You should always read the bio and resume of the person signing your Cost Segregation study. Make sure they are certified by the American Society of Cost Segregation Professionals (ASCSP). The designation for Certified Cost Segregation professional is CCSP and comes after the engineer’s name. Any designation less than that is substandard. Just like you would only use a CPA to file your tax return, you should only use a CCSP to conduct your Cost Segregation study.