Basement Level, 5 Lonsdale Square, London, N1 1EN

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

• P2026/0324/LBC Refused

  Basement Level, 5 Lonsdale Square, London, N1 1EN

  Partial opening up of the rear elevation, partial opening of the existing chimney breasts and the opening of an existing wall and associated alterations (Full planning application also submitted ref: P2026/0325/FUL).

  Decided 26 Aug 2026 Heritage and listed buildings

1. 9 Feb 2026

   Received by Islington

2. 24 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 25 Jul 2026

   Added to PlanIndex

4. 26 Aug 2026

   Decision issued: Refusal of permission

• P2026/0324/LBC Refused

  Basement Level, 5 Lonsdale Square, London, N1 1EN

  Partial opening up of the rear elevation, partial opening of the existing chimney breasts and the opening of an existing wall and associated alterations (Full planning application also submitted ref: P2026/0325/FUL).

  Decided 26 Aug 2026 Heritage and listed buildings

1 later application on the register refers to this one:

• P2026/0324/LBC Refused

  Basement Level, 5 Lonsdale Square, London, N1 1EN

  Partial opening up of the rear elevation, partial opening of the existing chimney breasts and the opening of an existing wall and associated alterations (Full planning application also submitted ref: P2026/0325/FUL).

  Decided 26 Aug 2026 Heritage and listed buildings

Islington refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. 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.

• Basement Level, 5 Lonsdale Square, London, N1 1EN

  P2026/0324/LBC Submitted 9 Feb 2026 50 yards away

  Partial opening up of the rear elevation, partial opening of the existing chimney breasts and the opening of an existing wall and associated alterations (Full planning application also submitted ref: P2026/0325/FUL).

  Refused Heritage and listed buildings 8 docs

• 3 Lonsdale Square, London, N1 1EN

  P2025/1876/TRE Submitted 1 Jul 2025 50 yards away

  99% historically approved · decision due ~13 Oct

  T1 - Diseased/ dying birch tree (12m) - take down to ground level This is a five day notice to remove a diseased/dying tree.

  Decided Trees 5 docs

• 3 Lonsdale Square, London, N1 1EN

  P2023/0198/LBC Submitted 19 Jan 2023 50 yards away

  Internal alterations and refurbishment to upgrade bathrooms and kitchens and installation of new floor finishes and fitted joinery.

  Granted Heritage and listed buildings 27 docs

• 9 Lonsdale Square, London

  P2026/2638/TRE Submitted 6 Oct 2026 50 yards away

  99% historically approved · decision due ~3 Dec

  T1-Walnut tree- crown reduction of approximately 3m on all aspects of tree.

  Awaiting decision Trees 3 docs

• Flat A, 115 Richmond Avenue, London, N1 0LR

  P2019/3451/TRE Submitted 13 Nov 2019 50 yards away

  Rear garden Robinia pseudoacacia - Reduce canopy width by 20% (up to 3 metres) and reduce the overhang to other gardens. Remove low hanging/larger branches that are hanging directly into neighbouring gardens and over neighouring trees.

  Granted Trees 2 docs

• 11 Lonsdale Square, London, N1 1EN

  P2021/1626/FUL Submitted 4 Jun 2021 50 yards away

  Installation of metal safeguarding railings and gate are the rear of property. (Listed building consent also submitted ref:P2021/1646)

  Granted Householder 11 docs
  Domestic

• 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