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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
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 Status unknown

    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 Status unknown

    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 500 metres

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

    P2026/1918/LBC Submitted 17 Jul 2026 0m away

    92% historically approved · decision due ~17 Sep

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

    Status unknown Heritage and listed buildings Extension

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

    P2026/1917/FUL Submitted 23 Jul 2026 0m away

    86% historically approved · decision due ~17 Sep

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

    Status unknown Full applications Extension

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

    P2026/1600/AOD Submitted 18 Jun 2026 0m 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 0m 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 40m 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 40m 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

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    361 - 363 Goswell Road, London, EC1V 7JL

    Replacement shopfront advertisements comprising new fascia lettering, one projec

    16 Jul 2026 Heritage and listed buildings
  • P2026/1626/LBC Granted

    5 Cumberland Gardens, London, WC1X 9AF

    Installation of stone paving to front steps, heat pump in garden, new lower grou

    22 Jun 2026 Heritage and listed buildings
  • P2026/2309/LBC Status unknown

    27 Barnsbury Park, London, N1 1HQ

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

    2 Sep 2026 Heritage and listed buildings
  • P2026/2176/LBC Status unknown

    6A, Cloudesley Square, London, N1 0HT

    Targeted repointing and repair works across three specific zones of the propert

    1 Sep 2026 Heritage and listed buildings
  • P2026/2302/LBC Status unknown

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

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

    1 Sep 2026 Heritage and listed buildings