About

Sigma Consulting Services Inc. is a multi-faceted service provider specializing in residential design and drafting, architectural CAD software sales, CAD training and technical support services.

Gary Thill is the owner and principal consultant of the Denver-based corporation.

Gary has been working in the field of residential design and drafting since 1971 and has been using ARRIS CAD, a high-end architectural CAD software, since 1984. Much of his 35 years of CAD experience comes from working directly for the ARRIS CAD software manufacturer, Sigma Design.

In addition to his ARRIS CAD expertise, he has over 45 years of experience in residential design and drafting and offers a wide variety of 2D and 3D CAD services to his clients.