Alex Watson Tremellen

She | Her | Hers


Costa Mesa
T +1.714.966.8808
F +1.714.754.6611


Alex Watson Tremellen focuses her practice on tax and estate planning and the administration of trusts and estates for high-net-worth individuals. She organizes structures to distribute generational wealth with a focus on federal, gift, estate and generation-skipping transfer (GST) taxes. With a background in tax law, Alex also counsels high-net-worth individuals, business owners, charitable organizations and family offices in charitable planning, succession planning and wealth preservation. 

Coming from a tenth-generation Orange County family, Alex enjoys counseling local Orange County clients as well as clients across the country.

While attending UC Irvine School of Law, Alex received a Faculty Award (Highest Performance in a Course) for California State Business Tax and was President of the UCI Tax Law Society. She has taken a variety of tax courses including estate tax, partnership tax, corporate tax, state and local tax and tax procedure. Alex is a current Tax LL.M. candidate at New York University School of Law.

Select Experience

  • Represented clients in federal and state tax audits and appeals involving the Internal Revenue Service, California Franchise Tax Board (FTB), California Employment Development Department (EDD) and California Department of Tax and Fee Administration (CDTFA).
  • Represented clients in administrative appeals before a hearing officer in the CDTFA regarding sales and use taxes.
  • Represented companies in mergers and acquisitions, corporate governance and entity formation. Prepared entity formation documents, including articles of incorporation, bylaws, operating agreements and shareholder agreements. Prepared stock purchase agreements and asset purchase agreements.
  • Advised startup companies on tax planning for corporate transactions and business sales.

Recognitions and Memberships


  • California Certified Public Accountant Candidate (Met California Board of Accountancy Education Requirements to sit for California CPA Exam)
  • International Association of Privacy Professionals CIPP/US Certification


  • American Bar Association, Tax Section
  • Orange County Bar Association
  • Beverly Hills Bar Association


  • San Juan Capistrano Historical Society

Prior Positions

  • AM Law 100 Firm, Corporate and Securities Group: Associate
  • Tax Controversy Boutique Firm: Law Clerk
  • Orange County District Attorney's Office, Consumer/Environmental Protection Unit: Law Clerk 


  • U.S. Tax Court
  • California


  • LL.M. (Tax), New York University School of Law
  • J.D., University of California, Irvine School of Law, 2022; Distinguished Decade Scholar (Full Merit Scholarship); UC Irvine Law Review, Executive Board; UC Irvine Journal of International and Comparative Law; Jessup International Law Moot Court
  • B.S.B.A., University of Florida, 2019, with honors


  • Spanish