Partner Engineering and Science, Inc. is proud to be featured on the 2020 Engineering News-Record Top 500 Design Firms list! This is Partner’s eighth year included on this competitive list. We’re proud to say that each year we’ve been listed higher than the year prior. In 2020, Partner has moved up nine spots to #140 out of the top 500 Design Firms listed.
“We are honored to be recognized once again on this prestigious list,” says Partner CEO Joseph P. Derhake, PE. “Our success in 2019 was due in part to the commercial real estate bull market. In 2020, we are working to adjust our business to the new COVID paradigm and help our commercial real estate clients adjust to strains and opportunities.”
ENR’s data indicates that design firms anticipated high hopes that 2020 would provide the tenth year in a row of market growth. However, the emergence of COVID-19 pandemic in late February devasted many scrambling to cope with the disaster.
Looking back on 2019, revenue earned from ENR’s Top 500 as a group reached a record total of $103.24 billion – up 2.1% from $101.16 billion in 2018. Domestic market growth was also up 8.9% to $86.60 billion in 2019 from $80.55 billion in 2018. Projects outside the U.S. fell 20.2% to $16.44 billion.
To see the complete list of Top 500 design firms and COVID-19 projections, click here.

June 22, 2026
Partner has named Frederick Ellington, AIA, LEED AP, as Technical Director in its Construction Services division. With 30+ years of experience, he strengthens the firm's construction risk management, due diligence, and project advisory capabilities for commercial real estate clients.

May 27, 2026
Capital planning in commercial real estate has entered a new phase. In addition to traditional lifecycle replacements, managers now face a growing set of capital needs driven by energy ordinances, decarbonization goals, and climate risk. These drivers are no longer peripheral considerations; they are central to how capital plans are developed, prioritized, and executed.

June 05, 2026
Partner Property Consultants, the European subsidiary of Partner Engineering & Science, Inc. (Partner ESI), announces that Antoine Yeprem joined the company in June 2026 as Senior Consultant, Real Estate Due Diligence, in Germany.




