As your cost seg representative, I will work with you to get your projects done and questions answered. I work all over the U.S. I have a business development team across the U.S. where we help hundreds of owners, investors and tax professionals get these studies completed in time to be applied to their tax returns. While I represent the firm CSSI, LLC, this site is independent of them. CSSI, LLC has been in business for 21 years and has completed 50,000 engineering-based cost segregation studies in all 50 states and on all classes of buildings. We are the leading firm in the industry.