Thomas G. Zimmerman

Chief Operating Officer
Mr. Zimmerman has over 40 years of experience in the mass appraisal field. This includes the appraisal of all types of real property and management of many countywide revaluation projects in Ohio, Missouri, Connecticut and Pennsylvania.

Tom has appeared as an expert witness at the Ohio Board of Tax Appeals and numerous Boards of Review in Ohio.

Work History

Tom has worked in the development and implementation of multiple CAMA systems during revaluation programs. Significant appraisal assignments include the overall management of appraisal projects in Crawford, Delaware, Lawrence, Miami, Morrow, Muskingum, and Scioto Counties Ohio and residential management of Franklin County Ohio. He has provided management oversight and guidance for the appraisal of over 2 million parcels of property in the State of Ohio.

Significant accomplishments include the integration of multi-faceted technology into the mass appraisal process. Tom has worked to integrate geographic information systems (GIS), aerial photography, street level photography, oblique photography, and CAMA system information into a single process to enhance the appraisal process.


B. S. Business Administration, Major- Real Estate Urban Land Economics, The Ohio State University, Columbus, Ohio

International Association of Assessment Officers Course 1 Completion

Professional Certifications
Ohio Certified Mass Appraisal Project Manager
Indiana Certified Assessor Levels I & II (Inactive)
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