Places for People has already built 250 homes at the Brooklands development on the land adjacent to junction 14 of the M1 motorway.
It has now called in Barratt Homes to provide construction, development, accountancy and sales services for the 360 acre site.
Construction on the next phases will begin in May.
Places for People will remain responsible for Brooklands Square, a town square with shops and restaurants, which will be built within the next two years.
David Cowans, Chief Executive of Places for People said: “At a time when new housing is desperately needed, our partnership with Barratt will enable us to build new homes and community facilities at a much faster pace.
“Working together, we will be able to develop the site more quickly than would otherwise have been possible, in particular the infrastructure that will continue to make Brooklands a great place to live such as the public realm, shops and schools.”
Andrew Swindell, Managing Director of Barratt Northampton, said: “Our business is expanding, built on our capability to deliver challenging projects on time.
“This site continues our heritage in Milton Keynes where we’ve built around 800 homes in the past five years. We have an outstanding track record of delivery and we will be on site as soon as possible.”