Phase I ESA

Phase I Environmental Site Assessment (ESA)

Unlocking Property Potential, Protecting Your Investment

Understanding the Importance of Phase I ESAs

A Phase I Environmental Site Assessment (ESA) is a crucial step in the due diligence process for property transactions and development projects. The purpose of a Phase I ESA is to identify potential environmental risks and liabilities associated with a property. This assessment is typically conducted in accordance with the ASTM International Standard E1527-13.


Think of a Phase I ESA like a health checkup for a property, conducted by our seasoned environmental experts. Whether you’re planning to purchase land or embark on significant changes, such as new construction, this meticulous investigation is a critical step towards informed decision-making.

What is Covered in a Phase I ESA?

Site Inspection

A qualified environmental professional will conduct a thorough on-site inspection to assess current and historical land use, existing structures, and potential sources of contamination.

Historical Records Review

Extensive research is conducted to review historical records, including aerial photographs, fire insurance maps, and government records, to identify past uses of the property that may have contributed to environmental concerns.

Interviews and Documentation

Local agencies, current and past property owners, and occupants are interviewed to gather information about the property’s history and any potential environmental issues.

Report and Findings

The findings of the Phase I ESA are compiled into a comprehensive report. This document includes a detailed assessment of potential environmental risks and recommendations for further action, if necessary.

When is a Phase I ESA Necessary?

A Phase I Environmental Site Assessment (ESA) is deemed necessary in various scenarios within the realms of real estate and property development. Typically conducted during property transactions, commercial real estate acquisitions, and financing processes, a Phase I ESA is essential for due diligence. It provides a comprehensive evaluation of potential environmental risks associated with a property, offering valuable insights that influence decision-making. Additionally,municipalities and regulatory agencies often require a Phase I ESA as part of compliance measures for development projects. Whether you are a property investor, developer, or involved in any real estate transaction, incorporating a Phase I ESA ensures a thorough understanding of environmental conditions, safeguarding both your investment and the environment.