21 Astell Street, London, SW3 3RT

1. 5 Jun 2026

   Received by Kensington and Chelsea

2. 3 Jul 2026

   Decision issued: Raise No Objection

3. 20 Jul 2026

   Added to PlanIndex

4. 3 Aug 2026

   Status changed to Decided

   Previously Pre-Determination Stage.

Kensington and Chelsea granted permission on 3 July 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.

The published feed does not state which type of application this is; the register entry on Kensington and Chelsea's portal will say. Our guide explains the common types.

• 11 Astell Street, London, SW3 3RT

  PP/23/00586 Submitted 24 Jan 2023 0m away

  Insertion of new window to rear at existing basement level, creation of lightwell to rear and alteration to patio wall and stairs.

  Granted Full applications Windows or glazing 18 docs

• 9 Astell Street, London, SW3 3RT

  PP/26/01841 Submitted 18 Mar 2026 0m away

  Enlargement of existing ground floor rear extension with additional skylight

  Granted Full applications Extension 23 docs

• 31 Astell Street, London, SW3 3RT

  CON/23/06229 Submitted 25 Sep 2023 0m away

  Details required by Condition 8 (Surface water drainage (SuDS)) of planning permission PP/21/04655 (Erection of single storey infill and rear extension at ground floor level. Excavation and construction of new basement under proposed ground floor footprint and partially under both front and rear gardens)

  Granted Conditions Extension 8 docs
  Small domestic

• 29 Astell Street, London, SW3 3RT

  CON/23/07404 Submitted 13 Nov 2023 0m away

  Details required by Conditions 8 (small scale sampling -a) Searches of readily available environmental and historical information (EHI) and a soil sampling and analyses exercise (SAE) are undertaken for any garden, landscaping and/or yard (GLY) area and a corresponding SAE report is produced.b) Where mean concentrations of a contaminant within the soil over a part of or the whole of a site exceed generic or detailed quantitative risk assessment criteria (RAC), a remediation strategy (RS) will be produced); 9 (ground gas and vapour protection for extensions conditions (full discharge) of planning permission PP/22/07636 (Alterations including extending rear ground floor elevation, together with squaring off back at first floor level and provision of roof lantern and flue at roof level. Replacement of existing garage door with window to match other houses in terrace and new front door to front elevation. Alterations to rear elevation including new windows together with an a/c unit, acoustic enclosure, timber pergola, and garden store to rear)

  Granted Conditions Extension Windows or glazing 23 docs

• 29 Astell Street, London, SW3 3RT

  PP/22/01116 Submitted 21 Feb 2022 0m away

  Alterations including provision of a basement under footprint of property, extending rear ground floor elevation, together with squaring off back at first floor level and provision of roof lantern and flue at roof level. Alterations to front elevation including replacing existing garage door with a window, and new front door. Alterations to rear elevation including new windows.

  Granted Full applications Windows or glazing 43 docs

• 29 Astell Street, London, SW3 3RT

  CON/23/05897 Submitted 8 Sep 2023 0m away

  Details required by conditions 8 (small scale sampling) and 9 (ground as and vapour protection for extensions condition) of planning permission 22/07636 (Alterations including extending rear ground floor elevation, together with squaring off back at first floor level and provision of roof lantern and flue at roof level. Replacement of existing garage door with window to match other houses in terrace and new front door to front elevation. Alterations to rear elevation including new windows together with an a/c unit, acoustic enclosure, timber pergola, and garden store to rear)

  Refused Conditions Extension Windows or glazing 20 docs