Joan Cassman

Joan L. Cassman


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Public Agency
Public Agency
San Francisco
Named one of the "Top 25 Municipal Lawyers of California" by the Daily Journal in December of 2011, Joan has practiced in the field of municipal law for 45 years with Hanson Bridgett.

Joan is the General Counsel for the San Mateo County Transit District,  and the San Mateo County Transportation Authority. These agencies provide public transportation services and infrastructure funding and support for transportation projects on the Bay Area Peninsula, including projects to electrify the Caltrain right of way from San Francisco to San Jose, to establish grade separations in San Mateo County, to improve the highway system, to implement an express lane system along Highway 101, and to ensure enhancements, accessibility, sustainability and relevancy for all modes of transportation.

Since 1989, Joan has served as the City Attorney for the City of Millbrae. In addition, Joan is General Counsel for the Peninsula Traffic Congestion Relief Alliance, a transportation demand management joint powers authority of 17 cities and the County of San Mateo. Throughout her career, Joan has also served a number of cities and public agencies as special counsel, including the cities of Gilroy, Windsor, San Carlos, Costa Mesa, Brentwood, San Luis Obispo, Berkeley, and the County of San Mateo, as well as the San Mateo County Mosquito Abatement District and the Woodridge School District. For years, she served as one of the Evaluators for the City of San Jose Elections Commission and in that role recommended disposition of complaints alleging ethical violations under the San Jose Municipal Code.

Joan understands the art of serving a client as General Counsel and she understands how local government agencies function. She is often called upon to provide guidance as special counsel when crises occur, such as employee embezzlements or the misconduct of public officials serving an agency. Joan has expertise in a wide spectrum of issues including election law, federal funding requirements, environmental and real property matters, railroad operations, purchase of service and franchise agreements, public works projects, municipal finance, and government reorganization matters. She has represented both public and private entities in government proceedings involving all aspects of development, contracts, procurement, and bid protests.

Joan serves on the Board of Trustees of UC Hastings Law School. She was a founding member of the San Mateo Foster City Education Foundation and she has served on the Board of Trustees of Samaritan House which provides medical services, shelter, food and clothing. assistance to those in need in San Mateo County, and on the Board of Trustees of the Unitarian Universalists of San Mateo.

Representative Work

San Mateo County Transit District. Oversees and manages the legal services required to support this transportation mobility manager agency in San Mateo County which also serves as the Managing Agency for the Caltrain and the San Mateo County Transportation Authority, including the development of contractual arrangements for shared serves, and the implementation of major improvement projects such as the zero emission infrastructure and vehicles program, with the attendant real property acquisition, procurement, and federal and state funding issues.

City of Millbrae. As the City Attorney since 1989, she oversees all legal work for the City, including advice on developments, the drafting of legislation, the provision of municipal services including sewer and water, and the implementation of infrastructure projects, such as the multi-million dollar Millbrae Avenue Railroad Overpass Project which involved real property acquisition and eminent domain. Provides the general counsel services to assist this organization with establishing and offering creative demand management transportation services.

City of Gilroy. Provided special counsel services to the City in addressing an appropriate response and consequences of a tragic incident involving a city official.


"New Brown Act Reporting Requirements," Municipal & Public Agency Law Alert (March 2014)

"Declaring a State of Emergency: What You Need to Know," Government Law Alert (May 2011)

See All Publications


"Legal Counsel's Role in Hiring a GM," American Public Transportation Association's Legal Affairs Conference (February 2016)

"Local Government in a Brave New World: Law Enforcement, Code Enforcement, and Public Agency Liability," Municipal Law Institute Symposium (February 2015)

“Brown Act Compliance – Traps for the Unwary,” Markkula Center for Applied Ethics at Santa Clara University (October 2014)

"We Had No Idea We Were Being Ripped Off! What Every Manager Needs To Know About Internal Controls and Fraud," Municipal Management Association of Northern California Region 1 Event (June 2014)

"A New Look at Design Immunity: Expanding Protections for Public Entities," International Municipal Lawyers Association Conference (October 2013)

"Municipal Restructuring: Discussion & Dialogue with Key Players," Turnaround Management Association Northern California (June 2013)

"Selecting an Operator for Caltrain: The Procurement Experience and Lessons Learned," American Public Transportation Association's Legal Affairs Conference (February 2012)

"Legal Authority of Cities to Outsource and Share Services," Hanson Bridgett Municipal Law Institute (February 2012)

"Outsourcing and Shared Services," Hanson Bridgett Public Policy Forum (January 2012)

"Navigating the Labor Laws in a Time of Scarcity: RIF, Furloughs and Other Cutbacks," Hanson Bridgett Seminar (April 2011)

"November Ballot Propositions," San Mateo County Council of Cities Meeting (August 2010)

"Contractual Risk Transfer," (August 2010)

"The Investigatory and Reporting Authority of Civil Grand Juries Acting in Their 'Watch Dog' Capacity," (June 2010)

"Controlling Public Employment Costs in Challenging Times," Hanson Bridgett Workshop on Public Employee Benefits (May 2010)

"Keeping it Legal: The What's, Why's and How's of a Utility Rate and Connection Fee Ordinance," Bay Area City Attorneys Association (March 2010)

"From Grease to Energy – The Legal Challenges with the Millbrae Co-Generation Facility," Bay Area City Attorneys Association (July 2008)

"The Governor's Commission and OPEB Strategies," Other Post-Employment Benefits (OPEB) Workshop (March 2008)

"Arranged Marriage: Water Supply and Land Use Planning," Contra Costa County City Attorneys Association (August 2007)

"The Creep of Casual Corruption," (March 2006)

"Joint Powers Authorities: Opportunities and Challenges," League of California Cities (September 2003)

See All Presentations


Daily Journal, Top 25 Municipal Lawyers of California (2011)

Professional Affiliations

Bar Association of San Francisco, Member

Bay Area City Attorneys Association, former President

San Mateo County Bar Association, Government and Municipal Law Section, Member

Senator Dianne Feinstein's Judicial Advisory Committee for Northern California, Member

California Women Lawyers, Member

Queen's Bench Bar Association, Member


J.D., University of California, Hastings College of the Law (1977)

B.A., Williams College and Wellesley College (1974)

Admissions And Courts


San Francisco

415-995-5021 Direct Phone
415-995-3414 Fax

Email Attorney


Firm Leadership

Government Ethics Practice Leader