Partner ESI

Partner Engineering and Science, Inc. (Partner ESI) stands as the leading provider of engineering, environmental, construction, energy, and valuation consulting for the commercial real estate industry. Founded in 2007 and headquartered in Torrance, California, the company has grown into a formidable presence with over 1,600 professionals operating from more than 40 offices across North America, Europe, and beyond.

The firm's comprehensive service portfolio encompasses building assessments and engineering, environmental consulting including Phase I and II site assessments, construction risk management, energy and sustainability solutions with ESG consulting, geotechnical services, land surveying and zoning, site civil engineering, and valuation and appraisal services. Partner ESI serves a diverse clientele including lenders, investors, developers, and property owners who require thorough due diligence before real estate transactions.

Partner ESI has earned recognition on ENR's Top 500 Design Firms, Inc. 5000's Fastest-Growing Companies, and Zweig's Best Firms to Work For. The company operates as a family of operating companies providing streamlined, cohesive client experiences across multiple operating brands. Their commitment to ESG principles and sustainability is evident through dedicated services in green building certifications, decarbonization pathways, and climate hazard resilience.