6 Eccleston Square London SW1V 1NP

This site has had 2 applications since 2025: 2 approved, 0 refused.

• 25/07423/LBC Granted

  6 Eccleston Square London SW1V 1NP

  Full refurbishment of Flat 6 involving the demolition of the existing modern mansard roof and dormers at 4th level, and of the terrace above the 4th Floor and creation of a new roof with a sunk terrace, recessed from both elevations, in the middle section of the roof, insertion of a hinged sky door fit in the roof and creation of an internal stair for accessing the roof terrace, layout improvement of the 4th floor with minor alterations of the bedrooms configuration and the enlargement of existing bathroom, with the provision of a skylight about the bath/ shower area, vertical extension of the existing cantilevered rear extension, with the creation of a new rear extension volume above, partially covering the existing rear extension, housing a shower area and improvement of existing WC on the landing in between the 3rd and 4th floors; layout optimization of the 3rd floor and renewal of the existing modern double-glazing windows with new like to like timber, slim line double glazed conservation windows and installation of ASHP heat pump.

  Decided 23 Apr 2026 Heritage and listed buildings

1. 14 Oct 2025

   Received by Westminster

2. 30 Oct 2025

   Validated

   Checked as complete and ready for consideration.

3. 23 Apr 2026

   Decision issued: Application Permitted

4. 21 Jul 2026

   Added to PlanIndex

• 25/07423/LBC Granted

  6 Eccleston Square London SW1V 1NP

  Full refurbishment of Flat 6 involving the demolition of the existing modern mansard roof and dormers at 4th level, and of the terrace above the 4th Floor and creation of a new roof with a sunk terrace, recessed from both elevations, in the middle section of the roof, insertion of a hinged sky door fit in the roof and creation of an internal stair for accessing the roof terrace, layout improvement of the 4th floor with minor alterations of the bedrooms configuration and the enlargement of existing bathroom, with the provision of a skylight about the bath/ shower area, vertical extension of the existing cantilevered rear extension, with the creation of a new rear extension volume above, partially covering the existing rear extension, housing a shower area and improvement of existing WC on the landing in between the 3rd and 4th floors; layout optimization of the 3rd floor and renewal of the existing modern double-glazing windows with new like to like timber, slim line double glazed conservation windows and installation of ASHP heat pump.

  Decided 23 Apr 2026 Heritage and listed buildings

1 later application on the register refers to this one:

• 25/07423/LBC Granted

  6 Eccleston Square London SW1V 1NP

  Full refurbishment of Flat 6 involving the demolition of the existing modern mansard roof and dormers at 4th level, and of the terrace above the 4th Floor and creation of a new roof with a sunk terrace, recessed from both elevations, in the middle section of the roof, insertion of a hinged sky door fit in the roof and creation of an internal stair for accessing the roof terrace, layout improvement of the 4th floor with minor alterations of the bedrooms configuration and the enlargement of existing bathroom, with the provision of a skylight about the bath/ shower area, vertical extension of the existing cantilevered rear extension, with the creation of a new rear extension volume above, partially covering the existing rear extension, housing a shower area and improvement of existing WC on the landing in between the 3rd and 4th floors; layout optimization of the 3rd floor and renewal of the existing modern double-glazing windows with new like to like timber, slim line double glazed conservation windows and installation of ASHP heat pump.

  Decided 23 Apr 2026 Heritage and listed buildings

Westminster granted permission on 23 April 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.

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.

• 6 Eccleston Square London SW1V 1NP

  25/07423/LBC Submitted 14 Oct 2025 50 yards away

  Full refurbishment of Flat 6 involving the demolition of the existing modern mansard roof and dormers at 4th level, and of the terrace above the 4th Floor and creation of a new roof with a sunk terrace, recessed from both elevations, in the middle section of the roof, insertion of a hinged sky door fit in the roof and creation of an internal stair for accessing the roof terrace, layout improvement of the 4th floor with minor alterations of the bedrooms configuration and the enlargement of existing bathroom, with the provision of a skylight about the bath/ shower area, vertical extension of the existing cantilevered rear extension, with the creation of a new rear extension volume above, partially covering the existing rear extension, housing a shower area and improvement of existing WC on the landing in between the 3rd and 4th floors; layout optimization of the 3rd floor and renewal of the existing modern double-glazing windows with new like to like timber, slim line double glazed conservation windows and installation of ASHP heat pump.

  Granted Heritage and listed buildings Extension Loft or dormer +3 39 docs

• 1D Eccleston Square London SW1V 1NP

  26/01575/LBC Submitted 11 Mar 2026 50 yards away

  90% historically approved · decision due ~21 May

  Installation of four replacement timber sash windows within mansard roof storey.

  Awaiting decision Heritage and listed buildings Loft or dormer Windows or glazing 16 docs

• 9 Eccleston Square London SW1V 1NP

  26/02081/ADLBC Submitted 30 Mar 2026 50 yards away

  89% historically approved · decision due ~25 May

  Details of stucco repair method statement pursuant to condition 4 of listed building consent dated 7th October 2025 (RN: 25/06030/LBC).

  Awaiting decision Conditions 4 docs

• Flat 2 5 Eccleston Square London SW1V 1NP

  26/00686/LBC Submitted 5 Feb 2026 50 yards away

  90% historically approved · decision due ~2 Apr

  Replacement of roof and rooflights to rear closet wing at first floor level with associated raising of existing parapet.

  Awaiting decision Heritage and listed buildings Loft or dormer 17 docs

• Flat 2 5 Eccleston Square London SW1V 1NP

  26/00685/FULL Submitted 5 Feb 2026 50 yards away

  88% historically approved · decision due ~2 Apr

  Replacement of roof and rooflights to rear closet wing at first floor level with associated raising of existing parapet.

  Awaiting decision Full applications Loft or dormer 21 docs

• 1D Eccleston Square London SW1V 1NP

  26/02019/FULL Submitted 26 Mar 2026 50 yards away

  88% historically approved · decision due ~21 May

  Installation of four replacement timber sash windows within mansard roof storey.

  Awaiting decision Full applications Loft or dormer Windows or glazing 15 docs

• 26/07528/FULL Awaiting decision

  69 Eaton Place London SW1X 8DF

  Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

  Received 5 Nov, published by the council 6 Nov 2026 Full applications
• 26/05200/FULL Decided

  1 The Court House 165 Seymour Place London W1H 4PU

  Installation of waterproofing system to the existing lead flat roofs

  Received 3 Aug, published by the council 28 Aug 2026 Full applications
• 26/07521/FULL Awaiting decision

  Flat 18 Harlequin Court 20 Tavistock Street London WC2E 7NZ

  Installation of one external condenser unit

  Received 4 Nov, published by the council 6 Nov 2026 Full applications
• 26/07508/FULL Awaiting decision

  Buckingham Palace The Mall London SW1A 1AA

  Replacement of existing security lighting to the Buckingham Palace Forecourt with 80 compact LED spotlights installed within the lantern clusters across 10 principal piers, with associated concealed cabling and reversible fixings. (Linked with 26/07509/LBC)

  Received 4 Nov, published by the council 5 Nov 2026 Full applications
• 26/07472/FULL Awaiting decision

  Flat 3 82 New Cavendish Street London W1G 9TA

  Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07473/LBC)

  Received 3 Nov, published by the council 6 Nov 2026 Full applications