Professional Staffing


“A company of exceptionally talented professionals providing services to clients that demand the very best in a timely manner”

Management Team


Shawnee Professional ServicesMitch Garrett, PLS, CEO

Mitch has nearly 40 years of experience in land surveying, including boundary, construction staking, subdivisions, topographic surveys, utility mapping, ALTA surveys, and more. He currently oversees the firm and facilitates business development.

Mitch is also the current president of the Illinois Professional Land Surveyors Association, which works to promote high standards of practice and conduct and support professional land surveyors through continuing education, professional association, and the use of current technology. He is involved in various community organizations and efforts, and he and his wife Bonita are enjoying being newly minted grandparents with their grandchildren Peter Alexander and Aislin Ann.

Shawnee Professional ServicesBilly Abernathy, PLS, PE, President

Billy has 18 years of experience in all aspects of land surveying and civil engineering with federal, state, county, city & private clientele. His broad project experience is inclusive of ALTA surveys, boundary surveys, construction staking, topographic surveys, subdivision development, drainage design, water and wastewater design, cost estimating, permitting, and floodplain studies. Billy also has experience managing right-of-way acquisition along day-to-day operations of the firm and overseeing all personnel. 

Outside the office, Billy serves as an elder at his church, is a board member for the local youth football league, and helps coach his son's youth football and baseball teams. He enjoys spending time with his wife, Amy and children, Logan and Blake.

Shawnee Professional ServicesPatrick Presser, CPA, CFO

Patrick is a certified public accountant with over 14 years of experience. He is responsible for providing administrative oversight for planning and directing the business operations, human resources and risk management functions, and information technology. Patrick is very active in his church community, serving in many leadership positions. He enjoys spending time with his wife, Melissa and children, Riley and Ethan.



“Very professional, on time, seemed to be efficient, knowledgeable, listened to my thoughts on property survey expectations!! Well Satisfied!”

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