John G. Gehringer

John G. Gehringer is a Wisconsin commercial real estate lawyer and member of O’Neil Cannon’s real estate and business law groups. He advises financial institutions, developers, REITs, architects, engineers, hotel owners, contractors, design builders, landlords, tenants, and title insurers. His practice covers development, construction, financing, acquisitions, dispositions, leasing, zoning, land use, environmental concerns, and creditors’ rights. He provides preventive and remedial guidance for complex property and construction matters.

John completed his legal education at Marquette University Law School after earning a B.A., cum laude, from Marquette University. His professional memberships include the American Bar Association, Milwaukee Bar Association, State Bar of Wisconsin, and Waukesha County Bar Association. He also belongs to the American Bar Association’s Forum on the Construction Industry. His educational foundation and professional involvement support analysis of contracts, financing structures, regulations, development plans, and disputed property rights.

John includes commercial, retail, and office leasing, condominium development, association management, zoning approvals, and land use concerns in his real estate practice. He represents lenders and borrowers in construction and commercial financing transactions. He has advised clients on medical, office, retail, hotel, residential, industrial, and infrastructure developments. His environmental work includes brownfields redevelopment and remediation strategies. He helps clients identify obstacles, negotiate workable terms, protect investments, and complete transactions.

John G. Gehringer brings experience to high-value developments, loans, acquisitions, sales, and construction disputes. He has served as counsel on projects involving medical centers, a power plant, an office tower, a newspaper production facility, and commercial properties. His recognition includes the 2021 Best Lawyers “Lawyer of the Year” award for construction law. He has appeared in The Best Lawyers in America and Wisconsin Super Lawyers for many years. His AV rating from Martindale-Hubbell reflects strong peer recognition. He has lectured on commercial loan workouts, lender liability, and brownfields development while maintaining community leadership roles.

Law Office Affiliations

• Member, O’Neil, Cannon, Hollman, DeJong & Laing S.C.
• Member, American Bar Association
• Member, Milwaukee Bar Association
• Member, State Bar of Wisconsin
• Member, Waukesha County Bar Association

Licensed State

• Wisconsin

Education

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