Foundation Inspection Austin, TX.
An Austin foundation inspection has to answer one question before any quote means anything: how far has the slab actually moved, and why, clay heave east of MoPac, uneven limestone bearing to the west. We measure it to ±0.01 in. and hand you the report.
Where you live in Austin decides what your slab is fighting. Cross MoPac heading east and you're over deep, high-plasticity "Austin clay", plasticity index values commonly running from 40 to past 60, that swells hard after a wet spell and pulls away from the beams in a August drought. Head west, up across the Balcones Escarpment, and limestone sits close to the surface under thin soil, so the slab bears on rock that's stable in one spot and solution-weathered or voided a few feet over. Same city, two completely different failure stories.
That split is exactly why a real inspection isn't a walk-around and a verbal guess. It's an elevation survey that turns the shape of your floor into numbers, an engineer-backed read on which mechanism is at work under your house, and a written report you keep. Everything below is what that survey measures and what ends up in the document, no obligation to do a thing afterward.
What the elevation survey is actually reading
A licensed inspector shoots the whole footprint with a ZIPLEVEL PRO-2030 high-precision altimeter, accurate to ±0.01 in. (1/64 in.) corner to corner. Those readings get plotted as a contour map, because the shape of the distortion tells you the cause. A dome in the center usually means moisture trapped under the slab heaving the interior up; a sagging perimeter points to soil shrinking or eroding out from under the edge beams. The pattern carries as much information as the number.
Magnitude alone can mislead you. A one-inch drop measured across an entire 60-foot house, gradual and even, is a different animal than that same inch concentrated over a two-foot span, the second is a localized loss of bearing or a point load, and it changes the repair scope. The survey separates uniform tilt from sharp differential, which is the line between cosmetic and structural.
On the east-side clay, the inspector is also weighing depth against the active zone, the layer where seasonal moisture swings drive the clay up and down, typically 10 to 20 feet here. If a previous repair used pressed-concrete piers that stopped at 8 or 12 feet, they're parked inside that moving soil and the survey will often show the house cycling right back. West of the escarpment the read shifts to bearing continuity: probing for soft seams and voids in the limestone where adjacent piers may sit at very different depths.
How an inspection runs, start to report
Walk and document the visible signs
Inside and out, the inspector logs stair-step cracks in the brick, doors dragging at one top corner, drywall cracks fanning from openings, and any soft or musty spots that hint at a plumbing leak feeding the clay.
Shoot the elevation survey
The full slab is mapped to ±0.01 in. and turned into a contour showing every high and low point and where the movement concentrates.
Check grade, drainage, and any prior piers
We confirm whether water falls away from the house (the standard is six inches of drop over the first ten feet) and note the depth and condition of any existing piers relative to the active zone.
Hand you the written, engineer-backed report
You leave with the elevation readings, the diagnosed mechanism, and a recommended scope, a measured document, at no cost and with no pressure to sign.
The survey is free, and it's yours to keep
Every Austin inspection includes the full ±0.01-in. elevation survey, the contour map, and the written plan at no charge. There's no obligation and no on-the-spot pitch; you can take the numbers to an independent structural engineer or a second contractor.
If repair is warranted, GroundLock's scope ties pier count and spacing to a structural spec, and the steel-pier stabilization carries a lifetime transferable warranty that passes to the next owner. Financing is available, and most homes stay occupied during the work.
Austin foundation inspection questions
I'm east of MoPac on Austin clay, does that change what you're looking for?
What does the inspector hand me when they're done?
How long is the survey on site?
My last repair was done with concrete piers and the cracks are back, why would the survey show that?
Is the inspection really free, or is there a catch once you're at my door?
What's the difference between movement I should worry about and normal seasonal shift?
If you do end up recommending repair, what gets installed and how deep?
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foundation inspection.
Tell us where you are and what you’re seeing. A GroundLock structural advisor confirms within one business hour.
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Get your free foundation inspection.
A licensed inspector measures your slab elevation to ±0.01 in. (1/64 in.) and gives you a written, engineer-backed plan with zero pressure.