Sean Troxell has worked with investigators at the Montgomery County Office of Consumer Affairs; as well as, Montgomery County police and has provided expert witness services for clients in MD and DC.

Mr. Grewell, in his time, was recognized as an Expert Witness for all aspects of both residential and commercial buildings and gave expert witness testimony in many courtrooms. He worked with numerous civil attorneys in and around the greater metropolitan Washington, D. C. area and was highly regarded for his thorough and fair testimony as well as for his high success rate for his clients.