Dillon CPAs, PLLC is excited to announce the addition of Tom Petrosewicz and his staff to the Dillon CPAs team! This addition will strengthen our dynamic team of trusted advisors, who provide excellent, reliable, and responsive accounting, tax, and financial services. Tom Petrosewicz is the founder and owner of Petrosewicz & Company, Inc., a full-service CPA firm located in Richmond, TX on FM 359 near Pecan Grove that celebrated its 20th anniversary this year. At Dillon CPAs, Tom will focus on tax planning for individuals, consulting for closely-held businesses, staff enrichment, and client development.

Tom and his wife, Norma, have called Fort Bend county their home for 25 years. Their daughter, Danielle, attends the University of Texas in Austin and their son, T.J., attends the University of the Incarnate Word in San Antonio. Norma is a CPA and attorney that is Board Certified in Estate Planning and Probate Law. Norma’s law office focuses on trust and estate planning for business owners, individuals, and families, and also handles probate and trust administration matters.

Marcus Dillon, the founder and owner of Dillon CPAs is very excited about the addition of Tom and his staff. Marcus worked at Petrosewicz & Company while attending his first year of college, and they have remained friends for the past 15 years. “Tom has been a mentor to me throughout my career, and I am excited to have his knowledge and leadership now be a part of Dillon CPAs. I think we are a better firm together, and I believe our clients and employees will benefit from the addition of Tom and his team,” added Marcus. Dillon CPAs will initially maintain Petrosewicz’s Richmond office in addition to our Katy office and satellite office in Bellville. 

Dillon CPAs now boasts a total of four CPAs and eight additional team members to work closely with our clients ensuring they have the expert guidance they need to achieve their goals.  Please go to to find out more about our team and the high-quality accounting, tax, and financial services that we provide. 

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