Our cities. Our homes. Our lives. 

Headquartered in Marin County, Ostertag Law Offices fosters life-long relationships with our clients based upon exemplary legal services. Accordingly, our practice revolves around one thing—our clients—and providing them with precision, passion, and perspective in representation. 

Ostertag Law Offices' practice areas include tenants' rights, eviction defense, affirmative lawsuits on behalf of tenants, personal injury, and general civil litigation.



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 J.D., Tulane University Law School (2012)
 B.A., University of California, Berkeley (2006)

Bar Admissions
 State Bar of California (State Bar Number 289328)

Court Admissions
 U.S. District Court for the Northern District of California                      U.S. Court of Appeals for the Ninth Circuit 

 Wiley W. Manuel Award for Pro Bono Legal Services: 2013, 2014,  and 2015

Charles's practice areas include tenants' rights, eviction defense, affirmative lawsuits on behalf of tenants, personal injury, and general civil litigation. Charles also engages in numerous pro bono activities and cases throughout the Bay Area.

Born and raised in the San Francisco Bay Area, Charles graduated magna cum laude from U.C. Berkeley with B.A.s in English Literature and Rhetoric. At U.C. Berkeley, he received the Cal Bears Scholarship (full tuition) and the H.W. Hill Scholarship (a faculty-selected award for work in the English Department of exceptionally high caliber). Upon graduation, Charles was elected to the Phi Beta Kappa Honor Society.

Charles received his J.D. from Tulane University Law School in New Orleans, Louisiana. During law school, Charles interned for Orleans Public Defenders in New Orleans, Louisiana; served as a certified student attorney at the Office of the Federal Public Defender in the Eastern District of California in Sacramento, California; externed in his third year of law school for the Honorable Helen G. Berrigan in the U.S. District Court for the Eastern District of Louisiana in New Orleans, Louisiana; studied Chinese law at Tsinghua University in Beijing and Fudan University in Shanghai; and served as managing editor for, and published in, the Tulane Journal of International and Comparative Law

After graduating law school in 2012, Charles returned home to the Bay Area and worked for an international grantmaking nonprofit organization in San Francisco. There, he advised staff on the U.S. Foreign Corrupt Practices Act and educated corporate clients on the charity laws of India, China, and Hong Kong. Afterwards, Charles founded Ostertag Law Offices in 2014.  

Public interest

The San Francisco Bay Area is one of the most beautiful places to live in the world, and is home to some of the most affluent and wealthy communities on the globe. Despite these attributes, the Bay Area contains an immense amount of poverty, discrimination, homelessness, and individuals and families who simply cannot make ends meet.

With these disparities in mind, Ostertag Law Offices is committed to ensuring access to justice and providing free legal services to disadvantaged and low-income individuals in the communities where we work, live, and beyond. Our pro bono activities include taking on cases for free and volunteering our time at nonprofit community and legal aid organizations such as Legal Aid of Marin and East Bay Community Law Center.

We feel this is our professional responsibility as lawyers and our social duty as members of a community. In addition, engaging in pro bono activities provides us with personal enrichment, professional development, and makes a positive difference in the lives of the people we reach. 

If you need legal representation and cannot afford it, regardless of your citizenship status, please contact us. In the least, Ostertag Law Offices can provide you with free short-term legal advice and connect you with the appropriate legal aid organization that can assist you with your case. 



Marin County Office

Ostertag Law Offices
802 B Street
San Rafael, California 94901

Office: 415-938-7823
Fax: 415-873-3197




Contact Us

Ostertag Law Offices invites you to contact us about your legal needs. Initial consultations are free. During that time, we will explain the options, expectations, strengths, and weaknesses of your potential case. 

If you prefer to prompt us with a little information about yourself and your legal issue, please use this form. (Your contact information is not shared with anyone outside Ostertag Law Offices.)

We will respond to your inquiry within 24 hours of the next business day. 

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