Located at the gateway to the UNESCO World Heritage Site and overlooking the River Derwent and Darley Park, the new £10m development consists of 82 extra care apartments spread over four storeys.
All apartments have two bedrooms, a spacious open plan kitchen, dining and living area and a fully accessible wet-room.
The development also features other facilities, including a courtyard garden, restaurant/café and shop, along with hobby and therapy rooms, laundry room and mobility scooter store with charging points.
Work on the project, which has been a unique and very complex one, started early 2014 and was handed over to Derby City Council in 2016.
Following a ribbon cutting ceremony, there were speeches from Councillor Fareed Hussain Cabinet Member for Urban Renewal, Chris Neve, managing director of Radleigh Homes and Maria Murphy, managing director of Derby Homes.
Councillor Fareed Hussain, Cabinet Member for Urban Renewal, said: “It is great that as a council we can invest in schemes such as this which help provide accommodation to people with a mix of care and support needs. It will not only support members of the public but form part of the river defence which is important for us as a city.”
Chris Neve, joint managing director of Radleigh Homes, said: “The story of the redevelopment of Bath St Mill into this fabulous extra-care facility is a wonderful example of the energy, commitment, mutual respect, teamwork, skill and positive attitude shown by every single person involved in this project - from the team at Derby City Council and Derby Homes to all the specialist architects, engineers and the entire building team involved on the 18-month build programme.
“This scheme has been led locally, designed locally and constructed by local tradesmen, which shows the strength of a thriving local economy."
Earlier this week Radleigh Homes had been acquired by Redrow PLC, allowing Redrow to expand its operations in the East Midlands, and establish a new division in the region.