A massive new suburb including 13,500 new homes could be in the pipeline for the edge of Northampton as part of plans to expand the county by 2026.
The vision for the Preston Green development, which would be about four times the size of Towcester, is currently being drawn up by chartered surveyors Carter Jonas.
The 850-hectare site would fall between Great Houghton, Grange Park and the eastern side of Northampton as well as taking in the villages of Preston Deanery and Quinton.
A spokeswoman for the firm said: "Preston Green falls partly within the south eastern option for the expansion of Northampton.
The vision document outlines how this area could be developed, should a planning inspector find that this is the most appropriate and sustainable option. However, this is obviously still at a very early stage.
"If this option was included in the adopted core strategy, the developers would then need to apply for planning permission. Therefore construction would be unlikely to begin for several years if successful."
Developers are waiting to find out the preferred sites from the Joint Planning Unit, which is in charge of managing the Government's plans to provide around 60,000 new homes in West Northamptonshire by 2026.
Brian Binley, Conservative MP for Northampton South and a resident of neighbouring Hackleton, said: "People have a massive investment in their locality and buying up the right to purchase land if planning permission is given does not match the investment of local people.
"It contains very many small communities, all unique, that have built up their community ambience over thousands of years and this proposal might change the face of that part of the world forever."
Initial proposals have been distributed to local authorities including neighbouring parish councils.
Jonathan Nunn, chairman of Wootton and East Hunsbury parish council, said: "It would be connecting villages that would have previously been thought of as rural with Northampton and we want to make sure the facilities arrive before all the houses."