The potential liability and impact on property value due to vapor intrusion into a property’s structures has been of increasing concern to developers, lenders and other parties involved in commercial real estate transactions. Recent changes in ASTM International’s ASTM E1527 standard regarding site investigations, and in the U.S. Environmental Protection Agency’s All Appropriate Inquiry requirements, have now greatly increased the likelihood that vapor intrusion risk will be explicitly addressed by consultants in Phase I Environmental Site Assessments. The prior ASTM E1527-05 standard for Phase I ESAs has now been revised by issuance of ASTM E1527-13, “Standard Practice For Environmental Site Assessment: Phase I Environmental Site Process.” By revising the definition of migration and by other changes, the standard clarifies that vapor intrusion is to be considered in Phase I ESAs.
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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.




