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.
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
- 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
- Judicial Clerk for Honorable Samuel Conti, U.S. District Court for the Northern District of California
Professional Activities and Memberships
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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
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Jon's Insights
Client Alert | 9 min read | 01.06.26
Beyond the Checkout: Retail's 2026 Legal Minefield
2026 will be a significant year for retailers and e-commerce companies, with significant changes on the horizon that will affect the entire industry and ecosystem. Potential headwinds and developments in product safety, pricing, artificial intelligence, data privacy, website compliance, and environmental responsibility are expected. But amidst these changes, there are likely significant opportunities that retail and e-commerce businesses can capitalize on.
Press Coverage | 01.02.26
Client Alert | 7 min read | 12.17.25
Event | 11.04.25
Recognition
- Best Lawyers in America, Environmental Law; Litigation — Environmental; Natural Resources Law; Real Estate Law, 2016–2026
Jon's Insights
Client Alert | 9 min read | 01.06.26
Beyond the Checkout: Retail's 2026 Legal Minefield
2026 will be a significant year for retailers and e-commerce companies, with significant changes on the horizon that will affect the entire industry and ecosystem. Potential headwinds and developments in product safety, pricing, artificial intelligence, data privacy, website compliance, and environmental responsibility are expected. But amidst these changes, there are likely significant opportunities that retail and e-commerce businesses can capitalize on.
Press Coverage | 01.02.26
Client Alert | 7 min read | 12.17.25
Event | 11.04.25
Insights
Oak Park Banned Natural Gas In New Buildings, But A Legal Fight Is Underway
|08.01.25
Chicago Sun-Times
- |
07.09.25
Crowell & Moring’s Retail & Consumer Products Law Observer
Jon's Insights
Client Alert | 9 min read | 01.06.26
Beyond the Checkout: Retail's 2026 Legal Minefield
2026 will be a significant year for retailers and e-commerce companies, with significant changes on the horizon that will affect the entire industry and ecosystem. Potential headwinds and developments in product safety, pricing, artificial intelligence, data privacy, website compliance, and environmental responsibility are expected. But amidst these changes, there are likely significant opportunities that retail and e-commerce businesses can capitalize on.
Press Coverage | 01.02.26
Client Alert | 7 min read | 12.17.25
Event | 11.04.25
