As a leading mechanical/electrical engineer, a responsive partner, and a trusted consultant, Mueller Associates has supported many design projects in the regional corporate community. Our work includes engineering for new base buildings and renovations, interior fit-outs, administration buildings, data centers, high-tech laboratories, R&D facilities, manufacturing and assembly facilities, and warehouses and other support spaces.


Northrop Grumman

Mueller has engineered more than 950 projects for the defense industry giant

Mueller Associates Office

Our new office features advanced technology and expansive presentation and training space

Quinn Evans Headquarters

LEED®-Gold studio space helps foster creativity and collaboration in QE’s Washington, DC office