Concrete Foundations in Austin, TX

The slab foundation is the most structurally critical component of any building, and in Austin's expansive clay soil environment, getting it right is everything. Post-tension concrete slabs are the standard for residential construction throughout Central Texas — high-strength steel cables tensioned after the concrete cures resist the seasonal soil movement that Austin clay introduces over the life of the structure. Conventional rebar slabs are also used for additions and detached structures. Both types must be designed by a licensed structural engineer and inspected at multiple phases.

The foundation pour process begins long before concrete trucks arrive. Site preparation includes clearing, grading, setting grade stakes, trenching beam forms, installing the vapor barrier, placing plumbing rough-in, positioning rebar or post-tension cables to engineer specifications, and scheduling the pre-pour inspection with the city building department. Only after the inspection is passed can the pour begin. We manage the full inspection schedule — providing required documentation and ensuring every phase is signed off before proceeding to the next.

Post-tension foundations require a stressing crew 24 to 48 hours after the pour. The cables are stressed to engineered specifications using hydraulic jacks, then the tails are cut and grouted. Many foundation companies subcontract this step; we coordinate it directly, maintaining quality control from pre-pour through stressing and final inspection. We also pour foundations for accessory dwelling units (ADUs), which have surged across Austin following city code changes that permit ADUs on most residential lots. If you're planning a foundation project anywhere in the Austin metro, we'll walk you through the full permit pathway, timeline, and cost before you commit.