Katherine McGrath

Katherine M. Tsou

Senior Counsel

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San Francisco

Katherine's practice focuses on public agency law. She assists transportation agencies, cities, counties, special districts, joint exercise of powers authorities, and other local agencies with procurements, contracts, the California Public Records Act, the Brown Act, and government ethics, among other areas of law. 

Katherine assists public agencies with all aspects of the public procurement process, including reviewing solicitations, advising on state and federal procurement requirements, handling public contract protests, responding to requests for procurement records, and advising on procurement matters related to federal Disadvantaged Business Enterprise (DBE) and Small Business Enterprise (SBE) regulations. She has worked on a wide range of procurements for services and goods, including federally assisted procurements, complex procurements with multiple phases, and procurements related to maintaining and purchasing public transit vehicles. Katherine also drafts and reviews procurement policies, procedures, and templates, and provides trainings on procurement best practices. 

Katherine advises public agencies on matters related to public meetings, requests for public records, agency policies and procedures, and conflicts of interest. She drafts and reviews ordinances, policies, resolutions, governance documents, staff reports, cooperative agreements between agencies, and funding agreements between public and private entities. Katherine provides trainings to public agency officials and employees on ethics laws concerning financial interests, government transparency, and fair processes.

After graduating from law school, Katherine served as a CROWN (Climate, Renewable Energy, Open Space, Water and Natural Resources) Attorney Fellow at the Sonoma County Counsel's Office where she advised county departments on matters related to public finance, code enforcement, land use, and public works. Prior to joining Hanson Bridgett, she also served as Deputy Town Attorney for the Town of Corte Madera and interned at the San Francisco City Attorney's Office.


"A Q&A with ferry attorneys Katherine M. Tsou and Steven D. Miller of Hanson Bridgett," Marinelog (November 2022)

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"Understanding Public Service Ethics Laws and Principles (AB 1234)," California State Association of Counties Annual Meeting (November 2020)

"Virtual Board Meetings During COVID-19: Legal Requirements, Planning the Meeting and Practical Guidance," Municipal Management Association of Northern California Webinar (June 2020)

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California Lawyers Association, Wiley W. Manuel Pro Bono Legal Services Award (2020)

Professional Affiliations

Municipal Management Association of the Northern California, Annual Conference Planning Committee Member (2020)

Academic Distinction

UC Davis Law Review, Senior Notes and Comments Editor

UC Davis School of Law, Pro Bono Program Certificate

Witkin Award for Academic Excellence: Legal Research and Writing I and II, Public Finance, and Education Policy


J.D., University of California, Davis School of Law (2016)

B.A., summa cum laude, Loyola Marymount University (2013)

Admissions And Courts


San Francisco

415-995-5120 Direct Phone
415-995-3425 Fax

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