|The County Flag of Northamptonshire, a banner of arms of Northamptonshire County Council (Photo credit: Wikipedia)|
The county council, which owns the site, has received £135,000 of lottery funding to form a "detailed development plan".
Jim Harker, council leader, said the site was a "true heritage jewel".
The heritage centre could be built along with a countrywide archaeological archives store. Further excavation would also take place on the site.
Archaeologists from the University of Northampton will be working with the council to excavate the site.
Steven Young, senior lecturer at the university, said: "This site is a microcosm of the archaeology of the county. It will be open to local people and allow them to find out about their roots."
"Its heritage survives under the ground in the landscape, the buildings, maps, photographs and people's memories."Jim Harker, leader of Northamptonshire County Council, said: "Chester Farm is a true heritage jewel, which has over 2,000 years of history in one place.
Mr Harker said an "ongoing exploratory excavation" involving 12 schools was already under way.
The 17th Century Chester Farm manor house, severely damaged by fire in 2010, was repaired using a £1.9m insurance pay-out.