Strong Foundations Start Here
Castillo Underground is a civil site work and underground utility contractor in the Rio Grande Valley, committed to excellence in every excavation, utility installation, and municipal infrastructure project we take on.
SPEED.
SAFETY.
RELIABILITY.
We handle the work that has to happen before anything else can be built. From mass grading and underground utility installation to roadway construction, we prepare subdivisions and commercial sites so developers can build on schedule, and we build and repair the lift stations and water mains that keep cities running.
With over a decade of hands-on experience, our team shows up when promised, solves problems before they slow you down, and meets the highest safety standards on every job site.
