The Priory Stadium has been sold to Knight Developments for £2.8millon, almost eight years after the merger of Sudbury Town and Sudbury Wanderers.
The delay was due to the original developers not exercising their option on the former Town ground, and planning consent taking longer than anticipated.
Babergh Council is being paid 900,000 for a small area of land which Suffolk County Council insists is used for access to the site.
AFC Sudbury vice-chairman Peter Scott said: "The ransom strip payment has meant that our plans for community facilities, such as a synthetic all-weather, all-sports, training facility for all ages have had to be shelved.
"From the club's point of view this is hugely disappointing, but our efforts to achieve a more reasonable level of compensation have been unsuccessful."
After paying off historic loans, and capital gains tax, the club will press on with revised plans for a new clubhouse and changing rooms at King's Marsh.
But the hoped-for extension to the seated stand has also been shelved.