When there’s a change that affects around 250,000 commercial real estate deals a year, it’s a big deal. This is about to happen in 2021. I’m talking about the Phase I Environmental Site Assessment (ESA) – the nationally recognized standard for evaluating environmental risk at a commercial property during acquisition or financing.
Every so often, the ASTM E1527 standard for doing a Phase I Environmental Site Assessment is renewed – the current version is ASTM E1527-13 and, once finalized, the new standard will be ASTM E1527-21. Generally, the ASTM community looks to this renewal process to make the standard better – either to safeguard quality or consistency in how Phase I ESAs are done, or to correct unintended consequences of prior revisions.
Given the potential impacts to so many transactions, clients have been asking me what they can expect in the new standard. I’ve been involved with the ASTM Committee throughout the revision process, so while none of the changes are final, I can offer a glimpse into how some of the bigger potential changes are shaping up.
To read more about these changes, click here.

April 27, 2026
In this article from Propmodo.com, Jerry Ostrander discusses a number of important factors to consider to help prevent environmental contamination concerns from becoming impenetrable roadblocks to development projects. Environmental challenges are a reality in many development projects.

April 23, 2026
An integrated, enterprise-level environmental strategy unifies environmental due diligence, remediation, environmental, health and safety (EHS), and compliance, energy and sustainability, and real estate support under one coordinated framework supported by building sciences expertise.

March 24, 2026
As PFAS continue to reshape the construction risk landscape, lenders that proactively integrate PFAS considerations into underwriting, due diligence, and loan structuring are better positioned to manage uncertainty and protect collateral value.





