Starwood Hotels & Resorts plans to construct the new Westin Chantilly and the new Element Chantilly in Chantilly, Va.
The two hotels will be an integral part of the future Commonwealth Centre, a 2 million-square-foot mixed-use development.
The Westin will offer groups 211 guest rooms and space for events.
The Element will offer 123 guest rooms and 1,000 square feet of meeting space.
Construction is expected to begin in May 2008 with an opening date set for spring 2009.