The Glass House 11-12 Lettice Street, London, SW6 4EH

This site has had 2 applications since 2026.

• P/2026/02507/LBC Awaiting decision

  The Glass House 11-12 Lettice Street, London, SW6 4EH

  External alterations to include; installation of 6no. rooflights in the rear roofslope and 2no. rooflights in the side roofslope; installation of 2no. air conditioning condenser units, and a like-for-like replacement of an existing timber framed window to the rear elevation at first floor level; internal alterations to include; creation of a mezzanine floor at second floor, reconfiguration of the existing floorspace at first floor level, incorporating the lowering of an existing mezzanine at first floor level and the addition of new internal stairs and walkways, including glazed partitions and screening, works to the existing roof structure to facilitate a thermal upgrade; associated internal and external alterations.

  Submitted 11 Sep 2026 Heritage and listed buildings

1. 11 Sep 2026

   Received by Hammersmith and Fulham

2. 29 Sep 2026

   Validated

   Checked as complete and ready for consideration.

3. 6 Oct 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 24 November 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Hammersmith and Fulham took a median of 80 days over the applications it decided in the last year.

This application is with Hammersmith and Fulham for determination, against a statutory target of eight weeks. Over the last year Hammersmith and Fulham decided full applications in a median of 105 days. More in our guide to how long planning decisions take.

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.

• The Glass House 11-12 Lettice Street, London, SW6 4EH

  P/2026/02507/LBC Submitted 11 Sep 2026 50 yards away

  100% historically approved · decision due ~24 Nov

  External alterations to include; installation of 6no. rooflights in the rear roofslope and 2no. rooflights in the side roofslope; installation of 2no. air conditioning condenser units, and a like-for-like replacement of an existing timber framed window to the rear elevation at first floor level; internal alterations to include; creation of a mezzanine floor at second floor, reconfiguration of the existing floorspace at first floor level, incorporating the lowering of an existing mezzanine at first floor level and the addition of new internal stairs and walkways, including glazed partitions and screening, works to the existing roof structure to facilitate a thermal upgrade; associated internal and external alterations.

  Awaiting decision Heritage and listed buildings Loft or dormer Windows or glazing 10 docs

• 8 Lettice Street, London, SW6 4EH

  P/2026/01472/FUL Submitted 9 Jun 2026 50 yards away

  98% historically approved · decision due ~11 Sep

  Replacement of the existing dormer window with an enlarged dormer window in the front roofslope; erection of a rear roof extension; erection of a dormer with French doors and a Juliet balcony in the rear roofslope; erection of glass balustrades in connection with the formation of a roof terrace above the roof of second floor rear back addition; conversion of the existing dwellinghouse into 2 x 2 bedroom self-contained flats.

  Awaiting decision Full applications New dwelling Extension +2 18 docs
  Domestic

• 46 Crookham Road London SW6 4EQ

  2019/01403/FUL Submitted 7 May 2019 50 yards away

  Erection of a single storey rear extension to the side of the existing back addition; installation of sliding doors to replace the existing sash window at lower ground floor level to the rear elevation.

  Granted Full applications Extension Windows or glazing 19 docs
  Small domestic

• Flat 2 5 Lettice Street London SW6 4EH

  2018/02183/VAR Submitted 3 Jul 2018 50 yards away

  Removal of condition 13 of planning permission ref: 2014/01133/FUL granted 10th June 2014 to allow the occupiers of the flat at first and second floor level to apply for off street parking permit.

  Refused Conditions 8 docs

• 50 Mimosa Street London SW6 4DT

  2020/01369/FUL Submitted 2 Jun 2020 50 yards away

  Erection of a single storey rear extension, to the side of the existing back addition, following the demolition of the existing side infill conservatory extension; replacement of existing window with new enlarged window to the rear elevation of the existing single storey back addition.

  Awaiting decision Full applications Extension Demolition +1 16 docs
  Small domestic

• Turner Studio 1C Lettice Street London SW6 4EH

  2018/01133/FUL Submitted 3 May 2018 50 yards away

  Erection of a side and rear extension at first floor level; installation of an enlarged dormer with 3no windows to replace the existing dormer window and rooflight in the front roofslope; installation of new windows to replace the existing windows to the side of ground floor back additions to courtyard elevation; installation of a new window and replacement of existing front entrance doors with new doors at ground floor level to the front elevation; lowering of ground floor level (Revised drawings receieved).

  Granted Full applications Extension Loft or dormer +1 34 docs

• P/2026/00774/FUL Granted

  6 Flat B First And Second Floors,Hetley Road,London,Hammersmith And Fulham,W12 8BB

  Raising of parapet wall and erection of steel posts and glass balustrades around the flat roof of the two storey rear back addition at second floor level, in connection with its use as a roof terrace; installation of French doors to replace the existing sash window at second floor level to the rear elevation.

  Received 17 Mar, published by the council 24 Jul 2026 Full applications
• P/2026/02559/FUL Awaiting decision

  34 Oaklands Grove, London, W12 0JA

  Erection of a rear roof extension, involving an increase in the ridge height by 300mm, and including the installation of French doors and a Juliet balcony; erection of a single storey rear extension, to the side and rear of the existing back addition; installation of 2no. roof lights in the front roof slope; installation of French doors and a Juliet balcony to replace existing window to the rear elevation of the existing back addition at second floor level; formation of a roof terrace to the rear elevation at first floor level, enclosing part of the flat roof of the proposed single storey rear extension with a 1.7 metre high obscured glazed screen;

  Received 6 Oct, published by the council 11 Oct 2026 Full applications
• P/2026/01606/FUL Granted

  Flat 1 Maisonette Basement And Ground Floor, 41 Addison Gardens, London, W14 0DP

  Erection of an external staircase to the rear elevation from upper ground to lower ground floor level; and installation of a French door following the removal of an existing window, to the rear elevation at upper ground floor level.

  Received 23 Jun, published by the council 24 Jul 2026 Full applications
• 2026/00333/FUL Granted

  Flat B First And Second Floors, 6 Hetley Road, London, W12 8BB

  Replacement of 1no existing window with new double glazed timber framed windows at second floor level to the front and rear elevations; replacement of 1no existing single window and 1no bay window comprising of 3no window glazing with new double glazed timber framed windows to the front elevation, and replacement of 1no existing window with a new double glazed timber framed window to the rear elevation at first floor level.

  Received 7 Feb, published by the council 24 Jul 2026 Full applications
• P/2026/01534/FUL Granted

  74 Flat Ground Floor,Townmead Road,London,Hammersmith And Fulham,SW6 2RU

  Erection of a single storey rear extension, to the side and rear of the existing back addition following the demolition of existing conservatory at the rear of the property. Replace window on main rear wall at ground floor level with glazed door and Juliet balcony.

  Received 16 Jun, published by the council 24 Jul 2026 Full applications