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Guiding You Toward A Better Future

Lydia E. Hsu

Partner | Certified Family Law Specialist*

As certified by the State Bar of California Board of Legal Specialization.

Lydia E. Hsu is dedicated to guiding clients through complex and sensitive family law matters with expertise, empathy and unwavering commitment. As a Certified Family Law Specialist (certified by the State Bar of California Board of Legal Specialization) and Fellow of the American Academy of Matrimonial Lawyers (AAML), Lydia has helped a diverse array of clients – from business owners and physicians to parents and grandparents – navigate complex family law matters with clarity and confidence.

Whether she’s helping a parent secure a fair custody arrangement or negotiating a high-stakes property division, Lydia is known for her practical advice, creative problem-solving, and fierce advocacy. She believes every client should understand their options and feel empowered at every step, whether resolving matters through mediation, alternative dispute resolution or litigation. Her practice encompasses all aspects of family law, including child custody and visitation, child and spousal support, property identification, characterization, valuation and division, reimbursement claims, pre-nuptial and post-nuptial agreements, and domestic violence matters. She also represents clients in guardianship proceedings and step-parent adoptions.

Since 2009, Lydia’s dedication has extended beyond her clients: she volunteers as a Family Court settlement officer in Santa Clara County and has worked with nonprofits supporting survivors of domestic violence. Her peers have recognized her commitment to excellence with inclusion on the Northern California Super Lawyers Rising Stars list every year since 2018.

Areas of Practice

  • Family Law
  • Mediation
  • Divorce
  • Child Custody and Visitation
  • Support
  • Property Division
  • Domestic Violence
  • Prenuptial/Postnuptial Agreements
  • Guardianships
  • Step-Parent and Second Parent Adoption

Bar Admissions

  • California

Education

  • University of San Francisco School of Law, San Francisco, California
    • J.D.
  • University of California, San Diego, California
    • B.A.

Honors and Awards

  • Northern California Super Lawyers Rising Star – 2018-2025
  • Top Attorneys Northern California’s Outstanding Young Lawyers
  • American institute of Family Law Attorneys Top 10 Best in Client Satisfaction
  • Top Attorneys Northern California Rising Stars

Professional Associations and Memberships

  • American Academy of Matrimonial Lawyers, Fellow
  • Asian Pacific American Bar Association, Silicon Valley, Women in Law Committee member
  • University of San Francisco Public Interest Law Foundation, Advisory Board member
  • Asian American Bar Association of the Greater Bay Area
  • Chinese American Lawyers of the Bay Area
  • Santa Clara County Bar Association
  • California Bar Association

Languages

  • Mandarin Chinese
  • English (Primary)

State Bar of California

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Best Of Bay Area Parent 2024
Best Of The Best 2023
Family Law Top 10 - 2023
Super Lawyers Kara N. Foster - 2022
Super Lawyers Lydia E. Hsu - 2022
Top Attorneys Nothern Califonias Young Laywers
10 Best Attorney
Top Attorneys Rising Stars
Top Women Attorneys 2019
10 Best Under 40
Bay Areas Parent Family Favorite 2021
Bay Area Parent Family Favorite - 2022
Super Lawyers 2023
Rising Stars
Our Experienced Family Law Attorneys
Lydia E. Hsu
Partner

Lydia E. Hsu is dedicated to guiding clients through complex and sensitive family law matters with expertise, empathy and unwavering commitment. As a Certified Family Law Specialist (certified by the State Bar of California Board of Legal Specialization) and Fellow of the American Academy of Matrimonial Lawyers (AAML), Lydia has helped a diverse array of clients - from business owners and physicians to...

Kara N. Foster
Partner

Kara represents individuals in all aspects of family law, including divorce, property division, child and spousal support issues, child custody and visitation, attorney fees and costs, as well as domestic violence restraining orders, prenuptial and post-nuptial agreements. Kara’s clientele incorporates a broad range between C-level executives, business owners, engineers, start-up employees, other...

What Our Clients Are Saying
5 Stars

I cannot say thank you enough to Lydia and Lillian for their help! The turnaround time for everything was quick and it was GREATLY appreciated. They were able to help me compile documents needed before I got married and they were...

- Margarita L.
5 Stars

Lydia & Kara have repeatedly provided outstanding service and insight to our office's clients. Their willingness to provide clear and unbiased feedback beginning with the very first conversation allows everyone to improve their...

- Nicolay W.
5 Stars

As you can imagine, referrals are paramount to success in my profession. With that in mind, I am confident in referring Divorce, and Family Law Attorneys Lydia Hsu and Kara Foster with the Foster Hsu Law Firm to my clients and...

- Mario R.
5 Stars

I would recommend Kara to my female friends who are seeking a legal consultant for family law. I signed a prenup when I married my ex. I also signed the waiver based on my trust in him and I didn't even understand the law and what...

- Jessica C.
5 Stars

Lydia and her team were very helpful and professional in helping to write up my prenup. They had clear communication, detailed instructions on what I needed to do/provide, and quick response. I would highly recommend them to...

- Michael G.
5 Stars

I am so thankful to Lydia and her team for all of their hard work!! She is extremely detail oriented and she is so on top of everything. She is truly an expert in her field! I was facing a serious time crunch when I reached out...

- Priscilla G.
5 Stars

Lydia is wonderful to work with. She walked me through what was happening every step of the way and ensured I understood. I appreciated how easy she was to talk to, her compassionate demeanor, and how knowledgeable she is. I would...

- Brittany
5 Stars

I was recommended to Foster Hsu after spending months with another law firm attempting mediation for my divorce. I'm very glad I called them. I'm very happy with the very personal level of care and consideration my case was given....

- Nicole
5 Stars

I was going through a painful and confusing divorce and had several prior attorneys who I did not feel understood my situation. Once I met with Lydia, I knew I found the right attorney for me. Lydia provided knowledge and...

- Anonymous
5 Stars

Kara was absolutely wonderful to work with. She was professional, knowledgeable and exceptionally responsive making the entire experience so much easier and stress free. Lillian, Kara's office manager, was equally amazing and...

- Robert
5 Stars

Kara is the absolute best attorney! She represented me throughout my divorce, got me full custody of my son and also had my ex-husband ordered to pay for all attorney's fees. She's super knowledgeable, professional, compassionate...

- Ubah
5 Stars

Lydia & Kara have repeatedly provided outstanding service and insight to our office's clients. Their willingness to provide clear and unbiased feedback beginning with the very first conversation allows everyone to improve their...

- Xiomara S.
5 Stars

Thank you Lydia Hsu & Kara Foster of Foster Hsu Family Law Firm for giving my client referrals caring and professional advice for divorce, child custody and pre/postnups. Your compassionate and holistic approach to life's most...

- Lisa Bryant
5 Stars

From attorney to attorney, I can say that without a doubt Lydia Hsu is the person you would want representing you in a family law matter. Not only is her knowledge of the law superb but she has the demeanor which both commands a...

- Katya M.
5 Stars

Lydia is a fantastic family law attorney! She is professional, knowledgeable, caring, detail oriented, and responsive with her clients. We refer all of our family law matters to Foster Hsu because we know our clients are in good...

- David
5 Stars

Kara is absolutely amazing! She cares and helped me resolve my dissolution of marriage as quickly as she could. She is fair in her fees and dealings with both parties. She knows when to be assertive or aggressive, especially...

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