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Planning application

Flat 3, 9 Highbury Hill, London, N5 1SU

Granted Islington P2025/3270/FUL Full Planning Application

Works: Windows or glazing

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Replacement of five existing single-glazed sash window panes with heritage sliml

As published by the council, reference P2025/3270/FUL

Application record

Reference
P2025/3270/FUL
Type
Full Planning Application
Decision
Approve with conditions
Received
20 Nov 2025
Validated
25 Nov 2025
Decided
14 Jan 2026
Postcode
N5 1SU

Timeline

Dates from the published record

  1. 20 Nov 2025

    Received by Islington

  2. 25 Nov 2025

    Validated

    Checked as complete and ready for consideration.

  3. 14 Jan 2026

    Decision issued: Approve with conditions

  4. 8 Aug 2026

    Added to PlanIndex

What this grant of permission means

Islington granted permission on 14 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.

About full applications

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.

Nearby applications

Within 500 metres

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    P2025/2030/TRE Submitted 16 Jul 2025 2m away

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  • 27, Highbury Hill, London, N5 1SU

    P2025/2349/TRE Submitted 15 Aug 2025 11m away

    100% historically approved · decision due ~19 Nov

    Tree Removal Section 211 Notification – Islington Conservation Area Site Address: 27 Highbury Hill Tree Details: Tree 1 Species: Crabapple tree Location: Rear garden, close to boundary party wall Proposed Work: Removal Tree 2 Species: Japanese Maple tree Location: Rear garden, close to boundary party wall Proposed Work: Removal Reason for Proposed Work The two trees are located within the rear garden of the property, in close proximity to the boundary party walls. Construction works are currently being carried out nearby, as part of a previously approved rear extension and basement excavation. The newly approved structure is positioned on top of or very close to the current location of both trees. Given their proximity to the construction area, retaining or relocating the trees poses a high risk to their long-term health, particularly due to potential damage to their root systems. For this reason, we are proposing their removal. We intend to replace the trees with new ones following completion of the building works. The replacement trees will be planted in more suitable locations within the garden, and low-level vegetation will also be introduced to enhance the landscaping.

    Awaiting decision Trees 4 docs

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