
For the fifth straight year, Partner continues to climb the ENR Top 500 Design Firms list. This year, we are proud to announce that we jumped 52 places up the list, cracking the top 200 and happily occupying spot #192. In commercial real estate due diligence, Partner is a trusted name for Phase I Environmental Site Assessments and related services.
This news comes as the market for construction design services is poised for a takeoff, with major design firms preparing for the Trump administration’s funding and tax proposals to translate into new development.
So far, 2017 has proven to be an optimistic year in terms of market health, with many of the firms on this list citing early indications that clients, particularly on the private-sector side, think the new administration will cut taxes and regulations, and encourage new capital investments.
“Commercial real estate private-equity firms are seeing all-time highs in fund-raising. Generally, these funds are creating investments that will drive work for engineers,” says Joseph P. Derhake, CEO of Partner Engineering and Science Inc.
More on the full list can be found here.

July 02, 2026
Adrienne Perez, an Environmental Due Diligence Consultant, joins as Technical Director for Agency Services in Partner Engineering and Science's environmental service line.

June 23, 2026
For commercial real estate owners, developers, and investors, the program offers a more flexible and efficient path to address contamination, particularly at lower-priority sites enrolled in voluntary cleanup.

June 24, 2026
Amid evolving and often uncertain federal regulations, state environmental agencies have increasingly taken the lead in developing policies to address PFAS.




