Wimpey had been told by Solihull council that it did not need to include any social housing as other sites met this demand.
Last week the housebuilder submitted a revised application that included the affordable housing element.
Bruce Malin, development director of Wimpey Homes' West Midlands office, said: "There is hardly any difference between the two schemes apart from the 25% social housing element. It's essentially the same."
The Marston Green scheme is significant because it was one of three refused by Prescott in the run-up to last month's urban summit, when he called on housebuilders to produce more houses.
This has led to claims from some in the industry that the government is applying planning and policy guidance too strictly and making the housing shortage worse.