Isaac Thiel


Office: Fond du Lac, WI

Focus: As Controller, Isaac is responsible for oversight of the accounting team and financial statement reporting for all of The Commonwealth Companies.

Experience: Isaac received his Master’s degree in Accounting from UW-Whitewater and is a Certified Public Accountant (CPA). Prior to joining The Commonwealth Companies, Isaac spent over 4 years with public accounting firm Grant Thornton.  As an Audit Senior Associate, Isaac led teams performing financial statement audits at companies operating throughout Wisconsin and the United States. While gaining a wide variety of experience, his main focus was the construction industry. One of his clients was Faith Technologies, a large electrical contractor, and for the past 3+ years, he worked there as an Accounting Manager. As Accounting Manager, Isaac was responsible for managing the monthly closing cycle and financial statement preparation, along with many other general accounting functions.

Impressive Facts: With both parents coming from large families, Isaac has more than 40 aunts and uncles!

Fun Stuff: Isaac enjoys spending time outdoors with his wife Rachel and their dog Daisy. When he’s not working, you will find Isaac playing and watching sports, hiking at state and national parks, and spending time with friends and family.

Commonwealth is: dynamic. It is an environment that will keep you engaged and provides a lot of opportunities.


Horicon School Apartments Closing – July 2nd

We’re kicking off July with another closing in Wisconsin! Horicon School Apartments is $11.5M development that will provide 40-units of…
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Wednesday vote final step in project to rehabilitate former YMCA building

An appropriation of $500,000 from Terre Haute’s downtown tax increment finance district is the final step needed to convert the…
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Commonwealth was quick to respond to any need, both large and small, throughout the entire building process. It might sound too good to be true, but all we did was tell them what we wanted and they did it. Very simple and no surprises. It is easy to see why Commonwealth is a rapidly growing company.

Brian Lenz, President , Lenz Sales & Service, Inc.