I spotted this sign while running in Berkeley this morning, and had to go back for a photo. From the slogan it looks like they’re promoting energy-efficient home design, which is commendable; thus they probably want “quantum” to indicate “technologically advanced”. But of course, “quantum” also brings to mind uncertainty, which maybe isn’t what a contractor wants to associate themselves with. At the very least, I would expect Quantum Construction to be able to give a precise time estimate, or a precise cost estimate, but not both.
However, I assume their creation operators are top-notch.