top of page

John L. Cowlin


John L. Cowlin is a partner in the Crystal Lake based law firm of Cowlin, Curran & Hanzel, where he concentrates his practice in the areas of local government, real estate, estate planning and civil litigation. Cowlin and his firm have been providing sound and practical legal advice to units of local government, individuals and business entities for decades.


John L. Cowlin, a life long resident of Crystal Lake, has acted or continues to act as counsel for the city of Crystal Lake, park districts of Marengo, Huntley and Hampshire, and Villages of Oakwood Hills and Huntley, as well as many local businesses.

University of Michigan, B.A., 1960
Wayne State University Law School, J.D., 1967

Illinois, 1968

U.S. Supreme Court

U.S. Court of Appeals, Seventh Circuit

American Bar Association

Illinois State Bar Association

McHenry County Bar Association (Treasurer, 1977-78; Secretary, 1978-79; President, 1979-80)

Municipal & Local Government

Real Estate & Land Use

General Civil 

Corporate & Business Law

Trust Wills & Probate

John L. Cowlin, Partner
bottom of page