What Should Be in a Written Foundation Inspection Report?

A verbal 'you've got some movement' is not an inspection report. A proper written report gives you measured elevation data, labeled photos, a diagram, honest limitations, and a named person standing behind the conclusions, so you can act with confidence instead of pressure.

Why the written report matters more than the sales pitch

In Central Texas, foundation movement is normal background noise. The Blackland Prairie's Houston Black clay swells when it rains and shrinks in a drought, and that seasonal shrink-swell can lift or drop parts of a slab enough to crack drywall and stick doors. Because some seasonal movement is expected, the real question is never just 'is it moving?' It is 'how much, where, and is it getting worse?' Only a written record answers that.

A conversation on your driveway disappears the moment the truck leaves. A written report is a durable, dated snapshot you can compare against next year, hand to a structural engineer for a second opinion, attach to a TREC seller's disclosure, or show a lender. It converts a subjective impression into something you and any other professional can verify independently.

If a company will not put its observations in writing with actual measurements, that tells you something. The report is where honesty gets tested, because numbers and labeled photos are hard to argue with and easy to check. Treat the document, not the pitch, as the deliverable you are evaluating.

The seven things a complete report should contain

A thorough foundation report is not a one-page quote. It should walk a reader who was never at your house through what was seen, what was measured, and what it means. The strongest reports separate observation from opinion so you can tell the raw facts from the interpretation.

Use the checklist below when you read yours. If several items are missing, you have a sales estimate dressed up as an inspection, and you are entitled to ask for the rest before you sign anything.

• Observations: a plain-language account of visible symptoms — cracks (with widths and locations), separated trim, sloping floors, sticking doors and windows, and exterior brick or mortar cracking.
• Elevation data: actual floor-height readings taken across the home with a reference point, so relative highs and lows are quantified in inches, not adjectives.
• A diagram or floor plan: a to-scale sketch mapping where readings, cracks, and any proposed piers are located, so words tie back to specific spots.
• Photos: dated, captioned images of each significant symptom, ideally keyed to the diagram.
• Limitations: an honest statement of what was NOT accessible or inspected and any conditions that affected the findings.
• Conclusions: the inspector's interpretation of the data — the likely cause and severity, and whether movement appears active or stable.
• Recommendations and reviewer credentials: what to do next (including 'monitor, do nothing yet' when that is the right call) and the name, title, and license of whoever is responsible for the findings.

Elevation data and diagrams: the part most people skip

Elevation readings are the backbone of a credible report, and they are the item cut-rate inspections most often omit. A survey uses a manometer (a water-level or laser instrument) or a rotating laser to record the relative height of the floor at points across the home. The output is a grid of numbers showing how far each point sits above or below a chosen reference, which reveals the shape of the movement — a dished center, a heaved corner, a slope toward one wall.

Precision matters because you are looking for change over time. GroundLock's free elevation survey reads to +/-0.01 inch (1/64 inch), and that resolution lets a follow-up survey next season detect whether the foundation is genuinely moving or simply reflects settled, stable conditions. A single reading is a snapshot; two readings months apart tell you the trend, which is what actually decides whether you repair now or monitor and re-measure.

The diagram is what makes those numbers usable. A dated floor plan with the readings plotted, symptom locations marked, and any proposed pier locations shown lets you — or an independent engineer — see the story at a glance and check that the recommended work lines up with where the movement actually is. Numbers without a map, or a map without numbers, is half a report.

Limitations, conclusions, and who signed it

A trustworthy report is candid about what it could not see. Foundations get inspected with furniture in place, floor coverings down, and soil hiding the perimeter, so a good limitations section says so plainly: areas blocked by storage, a slab covered in tile, crawlspace access that was too tight, or recent rain that skewed soil conditions. An inspector who claims to have seen everything is overselling; the honest ones tell you where the blind spots are.

Conclusions should follow logically from the observations and elevation data, not leap ahead of them. Look for language that distinguishes cosmetic, seasonal movement from progressive structural movement, and that states severity in measured terms. Be wary of a report that jumps straight from a hairline crack to a five-figure pier recommendation without elevation numbers connecting the two.

Finally, check who is responsible for the document. A report should carry a name, a title, and — where structural conclusions are being drawn — the involvement of a licensed Texas professional engineer, whose stamp means a qualified party is legally standing behind the opinion. A GroundLock survey comes with an engineer-backed written repair plan for exactly this reason. Knowing the reviewer's credentials tells you how much weight the conclusions deserve and whether a second opinion is warranted.

How to read the numbers without a degree

An elevation survey usually presents as a floor plan dotted with values like +0.3, 0.0, or -1.1. The reference point (often set at 0.0) is arbitrary; what matters is the difference between points. If one corner reads -1.4 inches relative to a high point twenty feet away, the floor drops roughly one and a half inches across that span. Whether that is alarming depends on the pattern, the span, the finishes, and whether it is changing.

General industry practice treats larger differentials over shorter distances as more concerning, but no single threshold fits every home, and Texas has no universal 'fail' number that applies to every slab. That is precisely why the report should interpret the data in context rather than hand you a raw grid and a quote. Age, construction type, and local soil all shift what a given reading means.

Context in Central Texas means geology. East and south of the Balcones Escarpment, homes sit on deep expansive clay with a plasticity index commonly in the 40 to 60 range and an active shrink-swell zone often around six to fifteen feet deep. West and north, thin soils over Edwards limestone behave very differently. A good report reflects which side of that line you are on, because the same crack means different things on clay than on rock. You can cross-check your soil type on the free USDA Web Soil Survey and USGS geologic maps.

When repair genuinely is warranted, the elevation map is also what a plan is built from: pier locations should target the measured low areas, and the report should explain the method. GroundLock's approach hydraulically drives galvanized steel piers past the active clay zone to load-bearing strata and stops at refusal — the point where the soil can carry the load — rather than to a fixed advertised depth. If you reach that stage, understanding the steel-pier method and typical repair cost ranges helps you read the recommendation critically.

• Reference point: The 0.0 mark is a chosen baseline; only the differences between points carry meaning.
• Differential, not absolute: A large height change over a short distance generally matters more than the same change spread across the whole house.
• Pattern over single points: A dished, domed, or tilted shape tells you more about cause than any one reading.
• Two surveys beat one: Comparing dated surveys separated by a season is how you prove movement is active rather than stable.
• Method to refusal: Sound plans drive piers to load-bearing strata at refusal, not to a fixed marketing depth.

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