The firm was named preferred bidder last December to deliver seven supported housing schemes across the county.
The firm’s partnerships arm will build around 240 homes providing supported living for vulnerable adults across Kent, as well as communal facilities.
Also Galliford Try will invest in the funding for the project and will provide ongoing facilities maintenance and lifecycle management services in operating the scheme.
The building cost is expected to be around £38m with the FM portion making up the rest of the deal.
Housing Management services for the project will be provided by Galliford Try’s partner, the West Kent Housing Association.
Galliford Try Chief Executive Greg Fitzgerald said: “We are now able to get the project underway. Extra Care remains an important sector for Galliford Try and we look forward to providing the high quality homes and facilities that Kent’s residents deserve.”