Great Marlborough Estates has acquired Empire House, a landmark office tower on Chiswick High Road overlooking Turnham Green.
The one-acre site was previously owned by Lendlease and has planning consent to provide 137 residential units comprising 133 apartments and four town houses.
Designed by award-winning Assael Architecture, it will see Empire House redeveloped into one- and two-bedroom apartments and a new façade.
At Essex Place, which sits behind Chiswick High Road, 46 apartments and four townhouses will be built, with a further 21 apartments to be developed at the corner of Essex Place and Acton Lane.
All of the homes will benefit from access to private outdoor space such as a balcony or garden, as well as to communal roof terraces.
A new pedestrian-friendly space will also be created along with improvements to the surrounding public realm.