Realty firm MKS Ventures said it will invest around Rs.400-crore to develop a socio-culture centre and commercial complex in the national capital in partnership with the DDA. The company has bagged this 11-acre project at Rohini from the DDA through bidding process, its director Sunil Totlani said. The construction work will start by March-next-year and the project is expected to be completed by 2023-end.