About Us
About CNG Engineering, PLLC
Who We Are
San Antonio-based CNG Engineering, PLLC is a professional mechanical, electrical, and plumbing (MEP) design firm. Since 2004, we've delivered master planning, design, and building commissioning services for public sector clients across Texas — earning a reputation for clear, concise, and complete solutions.
What drives us forward is our unwavering Attention to Detail, which has helped us build lasting relationships and a strong reputation throughout the A/E/C community. Our work is rooted in integrity, technical excellence, and a people-centered approach — because engineering is about more than systems; it's about serving the communities behind them.
With deep expertise in municipal, aviation, education, healthcare, and commercial facilities, we've played a key role in shaping some of our community's most impactful public projects.
By the Numbers
Certifications & Designations
Small Business Enterprise (SBE)
- Texas Department of Transportation
- South Central Texas Regional Certification Agency
- City of Austin
- Metropolitan Transit Authority of Harris County
Minority-Owned Business Enterprise (MBE)
- City of Austin — African American–Owned Business
Our Core Values
Since our founding in 2004, these principles have shaped our culture, guided our decisions, and defined the character of our company. They reflect what we believe in, how we show up for one another, and the standard we hold ourselves to as we serve our clients and communities.
FAMILY
We believe in showing up for each other—with honesty, care, and support. Whether at work, at home, or in the community, we build relationships that feel like family.
INTEGRITY
We do the right thing, even when it's not easy. We act with respect, take ownership, and keep our word.
PERSONAL GROWTH
We are always learning—about our craft, our industry, and ourselves. Growth isn't just a goal; it's how we live.
PERSEVERANCE
Challenges don't shake us. We stay focused, optimistic, and keep moving forward—with confidence and drive.
EXCELLENCE
We take pride in our work and hold ourselves to a higher standard, delivering exceptional results.
TEAM WORK
We share ideas, genuinely listen, and work in sync. We are better together – achieving more.
Projects That Define Our Community
Over two decades, we've been trusted to engineer the MEP systems behind some of Texas's most significant public buildings — from airports and convention centers to hospitals and universities.
We're proud to engineer environments where people work, learn, heal, and connect.
Advancing our purpose through every project we touch.