Jon Welner

Overview

Jon Welner is a partner in Crowell & Moring’s San Francisco office. He brings more than 25 years of experience addressing environmental regulatory challenges and resolving land development disputes for businesses and local governments in California.

Jon’s practice focuses on all areas of environmental law, including the regulation of air, water, hazardous materials and waste, consumer products, traditional and renewable energy, and natural resources. He has significant experience helping clients navigate the California Environmental Quality Act, Proposition 65, and brownfield redevelopment. Jon helps clients obtain land use entitlements, and he has significant experience with coastal development and the permitting of industrial and energy facilities.

Jon represents clients on their most challenging land use disputes. He has represented the City of Redondo Beach over the past decade and serves as its principal outside counsel on land use issues. Jon advises clients at both the state and federal level, and he has appeared before all California environmental regulatory agencies. He regularly performs environmental due diligence on large-scale corporate and real estate transactions.

He has a long track record of public service. He is the elected mayor of Tiburon and has served for seven years on the Town Council. Prior to that, he served for six years on the Tiburon Planning Commission, including as chair and vice chair. In addition, previously, he was a senior official at the California Natural Resources Agency.

Jon’s experience also includes development-related labor issues, including prevailing wage law and project labor agreements. He regularly represents developers and trade associations before the Department of Industrial Relations and has negotiated numerous project labor agreements, including the agreement for Baylands North, one of the largest residential projects in San Francisco.

Career & Education

California Natural Resources Agency
Special Assistant to the Secretary
Town of Tiburon
Mayor, 2021–22 & 2025–Present
Councilmember, 2018–Present
- California Natural Resources Agency
  Special Assistant to the Secretary
- Town of Tiburon
  Mayor, 2021–22 & 2025–Present
  Councilmember, 2018–Present
Stanford Law School, J.D., 1995
Stanford University, B.A., with distinction, Phi Beta Kappa, 1989
- Stanford Law School, J.D., 1995
- Stanford University, B.A., with distinction, Phi Beta Kappa, 1989
California
U.S. District Court for the Northern District of California
U.S. District Court for the Eastern District of California
U.S. District Court for the Central District of California
U.S. District Court for the Southern District of California
U.S. Court of Appeals for the Ninth Circuit
- California
- U.S. District Court for the Northern District of California
- U.S. District Court for the Eastern District of California
- U.S. District Court for the Central District of California
- U.S. District Court for the Southern District of California
- U.S. Court of Appeals for the Ninth Circuit
Judicial Clerk for Honorable Samuel Conti, U.S. District Court for the Northern District of California
- Judicial Clerk for Honorable Samuel Conti, U.S. District Court for the Northern District of California
Professional Activities and Memberships

Mayor and Councilmember, Town of Tiburon

Former Board Member and President, Osher Marin Jewish Community Center

Executive Committee member and former Chair, Environmental Law Section, Bar Association of San Francisco

Advisory Board member, Environmental Law Section, California Lawyers Association (formerly the California State Bar)

Board of Directors, John Gardner Fellowship Association

Advisory Board, Stanford-in-Government
Professional Activities and Memberships
- Mayor and Councilmember, Town of Tiburon
- Former Board Member and President, Osher Marin Jewish Community Center
- Executive Committee member and former Chair, Environmental Law Section, Bar Association of San Francisco
- Advisory Board member, Environmental Law Section, California Lawyers Association (formerly the California State Bar)
- Board of Directors, John Gardner Fellowship Association
- Advisory Board, Stanford-in-Government