Work has started on the infrastructure for the 114-acre Suffolk Park to the east of Bury St Edmunds.
Jackson Civils is carrying out the work for developer Jaynic which will create thousands of jobs for the the area.
The site will provide 2 million sq ft of commercial space and already Treatt PLC has bought 10-acres for its new headquarters.
The business park also offers opportunities for logistics services with commercial units ranging from 50,000 to 750,000 sq ft of business, distribution and industrial units.
The site also includes 37-acres which have Enterprize Zone status.
The Jackson Civils contract includes earthworks and the creation of the main estate road from Lady Miriam Way to the Sybil Andrews Academy on Rougham Tower Avenue which opened on September 25.
Jackson will also install utilities on the site with foul and surface water drainage while a separate landscaping contract will be let shortly. The total cost of both is more than £3 million.
Simon Wilson, project director for Jaynic, said: “Our pro-active stance in constructing the infrastructure including superfast broadband means we can have buildings up and ready for occupiers by the third quarter of 2018.”
The Jackson Civils contract is due to be completed in April.
Councillor John Griffiths, leader of St Edmundsbury Borough Council, said: “We are pleased that the work on the infrastructure for Suffolk Business Park has now begun.
“St Edmundsbury Borough Council has supported this financially and together with Forest Heath District Council, have invested across West Suffolk as part of our overall aim to support the growth of business, jobs, skills and our future economic prosperity. West Suffolk is a continuing success story and sits on national and international trade links.
“It is part of an area that drives the UK economy and is an ideal place not only to set up or grow your business but bring up your family and enjoy our unique and beautiful area.”