Business Law

At the Weinheimer Opel Law Firm, we represent businesses of all types and sizes, including many start-ups, family-owned and closely-held companies. We offer sophisticated yet practical advice and services on a full range of business-related legal iss…

Real Estate

Mark Weinheimer brings his extensive real estate experience to the Weinheimer Opel Law Firm, and we represent the full spectrum of developers, investors, institutional lenders, businesses and individual clients for every type of real estate matter, w…

Estate Planning

The lawyers at the Weinheimer Opel Law Firm have helped hundreds of clients in all aspects of estate planning—from a simple will to a complex multi-million dollar, multi-generational estate plan. We keep up with the ever-changing tax, probate and t…

Estate Administration

Losing a loved one is an overwhelming and burdensome time. The attorneys at the Weinheimer Opel Law Firm emphasize easing the burden of the probate and estate administration to make it as efficient and easy as possible for the family. Whether the dec…

Meet Our Attorneys

Mark B. Weinheimer's Profile Image
Mark B. Weinheimer
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Katherine L. Opel's Profile Image
Katherine L. Opel
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Contact Us

Weinheimer Opel Law Firm
One Ginger Creek Meadows
Glen Carbon, IL 62034
Phone: (618) 692-5111