Council planning record

Rear extension at ground floor rebuilt and extended, with rear lightwell infill at lower ground floor with associated external works.

20 Great Percy Street, London, WC1X 9QP

FINAL DECISIONReference: P2026/1917/FULLondon Borough of Islington

Last published check: 29 Sept 2026, 02:26. Check the council record for more recent changes.

Application location

20 Great Percy Street, London, WC1X 9QP

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Application summary

Status
FINAL DECISION
Application type
Full Planning Application
Received
17 Jul 2026
Validated
23 Jul 2026
Determination deadline
16 Sept 2026
Local authority
London Borough of Islington

Application overview

Rear extension at ground floor rebuilt and extended, with rear lightwell infill at lower ground floor with associated external works.

Proposal details

Reference
P2026/1917/FUL
Alternative references
PP-15091160
Ward
Clerkenwell
Agent
Anna Janiak
UPRN
5300037322

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Documents 18 of 18

DocumentPublishedAction
Application Form - Without Personal DataApplication Form17 Jul 2026View
Location PlanLocation Plan17 Jul 2026View
Existing elevationsDrawings - Existing17 Jul 2026View
SUPERSEDED propsoed rear elevationApplication Drawings - Superseded17 Jul 2026View
Existing sectionsDrawings - Existing17 Jul 2026View
Proposed sectionDrawings - Proposed17 Jul 2026View
Community Infrastructure Levy FormSupporting Documentation17 Jul 2026View
Sustainable Design and Construction StatementSupporting Documentation17 Jul 2026View
Heritage StatementSupporting Documentation17 Jul 2026View
Existing ground and lower ground floor planDrawings - Existing17 Jul 2026View
Proposed ground and lower ground floor planDrawings - Proposed17 Jul 2026View
SUPERSEDED existing and propsoed first floor planApplication Drawings - Superseded17 Jul 2026View
Existing and proposed roof planDrawings - Proposed17 Jul 2026View
Existing and Proposed First FloorDrawings - Proposed18 Sept 2026View
Proposed Elevations (revised)Drawings - Proposed18 Sept 2026View
Revised Heritage StatementSupporting Documentation18 Sept 2026View
delegated reportDelegated Report28 Sept 2026View
DN FINALDecision Notice Final28 Sept 2026View

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Application timeline

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  1. Application date

    Published milestoneCouncil source
  2. Received date

    Published milestoneCouncil source
  3. Registration date

    Published milestoneCouncil source
  4. Valid date

    Published milestoneCouncil source
  5. Press notice start date

    Published milestoneCouncil source
  6. Site notice date

    Published milestoneCouncil source
  7. Consultation expiry date

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    Council source
  8. Statutory expiry date

    Past published deadline

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    Council source
  9. Publicity end date

    Past published deadline

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    Council source
  10. Site notice end date

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    Council source
  11. Decision due date

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    Council source
  12. Dispatch date

    Published milestoneCouncil source
  13. Decision date

    Published milestoneCouncil source
  14. Extension date

    Past published deadline

    A published target or deadline. It does not confirm an outcome.

    Council source

Decision & conditions

Approve with conditions
DN FINAL
Planning conditions
  1. 3 YEAR CONSENT PERIOD: The development hereby permitted shall be begun not later than the expiration of three years from the date of this permission. REASON: To comply with the provisions of Section 91(1)(a) of the Town and Country Planning Act 1990 as amended by the Planning and Compulsory Purchase Act 2004 (Chapter 5).
  2. DRAWING AND DOCUMENT NUMBERS: The development hereby approved shall be carried out in accordance with the following approved plans: A 0047 GA 00 2001 (20) GA Proposed Plans; A 0047 GA 00 2002 01 Rev. 01 First Floor Plans; A 0047 GA 00 2003 (20) GA Roof Plans; A 0047 GA 00 2006 01 Rev. 01 (20) GA Proposed Elevations; A 0047 GA 00 2008 (20) Proposed Section; Location Plan dated 17-Jul-2026; Heritage Statement prepared by anna janiak studio; Sustainable Design and Construction Statement. REASON: To comply with Section 70(1)(a) of the Town and Country Act 1990 as amended and the Reason for Grant and also for the avoidance of doubt and in the interest of proper planning.
  3. MATERIALS (COMPLIANCE): The development shall be constructed in accordance with the schedule of materials noted on the plans and within the Design and Access Statement. The development shall be carried out strictly in accordance with the details so approved and shall be maintained as such thereafter. REASON: In the interest of securing sustainable development and to ensure that the resulting appearance and construction of the development is of a high standard.
  4. GREEN/BROWN BIODIVERSITY ROOFS (COMPLIANCE): The green roof hereby approved shall be: a) biodiversity based with extensive substrate base (depth 80-150mm); b) laid out in accordance with plan A 0047 GA 00 2002 01 hereby approved; and c) planted/seeded with a mix of species within the first planting season following the practical completion of the building works (the seed mix shall be focused on wildflower planting, and shall contain no more than a maximum of 25% sedum). The biodiversity green roof shall not be used as an amenity or sitting out space of any kind whatsoever and shall only be used in the case of essential maintenance or repair, or escape in case of emergency. The biodiversity roof shall be carried out strictly in accordance with the details so approved and shall be maintained as such thereafter. REASON: To ensure the development provides the maximum possible provision towards creation of habitats and valuable areas for biodiversity.
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