yards away

  Removal of an existing modern infill extension to the rear and replacement with a new glazed extension; replacement of rear window at lower ground floor; relocation of boiler and hotwater storage tank to rear lower ground floor level; installation of York stone paving; replacement of the existing non-original front garden walls with railings to match adjacent; adjustment of grating enclosing lightwell; installation of new cast iron steps and new enclosed storage area; removal of lower ground floor sliding patio doors and replacement with timber French doors; replacement of lower ground floor window with new panelled entrance door; and bin store at lower ground floor level; damp-proofing to front vaults; installation of timber flooring over original floorboards throughout; new panelled doors, architraves; refurbished bathrooms; re-location of kitchen to front upper ground floor and enlargement of opening between front and rear rooms; adjustment of attic space. Also linked to full application P2021/2085.

  Granted Heritage and listed buildings Extension Windows or glazing 2 docs

• 12 Thornhill Crescent, London, N1 1BL

  P2021/2085/FUL Submitted 16 Jul 2021 50 yards away

  Removal of an existing modern infill extension to the rear and replacement with a new glazed extension; replacement of rear window at lower ground floor; relocation of boiler and hotwater storage tank to rear lower ground floor level; installation of York stone paving; replacement of the existing non-original front garden walls with railings to match adjacent; adjustment of grating enclosing lightwell; installation of new cast iron steps and new enclosed storage area; removal of lower ground floor sliding patio doors and replacement with timber french doors; replacement of lower ground floor window with new panelled entrance door; and bin store at lower ground floor level; damp-proofing to front vaults; installation of timber flooring over original floorboards throughout; new panelled doors, architraves; refurbished bathrooms; re-location of kitchen to front upper ground floor and enlargement of opening between front and rear rooms; adjustment of attic space. Also linked to listed building consent ref: P2021/2108/LBC.

  Granted Householder Extension Windows or glazing 7 docs
  Domestic

• 8 Thornhill Crescent, London, N1 1BL

  P2024/3492/TRE Submitted 22 Nov 2024 50 yards away

  99% historically approved · decision due ~24 Jan

  Fig (T1) - Pollard at 3m. The tree has grown far too big for the space and needs to be brought down so it can be managed as a much smaller tree.

  Decided Trees 3 docs

• 8 Thornhill Crescent, London, N1 1BL

  P2021/2319/TRE Submitted 6 Aug 2021 50 yards away

  Rear garden Eucalyptus (T1) - Reduce height down to 2.5m (the 1st growth point).

  Granted Trees 3 docs

• Flat C, 6 Thornhill Crescent, London, N1 1BL

  P2019/3342/FUL Submitted 7 Nov 2019 50 yards away

  Replacement of the existing rear dormer window.

  Granted Full applications Loft or dormer Windows or glazing 9 docs

• P2025/2999/FUL Granted

  85 Charterhouse Street, London, EC1M 6HJ

  Change of Use from existing mixed use (restaurant/nightclub) Sui Generis Use Class to a Class E (Commercial) Use Class across the whole building. Additional works include the creation of a roof level terrace space and the refurbishment of an existing terrace at rear first floor level, new windows to the front and rear elevation, replacement of mechanical plant and machinery at roof level, refurbishment of façade and improvements to the existing entrance.

  Received 22 Oct, published by the council 25 Jul 2026 Full applications
• P2026/1382/FUL Granted

  7, Penn Road, London, N7 9RD

  Replacement of single-glazed windows and doors with double-glazed timber windows

  Received 14 Aug, published by the council 23 Aug 2026 Full applications
• P2026/2568/FUL Awaiting decision

  63, Mowatt Close, London, N19 3XZ

  Replacement of existing windows with double glazed UPVC windows

  5 Oct 2026 Full applications
• P2026/2595/FUL Awaiting decision

  Flat D, 44 Tufnell Park Road, London, N7 0DT

  Erection of a single-storey lower ground floor extension, together with internal alterations to convert the existing self-contained studio flat to a 1-bedroom, 2-person unit

  Received 2 Oct, published by the council 11 Oct 2026 Full applications
• P2026/2514/FUL Status unknown

  4-6 Baltic Street East, London, EC1Y 0UJ

  Replacement timber shopfronts, replacement double-glazed timber casement and sas

  Received 30 Sep, published by the council 1 Oct 2026 Full applications