About Us

We are committed to being a leader in the commercial interior design industry by using our shared experience and hands-on approach to provide exceptional client service and design.

35 years of EXPERIENCE

Chief Executive Officer, Timothy R. Lies, founded The Interior Design Group Ltd., in 1985 with a vision to provide unparalleled service. From its inception, our firm has grown from a one-man shop to a team of dedicated professionals.

Our reputation precedes us

IDG has earned the reputation of being a premier architecture and interior design firm servicing the Chicagoland area.

Our commitment

We are committed to making your business, our business. In doing so, we will stop at nothing to make sure every aspect of your project exceeds your expectations.


We bring unique, creative solutions
to every design challenge.


Our quick turnaround times are
achieved without cutting corners.


We work within the constraints of any budget, without sacrificing design.


Our rigorous review process ensures unparalled quality and accuracy.

Our history


Established and opened our first offices in Wheaton, IL.


Relocated our offices to
Glen Ellyn, IL.


Expanded and relocated to
Oak Brook, IL.


Acquired building, remodeled and relocated to Glen Ellyn, IL.


Rebranded and relocated to
Lisle, IL.


Celebrated 35 years in business!