About us
About Tri-County Construction LLC
For over 18 years, Tri-County Construction LLC has been the trusted choice for residential and commercial concrete, paving, excavation, and fencing services across Delaware, Maryland, and Pennsylvania.
Founded by Carlos Diaz Martinez, our family-owned company grew from a simple passion for hands-on craftsmanship into a full-service construction business built on integrity, reliability, and customer satisfaction.
Why We’re Different:
🏗 Comprehensive Services – Driveways, patios, parking lots, sidewalks, and more.
✅ Built to Last – We use only high-quality materials and proven methods.
👷 Family-Owned & Local – We treat every project like it’s our own home.
⭐ Customer First – Clear communication, fair pricing, and results you’ll be proud of.
Our mission is simple: to build stronger spaces and lasting impressions. Whether it’s a new driveway for your family or a large commercial project, we bring the same dedication and attention to detail.
QUESTIONS?
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