Texas-based general contractor specializing in mechanically intensive construction
We deliver mechanically focused construction, system upgrades, and energy-efficient solutions for federal and commercial facilities. Led by a team of engineers with field-tested experience.
We manage every critical step of
mechanically intensive construction.
“From design assistance through execution, QDNB supports mechanically complex projects that require technical accuracy.”
“QDNB handled the technical details we didn’t have time for and delivered solutions that actually improved system performance.”
“We needed a solution we could trust in an aging facility—and this group delivered. Reliability, safety, and better performance.”
From design-assist through execution, QDNB supports mechanically complex projects that require technical accuracy, clear coordination, and disciplined follow-through.
“QDNB handled the technical details we didn’t have time for and delivered solutions that actually improved system performance.”
Especially within aging federal facilities and active operational environments where reliability, safety, and performance cannot be compromised.
From design-assist through execution, QDNB supports mechanically complex projects that require technical accuracy, clear coordination, and disciplined follow-through.
“QDNB handled the technical details we didn’t have time for and delivered solutions that actually improved system performance.”
Especially within aging federal facilities and active operational environments where reliability, safety, and performance cannot be compromised.
Veteran-owned, Texas-based general contractor specializing in mechanically intensive construction.
Our work prioritizes energy efficiency, system reliability, and accessibility—particularly within federal facilities serving veterans and individuals with disabilities.
Engineer-Led Team
Hands-On Partnership
40+ Years of Experience
CONTACT US
cnigaglioni@qdnb-us.com
Engineer-led oversight ensures every system is reviewed, coordinated, and executed with efficiency in mind.
Engineer-led oversight ensures every system is reviewed, coordinated, and executed with efficiency in mind.