Aviva USA, the U.S. unit of Aviva PLC, London, says it has agreed to acquire 71 acres of undeveloped land in West Des Moines, Iowa for a new headquarters.

Aviva USA, currently in Des Moines, hopes to complete the project by early 2010. The 71-acre parcel is located at Jordan Creek Parkway and Mills Civic Parkway in West Des Moines.

The company says it expects to invest between $135 million and $150 million to develop the 360,000-square-foot corporate campus, said Thomas C. Godlasky, chief executive of Aviva North America.

“In the past seven months, we have added approximately 200 jobs, and we expect to add at least 400 more high-quality jobs here in the Greater Des Moines area over the next 3 years if state and local approvals are received,” said Godlasky.