Mulalley has won a £210m deal to work as a sole provider for all planned maintenance and general improvement building works for Croydon Council, UK.
The long-term contract will be extending for up to 14 years, with works expected to start from April this year.
Mobilisation for the programme will be starting within this month only, Mulalley said.
The UK-based real estate builders and construction firm has been working in partnership with Croydon Council for the last ten years.
It had been awarded the council's Decent Homes contract and is also responsible for their external re-decoration and associated repair works.
Mulalley operations director Bruce Benson said: "We are thrilled to have won this significant contract continuing Croydon Council's transformation of their housing stock.
"I think this win highlights the strength of our team, our approach to partnering and the quality and value of the work we have delivered over the last ten years.
"We look forward to using our local knowledge and expertise and again providing employment for local supply chains, training and apprenticeships, to make a considerable difference to the Croydon area over the coming years."
In December, the developer had announced about a project involving the transformation of a row of rundown undercroft garages into homes for buying and renting in Islington.
The development was done for Williamson Street Estate and includes installation of new security doors, new lifts, more green space and a refurbished and extended community centre.