Rise Lodge Developments awarded the £40m deal to build a care complex that will include 128 apartments and nine cottages, alongside a 93-bed care home.
Willmott Dixon will be working with KWL Architects and Andrew Wilson Partnership to deliver the scheme on Rise Road in Sunninghill, which will be complete in summer 2016.
Construction is due to start on site later this month.
It is the largest contract for the company’s housing business this year and follows a £30m project awarded by ISIS Waterside Regeneration in January for phase one of a regeneration by the Grand Union Canal in Brentford.
Charlie Scherer, chief operating officer at Willmott Dixon’s housing company, said: “Latest government data tells us that by 2030, we will see a 50% rise in the number of over-65s and a doubling in over-85s.
“Developing new communities such as this scheme in Sunninghill creates environments in which people can enjoy their retirement years to the full, while also having support when needed.”