Plans have been submitted for the first phase of an 8,000-home scheme that could be worth as much as £1.6bn.
Phase one of the 843 ha mixed-use Manydown project west of Basingstoke in Hampshire will deliver 3,200 homes if approved.
Construction could start in 2019.
Basingstoke and Deane Borough Council and Hampshire County Council, the joint landowners of the scheme, plan to deliver a total of 8,000 homes as well as business space, shops, two primary schools, one secondary school and a 100 ha country park.
The councils are in the process of selecting a development partner to form a JV to deliver the scheme.
Bidding for the role was launched in May last year and the successful firm will be appointed this summer.
Hampshire County Council leader Roy Perry said: “Manydown offers one of the best residential development opportunities in England and we are very pleased to submit the outline planning application.
“As joint landowner of this key site, we are committed to the future of the development, which we believe will reflect the great character of Hampshire as a place to live, work and prosper. We look forward to taking the next steps in its progression.”