The Abbey Area redevelopment on Belsize Road in North London will see 240 homes built over three phases, alongside health and energy centres and a supermarket.
The council is now looking for a design and build contractor to deliver the first phase, estimated to have a construction value of £39m, consisting of a 14-storey tower and attached to a long six storey block.
A contract will be awarded in February, with a five month design development and value engineering period, before construction begins in August next year.
Phase 1 already has detailed planning consent, phases 2 and 3 outline consent.
To express an interest and receive more information register on the etendering system.