Commercial Foundation Repair

Bigger loads, engineered solutions

Commercial foundation repair follows the same physics as residential — Austin’s expansive clay still drives the movement — but the stakes and engineering are larger. Heavier structural loads mean repairs lean on engineered steel push piers and helical piers sized to the building, almost always with a licensed professional engineer’s stamped plan (which, for commercial work in Texas, you should treat as mandatory).

What commercial owners and managers weigh

• Engineering first. A stamped plan defines pier type, spacing, and depth, and protects you on liability and resale.
• Business continuity. Repairs are typically phased to keep the property operating — by zone, after hours, or in stages.
• Downstream impacts. Movement and repair can affect tenant spaces, ADA paths, slabs-on-grade for equipment, and warranties — plan for them.
• Documentation. Lenders, insurers, and future buyers will want the engineer’s report and warranty.

Foundation movement and ADA compliance

A sloped floor at a house is a maintenance and safety question. At a commercial building, it can also be a legal one. The accessibility code standard for an accessible route — ADA Standards §403.3, matched by the Texas Accessibility Standards — caps cross slope at 1:48, about 2%, for entrances, aisles, and restroom paths. Foundation movement severe enough to push part of that route past 2% isn’t just a trip hazard; it’s a compliance gap that can surface during a lease-up, a sale, or a complaint. It’s worth having whoever assesses the foundation flag any accessible route that looks close to that threshold, so it gets measured rather than eyeballed.

Why commercial buildings carry a different design load

Under ASCE 7 (adopted by the building code), every structure gets a Risk Category from I to IV based on the consequence of failure. Most offices, retail space, and light-industrial buildings fall in the standard Risk Category II — the same baseline as a house. But buildings with large public assembly (300+ occupants), schools, or healthcare functions step up to III or IV, which raises the required wind, seismic, snow, and flood design loads. Those loads flow straight into the foundation: a higher risk category can mean a stiffer footing, more piers, or deeper embedment for the same footprint.

The geotechnical report you probably already have

Commercial financing and permitting usually put a geotechnical (soil) report in the project file before repair design even starts — a step residential jobs often skip. That report matters for pier sizing: helical pier systems are engineered under ICC-ES AC358, which allows the standard 2.0 factor of safety when a geotechnical report backs the design, versus a more conservative 2.5 without one. In practice, a commercial project’s existing soil report can mean a tighter, more cost-efficient pier count than the same repair without it.

Whose engineer is stamping the plan?

Most commercial repair contractors retain or employ the PE who stamps the repair plan — that satisfies the permit requirement, but it’s the same incentive structure as a contractor’s free residential inspection: the engineer works for the company selling the repair, not for you. For a lease renewal, refinance, sale, or any dispute where you want an unbiased second opinion, you can retain your own structural engineer the way a homeowner would for residential repair — the evaluation and report work the same way, just scoped to the building.

Cost and next step

Commercial pricing is engineered per project, ranging from the low five figures to six figures with building size and complexity. Because the variables are specific, the right starting point is an engineer-backed assessment. We can connect you with a vetted specialist who works with a licensed PE on commercial structures; for the underlying methods, see settlement repair.