Zane Gresham advises on transactional and regulatory matters in the development, financing, and purchase and sale of major private facilities and large-scale public works in the United States and internationally. These projects include transportation infrastructure, industrial facilities, corporate R&D and office campuses, and energy and water projects. His work involves areas as diverse as "new town" developments, airport master plans, renewable energy, life sciences, chemical manufacturing, and entertainment.

Mr. Gresham understands the strategic and legal challenges in developing large, and often controversial, projects, as well as methods for resolving those issues constructively. Mr. Gresham's work often involves negotiating public-private collaborations, and reaching understandings with relevant stakeholders, including community groups and environmental organizations.

Mr. Gresham also advises on public-private partnerships for the provision of public services, such as water, and the development of public facilities, such as airports and public transit. He has served as a special legal adviser to national governments and international organizations on evolving issues in energy and transportation, and on the relationship between trade and the environment.

Mr. Gresham has acted as counsel to international conservation organizations in efforts to develop effective means to protect important ecosystems, such as the Three Rivers area of Yunnan, China, and the Komodo National Park in Indonesia. He also has acted as a special legal adviser to the United Nations Environment Programme (UNEP) and the North America Commission on Environmental Cooperation (NACEC).

Mr. Gresham is an associate member of Airports Council International and a full member of the Urban Land Institute and of Lambda Alpha, the international honorary land economics organization. He is Vice Chairman of the National Youth Science Foundation, Director of the Fromm Institute at the University of San Francisco, and a Trustee of Grace Cathedral. Mr. Gresham previously served as President of the Pan American Society of California, Vice President (Latin America) of the International Private Water Association, President of the East Bay Regional Parks Foundation, and as a member of the Board of Directors of the Foundation for San Francisco's Architectural Heritage.

Mr. Gresham has been recommended by Legal 500 US and Best Lawyers in America for land use and zoning law. Legal 500 US notes that Mr. Gresham “has a wealth of experience, and provides highly valuable advice and counsel.” In 2011, the San Francisco Daily Journal recognized him as one of the top 25 land-use attorneys in California.