At Tri-County Construction LLC, we bring over 18 years of combined experience to every project, serving both residential and commercial clients across Delaware. As a family-owned and operated business, we are committed to providing the highest quality construction services with a personal touch that sets us apart from larger companies. Led by owner Carlos Diaz, our team is dedicated to exceeding expectations through professionalism, attention to detail, and a strong work ethic. We specialize in a wide range of construction services, including concrete work, paving, fencing, and excavation, among others. Our reputation is built on delivering durable, high-quality results, no matter the size or scope of the project.

Our Mission
To provide durable, high-quality construction solutions that exceed our clients’ expectations through expert craftsmanship, transparent project management, and a strong work ethic.

Core Values

• Integrity: Honest and transparent in all that we do.

• Quality: Committed to delivering long-lasting results with premium materials and skilled labor.

• Reliability: On-time, on-budget performance every step of the way.

• Safety: Maintaining safe worksites and adhering to all OSHA standards.

• Client-Focused: Your satisfaction is our top priority.