Leigh A. Gilligan


265 Franklin St.
Boston, MA 02110

Ms. Gilligan is a partner in the firm's Environment & Energy Practice Group. She has extensive experience in many aspects of environmental and land use law including licensing and permitting, compliance counseling, and representation in connection with business and lending transactions, as well as real estate development.

Ms. Gilligan represents parties involved in federal and state hazardous waste sites including legal proceedings, private cost recovery actions and dealings with governmental agencies. She regularly represents lenders in the evaluation, management and resolution of environmental issues. She also has extensive experience in environmental issues involved in transactions for the purchase and sale of land and businesses, including confirming and securing liability protections and economic incentives in connection with Brownfields redevelopment. Her representation also includes preparation of environmental opinions in connection with loans and bond issuances; compliance counseling to businesses of all sizes; representation of parties in environmentally-related state and local administrative and enforcement proceedings (including wetlands, tidelands and Massachusetts Environmental Policy Act review and facility site assignments); and working with site owners and developers in the management of environmental issues and permitting in the context of development. Ms. Gilligan is a frequent author and lecturer on environmentally related topics. She has in the past been an Instructor/Guest Lecturer at MIT's Center for Real Estate.

The "very helpful and responsive" Leigh Gilligan has a solid and broad-ranging environment and land use practice and she leads the team's Boston offering. Ms. Gilligan is recognized in Massachusetts Super Lawyers for 2004-2018, and is listed in Chambers USA from 2010-2019. Her broad practice includes the representation of clients in compliance, licensing and permitting matters. Chambers is published by Chambers and Partners. Super Lawyers is published by Thomson Reuters. A description of their selection process can be found in the respective links above. No aspect of this advertisement has been approved by the Supreme Court of New Jersey.


  • J.D., George Washington University Law School, 1990 (formerly George Washington University, The National Law Center)
  • B.A., University of Vermont, 1987

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