Our Services
A Platform Designed to Unlock Savings
Over 45,000 Studies Completed Since 2003

Engineering-Based Expertise
45,000+ studies since 2003, expertly navigating complex tax regulations.

Multiple Tax Solutions
Our expertise spans cost segregation, 179D energy efficiency deduction, R&D credits, and sustainable building technologies to maximize your tax savings.

National Coverage
Our nationwide network of professionals provides local expertise while delivering consistent, high-quality results across all 50 states.

Tax Professional Partnerships
We collaborate with CPAs and tax advisors to ensure timely, compliant, and maximum tax benefits for their clients.
CSSI is America's leading provider of engineering-based tax solutions. We partner with property owners and their tax professionals to maximize tax benefits and increase cash flow through accurate, compliant studies. Our proven methodology has never triggered an IRS audit, and our nationwide team of experts consistently delivers results that transform complex tax regulations into tangible financial benefits for our clients.


Jonathan Warner
Jonathan is a seasoned professional with 20 years of experience in Georgia’s economic development community, where he has delivered tax incentives and leadership consulting to businesses statewide. He holds a M.Ed. in Human Resources and Organization Development from the University of Georgia and is a certified economic developer trainer for the State of Georgia. An honorably discharged U.S. Navy veteran, Jonathan enjoys SCUBA diving, music, and travel in his free time.
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Learn more about what CSSI can do for you.
We're committed to helping you take full advantage of cost segregation, 179D, and GreenZip technology.
Learn More About What CSSI Can Do for You
We’re committed to helping you take full advantage of Cost Segregation, 179D, R&D Tax Credits, and Green Zip technology.
Learn More