The council plans to invite tenders for the £350m project to redevelop the 1930s Belgravia estate next month after first earmarking it for regeneration eight years ago.
Ebury Bridge Estate is the biggest of 10 planned estate redevelopment plans within the London borough.
The project involves demolition of around eight buildings to make way for 750 homes, half of which would be affordable.
Last month the council committed to self-deliver an initial phase, comprising over 200 new, mixed tenure homes and the first of the new open public squares, setting the design quality and delivery intentions for the new Ebury.
This will be run and funded by Westminster’s wholly-owned development company set up to deliver and own new intermediate rent, market rent and sale housing across the borough.
This initial phase will enable the council to fulfil its re-housing commitments locally and achieve vacant possession of later phases.
The successful design and build partner would start phase 1 construction before the end of 2020, with the spend estimated at £100m-£340m depending on phasing.
Firms seeking to express an interest in the project should email Samantha Rogers for additional information.