Excavation of double storey basement extending under house, front and rear gardens and underneath the pavement to Craven Hill, associated replacement of rear garden staircase and garden room and boundary railings, and alterations to front lightwell. Replacement of storage shed with louvred structure for air conditioning equipment.

Excavation below main building and front and rear gardens to create a two storey basement and associated replacement of rear garden staircase and garden room. Replacement of storage shed with louvred structure for air conditioning equipment. Creation of tunnel connecting existing main house and mews property to convert 23 Craven Hill and 23A Craven Hill into a single household dwelling.

Excavation of a basement under footprint of the house and part of front and rear garden incorporating lightwells, demolition of existing rear conservatory and erection of a single storey glazed rear extension, removal of rear dormer and erection of new dormer window, installation of replacement rooflights, replacement/repair of windows, rebuilding of existing timber shed, installation of vehicular gates, installation of plant in enclosures at the side of the building, and general internal/external refurbishment works. (Linked to 20/03116/LBC)