Dallas, Texas
General Contractor
Serving Texas & Oklahoma
Concrete, paving and sitework. Excavation and land clearing. Custom luxury homes. Underground utilities. Metal buildings. One contractor, every phase.
What We Build
What Are You Planning?
From a patio or driveway to a custom home, commercial site or infrastructure project, tell us what you need built.
Concrete, Paving & Sitework
Driveways, patios, foundations, slabs, parking lots and site preparation.
View Concrete ServicesExcavation, Land Clearing & Demolition
Clearing, grading and preparation for your next project.
Learn MoreCustom Luxury Homes
Discuss your property, plans and vision for a custom home.
Learn MoreUnderground Utilities
Discuss your project's underground infrastructure scope.
Learn MoreMetal Building Construction
Explore construction for your residential or commercial building project.
Request InformationWhy Onyx & Iron
Developer-Aligned.
Builder-Grade Quality.
Most contractors handle one phase. We handle every phase — civil site prep, concrete, custom homes, and commercial finish-outs — under one roof. Fewer coordination headaches, tighter timelines, a single point of accountability.
- Transparent, fixed-bid or cost-plus pricing
- Full project management from day one
- Serving North & East Texas plus Oklahoma
Where We Work
We regularly serve Rockwall, Kaufman, Collin, Denton, Dallas, Hunt, Henderson, Smith, Ellis, Parker and Wise counties. Projects elsewhere in Texas and Oklahoma are considered based on scope, scheduling and travel requirements.
Ready to Break Ground?
Tell us about your project. We'll give you a straight answer on scope and what it takes to get it done right.