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. 

Steve Nimmer

National Account Executive

Georgia

With a Bachelor’s degree in Business, majoring in Accounting with a concentration in Public Accounting, Steve brings 23 years of expertise in the finance industry. Beyond a successful professional career, Steve has been a dedicated leader in the community. Peer-selected to serve on the Board of Officers for the Knights of Columbus council, Steve rose through the chair rankings to become Grand Knight and later served a three-year term as Council Trustee. He also contributes his financial expertise as a member of the St. Peter the Apostle Catholic Church Finance Committee.

A passionate coach, Steve has mentored young athletes through St. Peter the Apostle School football, Little League Baseball, and a travel baseball team. For him, coaching is about more than skill development—it’s about fostering friendships and witnessing the joy and camaraderie that shape a child’s future.

Contact

Get a Free Tax Savings Analysis of Your Property

We’ll deliver a complete assessment of potential savings in as little as two business days.


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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