Putting the right projects in the right places

Meet the Team

Land Use, Real Estate and Energy Attorneys



Corie Calfee, Attorney

Corie Calfee | Opterra Law | Berkely, California

Corie specializes in land use, real estate, and environmental review. She counsels clients through the entitlement process and facilitates related transactions. She advises on environmental and land use aspects of real estate transactions. She has particular experience advising on the development of multi-family residential developments, utility infrastructure, public-private partnerships, and renewable energy projects.  She represents individual and institutional developers, utilities, public agencies, small businesses, and community groups.

Corie also helps her clients comply with local, state and federal laws, including environmental regulations and rent control.

She earned her J.D., with a certificate in environmental law, at U.C. Berkeley, Boalt Hall.  She also earned a Master’s degree in Public Policy from the Goldman School at U.C. Berkeley. She graduated magna cum laude from Harvard University with an A. B. in history and women’s studies.


Corie has been recognized every year from 2013-2017 as a Rising Star for Land Use/Zoning and Environmental Law by Super Lawyers (Northern California).

Professional Activities

  • Real Property Law Journal (Editorial Board and Issue Editor)

  • SPUR (Member)

  • Association of Environmental Professionals (Member)

  • Alameda County Bar Association Community Legal Assistance Saturday Program (Volunteer)

  • Berkeley Rent Stabilization Board (Past member)

  • Berkeley Housing Advisory Commission (Past member)


  • “Permission to Transition: Zoning and the Transition Movement,” Planning & Environmental Law (April 2012) with E. Weissman

  • “Measuring Land Use Regulation in the Bay Area: Report to the MacArthur Foundation,” IBER & Fisher Center for Real Estate and Urban Economics (August 2007) with P. Monkkonen, J. Quigley, S. Raphael, L. Rosenthal, J. Wright

  • “Kelo v. City of New London: The More Things Stay the Same, the More They Change” Ecology Law Quarterly (2006)

  • “The National Flood Insurance Program Mandatory Purchase Requirement: Policies, Processes and Stakeholders” (March 2005) with R. Tobin



Cory Mason, Attorney

Cory specializes in regulatory energy law with an emphasis on energy supply, procurement and cost recovery.  She also counsels clients on issues related to housing, CEQA, and entitlements.

Cory has served as an attorney at Pacific Gas and Electric Company and represented the utility in proceedings before the California Public Utilities Commission (CPUC).  Her practice focuses on the Renewables Portfolio Standard (RPS) program, including issues related to RPS compliance, policy, planning and procurement. This work involves drafting advice letters, collaborating on procurement plans and compliance filings, tracking legislative changes, commenting on CPUC and party filings, and working on utility-owned generation applications and proceedings.

Cory’s prior experience as a technical recruiter built on her ability to connect easily and quickly with others, ask thoughtful questions, and listen carefully with empathy.  Her practice leverages these skills with her innate curiosity and careful attention to detail to deliver strong results for her clients. By understanding her clients’ goals and priorities, Cory provides strategic advice and strong representation.

Cory earned her J.D., magna cum laude, from U.C. Hastings College of the Law and her B.S. in Industrial and Labor Relations from Cornell University.


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