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. 

David Smith

National Account Executive

North Carolina

With a Bachelor’s double major in Chemistry and Mathematics and a Master’s in Biomedical Engineering, David has made significant contributions to various fields, including a blood pressure monitoring device later utilized by NASA. As a consultant to the US EPA, he played a crucial role in data collection for the Clean Air Act, while also developing innovative devices for dental research and creating systems for air pollutant emissions monitoring. Currently at CSSI, he focuses on helping commercial building owners optimize their financial resources, and he has a passion for community service, having led a collection center for Operation Christmas Child for twelve years.

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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