Jay D. Kostecki

Jay D. Kostecki is a partner-level attorney whose practice focuses on estate planning, estate administration, business formations, commercial transactions, litigation, and property tax appeals. He advises individuals and businesses on structuring plans, managing assets, and resolving disputes efficiently. His work emphasizes careful planning, clear documentation, and practical legal strategies designed to protect client interests while supporting stability, compliance, and long-term objectives across varied legal matters.

Kostecki completed his undergraduate education at Marquette University before earning his Juris Doctor from UIC Law School, formerly The John Marshall Law School, in Chicago, Illinois. His academic training supports strong analytical reasoning, transactional drafting, and litigation fundamentals. This foundation allows him to address complex legal issues with clarity while aligning legal solutions with practical business and estate planning goals for diverse clients.

Throughout his legal career, Kostecki has advised clients on business formations, commercial agreements, estate administration, and property tax appeals. His experience includes drafting contracts, guiding fiduciaries through probate matters, and representing clients in valuation and tax-related disputes. He works closely with clients to understand objectives, anticipate risk, and develop solutions consistent with applicable law and regulatory requirements across varied transactional and contested matters.

Jay D. Kostecki is known for a methodical, client-focused approach to representation. He prioritizes communication, organization, and forward-looking planning to reduce risk and avoid unnecessary conflict. Whether assisting with estate plans, business transactions, or property tax appeals, he provides steady guidance and responsive service. Clients rely on his attention to detail, sound judgment, and commitment to informed decision-making through every stage of representation and planning.

Law Office Affiliations

• Partner, Kozar Law Office, LLC
• Member, Illinois State Bar Association

Licensed State

• Illinois

Education

• UIC Law School
  Juris Doctor (JD)
• Marquette University
  Bachelor of Arts (BA)

Awards & Badges