John A. Castro

Deputy County Counsel

John A. Castro joined the Finance, Government Operations, and Environment team in 2019.  John’s practice focuses on advising multiple County departments and special districts on matters relating to construction, real property, and other contract issues.  Prior to joining the County, John represented owners, design professionals, general contractors, and subcontractors in transactional matters, as well as matters involving claims and dispute resolution.

John’s professional expertise includes:

  • Construction dispute resolution and litigation
  • Public contracting, bidding, and procurement
  • Public works / capital projects
  • Alternative project delivery methods


  • University of California, Hastings College of the Law, J.D., cum laude, 2010
    • Executive Articles Editor & Symposium Editor, Hastings Constitutional Law Quarterly
      • Second Class Citizens, Hastings Constitutional Law Quarterly, 37 Hastings Const. L.Q. 199 (2010)
    • CALI and Witkin Awards in Criminal Law and Disability Law
    • External Political Chair, Hastings La Raza Law Students Association
    • Member, Hastings Pro Bono Society
  • University of California, Santa Cruz, B.A., Politics and Philosophy, 2005

Professional Associations

  • Forum on Construction Law, American Bar Association (2018-Present)
    • Division 13 (Government Construction) (Steering Committee) (2020-Present)
  • Legal Advisory Committee, Associated General Contractors (2017-2018)
  • Barrister in the Earl Warren American Inn of Court (2014)

Prior Experience

  • Senior Associate Attorney at Gordon Rees Scully Mansukhani, LLP (2017-2019)
  • Senior Associate Attorney at Boornazian, Jensen & Garthe (2011-2017)
  • Research Attorney at Superior Court of California, County of San Francisco (2010-2011)

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