24/7 Customer Service 301-315-6260

Core Markets

Shapiro & Duncan has completed nearly 2,500 projects ranging from small-scale renovations to new mechanical construction jobs that are multi-year, multi-million dollar efforts.  We pride ourselves on the wealth of talent and experience our people bring to each and every one of our customers, and the ability it gives us to complete the most challenging projects successfully.

We perform Mechanical Construction, Special Projects and Service projects in the following Core Markets, in the Greater Washington, DC Metro area:



“Over the past 20+ years, Grunley Construction has looked to Shapiro & Duncan to perform mechanical work on many of our most important and most significant projects. Shapiro & Duncan truly represents a full-service mechanical contractor and they are beyond capable of performing a wide array of project types through nearly any delivery method. I believe that their innovation in design-build contracting, sustainable building, system modeling, integrated building technologies, and pre-fabrication has led to increased value to Grunley and our customers. The owners and officers of the firm are moral, honest, accessible, and fair; their rigorous approach to worker safety is unparalleled throughout the industry. Simply put, I will continue to recommend Shapiro & Duncan without hesitation for any project requiring innovative solutions to mechanical contracting.”

Kenneth M. Grunley, CEO and CFO

Grunley Construction Co., Inc.