Jonathan Leinheardt


Jonathan Leinheardt is an accomplished trial attorney with nearly 30 years of experience in New York and Colorado. He represents clients in:

  • Elder Law
  • Trust and Estate Litigation and Administration
  • Civil Litigation
  • Domestic Relations
  • Criminal Defense

He is a former New York City prosecutor where he handled a variety of cases through successful investigation, trial, and appeals. After leaving the Queens County DA's office, he began focusing on proceedings to appoint a Guardian to handle a person's financial affairs or personal needs. He received numerous appointments as Court Evaluator serving as the eyes and ears of the Court. After moving to Colorado in 2003, he focused on guardianship and conservatorship matters at Stiner, Beck, Jonson & Nolan in Golden, and Stevens, Littman, Biddison, Tharp & Weinberg, in Boulder. He has been receiving court appointments as respondent’s counsel in protective proceedings under Title 15 of the Probate Code, while developing vast experience in a wide range of domestic relations matters. He served as Chair of the Boulder County Bar Association’s Elder Law Section in 2017-2018. Mr. Leinheardt also serves as Chair of the Board of Directors of REACH Charter School in Denver, one Colorado’s first fully inclusive schools, and also serves on the Board’s Governance Committee.

Contact Our Office

Hurth, Sisk & Blakemore
Attorneys at Law

4860 Riverbend Road
Boulder, CO 80301

Phone: 303.443.7900
Fax: 303.443.8733

Office Hours:
Monday – Thursday
8:00 am – 5:00 pm

8:00 am – 4:30 pm

Closed Saturday & Sunday

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