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Planning application

20 Great Percy Street, London, WC1X 9QP

Granted Islington P2025/2307/LBC Listed Building

Works: Extension

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

Proposal

Rear extension at ground floor rebuilt and extended, with rear lightwell infill

As published by the council, reference P2025/2307/LBC

Application record

Reference
P2025/2307/LBC
Type
Listed Building
Decision
Granted As published: Approve with conditions
Received
11 Aug 2025
Validated
19 Aug 2025
Decided
13 Jan 2026
Postcode
WC1X 9QP

Site history

Applications at this address on the Islington register

This site has had 5 applications since 2025: 3 approved, 0 refused.

  • P2026/1917/FUL Awaiting decision

    20, Great Percy Street, London, WC1X 9QP

    Rear extension at ground floor rebuilt and extended, with rear lightwell infill

    Submitted 23 Jul 2026 Full applications
  • P2026/1918/LBC Awaiting decision

    20, Great Percy Street, London, WC1X 9QP

    Rear extension at ground floor rebuilt and extended, with rear lightwell infill

    Submitted 17 Jul 2026 Heritage and listed buildings
  • P2026/1600/AOD Granted

    20, Great Percy Street, London, WC1X 9QP

    Approval of details pursuant to condition 4 ( plumbing and ventilation details)

    Decided 20 Aug 2026
  • P2025/2306/FUL Granted

    20 Great Percy Street, London, WC1X 9QP

    Rear extension at ground floor rebuilt and extended, with rear lightwell infill

    Decided 13 Jan 2026 Householder

Timeline

Dates from the published record

  1. 11 Aug 2025

    Received by Islington

  2. 19 Aug 2025

    Validated

    Checked as complete and ready for consideration.

  3. 13 Jan 2026

    Decision issued: Approve with conditions

  4. 8 Aug 2026

    Added to PlanIndex

What this grant of permission means

Islington granted permission on 13 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 heritage and listed building applications

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 20, Great Percy Street, London, WC1X 9QP

    P2026/1918/LBC Submitted 17 Jul 2026 50 yards away

    93% historically approved · decision due ~17 Sep

    Rear extension at ground floor rebuilt and extended, with rear lightwell infill

    Awaiting decision Heritage and listed buildings Extension
  • 20, Great Percy Street, London, WC1X 9QP

    P2026/1917/FUL Submitted 23 Jul 2026 50 yards away

    87% historically approved · decision due ~17 Sep

    Rear extension at ground floor rebuilt and extended, with rear lightwell infill

    Awaiting decision Full applications Extension
  • 20, Great Percy Street, London, WC1X 9QP

    P2026/1600/AOD Submitted 18 Jun 2026 50 yards away

    Approval of details pursuant to condition 4 ( plumbing and ventilation details)

    Granted
  • 20 Great Percy Street, London, WC1X 9QP

    P2025/2306/FUL Submitted 11 Aug 2025 50 yards away

    Rear extension at ground floor rebuilt and extended, with rear lightwell infill

    Granted Householder Extension
    Domestic
  • 5 Cumberland Gardens London, WC1X 9AF

    P2025/3676/FUL Submitted 23 Dec 2025 50 yards away

    Replacement of existing timber windows and doors with double-glazed timber windows/doors.

    Granted Householder Windows or glazing 10 docs
    Domestic
  • 5 Cumberland Gardens, London, WC1X 9AF

    P2021/1018/FUL Submitted 1 Apr 2021 50 yards away

    Repairs to the roof of the house including renewing the existing felt with a new, breathable felt; replacing existing slates with Spanish natural slates; renewing lead flashings; renewing the lead box gutter; replacing the rotten sections of the window frame of the dormer window with like for like matching wooden frame; removing and renewing areas of damaged cement work on parapet walls (Listed building consent also submitted ref. P2021/1077/LBC)

    Granted Householder Loft or dormer Windows or glazing 16 docs
    Domestic

In Islington

  • P2026/2302/LBC Granted

    32, 34, 36 & 38, Amwell Street, London, EC1R 1XT

    Replacement of internal flat entrance doors, architraves and fanlights, install

    Received 1 Sep, published by the council 7 Sep 2026 Heritage and listed buildings
  • P2026/2220/LBC Granted

    34, SUDELEY STREET, LONDON, ISLINGTON, N1 8HW

    Retrospective Listed Building Consent application for reroofing the front 'butt

    Received 17 Aug, published by the council 24 Aug 2026 Heritage and listed buildings
  • P2026/2272/LBC Granted

    355 St John Street, London, EC1V 4LB

    Replacement of internal flat entrance doors, architraves and fanlights, install

    Received 27 Aug, published by the council 7 Sep 2026 Heritage and listed buildings
  • P2026/2309/LBC Granted

    27 Barnsbury Park, London, N1 1HQ

    Replacement of internal flat entrance doors, architraves and fanlights, install

    Received 2 Sep, published by the council 7 Sep 2026 Heritage and listed buildings
  • P2026/2597/LBC Awaiting decision

    28, Gerrard Road, London, N1 8BA

    The replacement of fittings and reorganisation of first floor bathroom, the adj

    Received 1 Oct, published by the council 5 Oct 2026 Heritage and listed buildings