If you sign your Seller's Disclosure Notice this month and your foundation looks fine to the eye, are you being truthful? Almost certainly. But the ground under your slab has been running a different experiment all summer, one that has little to do with what you can see from the hallway, and everything to do with what happens the first time it rains.
That timing gap is the thing most Keller sellers miss. Disclosure law asks what you know. Clay soil doesn't care what you know. It cares what it's done, and this year it's done more than usual.
The Ground Doesn't Read the Calendar
Keller sits on a mix of Austin Chalk and Eagle Ford Shale, overlaid with expansive Vertisol clay that longtime local engineers still call "black gumbo." That soil swells when it's wet and shrinks when it's dry, and the swing between those two states is what stresses a slab foundation, not the drought or the rain on their own.
This year gave the soil more of both. Tarrant County has logged 23 days of triple-digit heat so far in 2026, compared to just seven all of last year, according to National Weather Service data reported by the Fort Worth Report in mid-August. The same reporting found the county sitting in abnormally dry conditions as of that point in the summer, with area reservoirs running a few feet below their conservation levels. That's a sharper shrink cycle than most Keller homeowners have seen in recent memory, and it's happening on soil that already carries scar tissue. Some homes in the area still show settlement from the 2011 drought, more than a decade later.
The mechanism that matters for a fall listing is what comes next. When the current dry stretch breaks, and North Texas weather tends to swing hard between extremes, the same clay that's been contracting all summer will swell again. Cracks that opened during the heat can close up, doors that stuck in July can swing free again in November, and a seller walking through the house in October may see nothing that looks like a defect. The absence of a visible crack today doesn't mean the movement didn't happen. It means the soil hasn't finished moving yet.
What "Known" Actually Means on the Form
Texas Property Code Section 5.008 requires most residential sellers to complete a Seller's Disclosure Notice listing known defects, including structural issues like foundation cracks. The law is built around what you know, not what a hypothetical inspection might have found. That's a reasonable standard, but it creates a gap for anyone selling into a year when the soil has been unusually active. If you haven't looked closely since spring, and the visible signs closed up over the summer, you can fill out that form in good faith and still be wrong about what's actually happening beneath the slab.
The exposure isn't abstract. Texas courts and the state's Deceptive Trade Practices Act give buyers real recourse if they later discover a defect the seller should have known about, including the possibility of triple damages in cases involving intentional concealment. That's not a reason to panic. It's a reason to make sure the "known" box on your disclosure form reflects a real, current look at the foundation rather than a summer's worth of coincidentally quiet weather.
Buyers Are Looking Harder This Year
The other half of the timing problem is who's checking. Local inspectors report that 80 to 90 percent of Keller buyers are now using inspection contingencies in 2026, a reversal from the waiving trend that defined the tightest years of the seller's market. Buyers in this price range, often move-up families or relocating professionals with the most to lose, are treating a $30,000 foundation surprise as a dealbreaker worth protecting against, not a risk worth absorbing for a faster close.
That inspection happens during the option period, typically five to ten days after a contract is signed. It's a short window, but it's also the moment when a foundation issue that didn't make it onto your disclosure form gets discovered by someone else, on their timeline, with their negotiating leverage. A comprehensive inspection package covering the home, termite, sewer scope, and pool commonly runs $1,050 to $1,425 for a Keller property, and if that inspector flags foundation movement, the buyer's next call is often to a structural engineer, at another $400 to $800, before they'll agree to move forward.
Here's what that conversation tends to cost once the scope is known, based on current pricing from regional foundation engineers and repair firms:
| Repair Scope | What It Typically Involves | Estimated Cost |
|---|---|---|
| Standalone foundation inspection | Elevation survey, crack assessment, no repair work | $200 to $500 |
| Minor crack patching | Isolated repair, no pier installation needed | $500 to $1,500 |
| Partial perimeter pier repair (4 to 8 piers) | Localized corner settlement, the most common Keller scenario | $3,500 to $7,500 |
| Full perimeter repair (10 or more piers) | Widespread differential movement across multiple wall lines | $8,000 to $20,000 or more |
The gap between the top and bottom rows isn't just money. It's the difference between a seller who caught a minor issue early and one who found out during someone else's option period, after the price was already negotiated around a clean disclosure.
The Move That Puts You Ahead of the Option Period
The fix isn't complicated, but the timing matters more than usual this year. A pre-listing structural evaluation, done now while the soil is still in its late-summer baseline rather than after the first real fall rain resets it, gives you an accurate picture before you write anything on the disclosure form. Firms like Thomas Engineering Consultants, whose principal engineer Tommy LaLonde has spent close to three decades working these soils, operate independently of repair work specifically so the report reflects the foundation's condition rather than a sales pitch. That distinction matters under Texas rules, since foundation repair companies aren't required to hold an engineering license, and a report from a firm that also sells the repair carries an obvious conflict.
An evaluation like this typically takes an hour and a half to three hours on a standard single-family home, with a written, engineer-sealed report back within a day or two. If it comes back clean, you've documented that fact before the weather turns, which is worth more this year than in a normal year. If it finds something, you now have the choice of handling it on your own timeline, before a buyer's inspector finds it during a five-day option period with a deal already hanging on the outcome.
What This Means If You're Listing This Fall
Get the structural evaluation before you finalize your disclosure form, not after. Ask specifically whether the firm sells repairs, since an independent report carries more weight with a buyer's lender and their own inspector. If the report flags movement, get it in front of a licensed engineer rather than a repair company's sales estimate, so you know whether you're looking at crack patching or a partial pier job before you price the difference into your listing. And if you've had repair work done in the past, keep the documentation on hand. A completed, documented repair is generally the cleanest path through a buyer's inspection, far cleaner than an undocumented "it was fine when we lived there."
None of this is about assuming your home has a problem. Most Keller homes on slab foundations handle normal seasonal movement without incident. It's about making sure the picture you give a buyer reflects this year's soil conditions, not last year's assumptions.
A Few Questions Worth Asking Directly
Does a foundation repair from years ago still need to be disclosed? Yes. The disclosure form asks about known defects and prior repairs, not just current active problems, so documented past work should be listed even if it's fully resolved.
Is a general home inspection enough, or do I need a separate structural evaluation? For Keller specifically, most local inspectors recommend a dedicated engineer evaluation if any movement is suspected, since a general inspection isn't built to take the elevation measurements a structural report requires.
How long do I have during the option period if I'm the buyer and something turns up? Typically five to ten days, which is why sellers who've already done the work ahead of time tend to move through this stage without a renegotiation.
If you're weighing a fall listing and want a second set of eyes on what this year's weather has actually done to your property, Sophie Tel Diaz Real Estate can help you line up the right evaluation before you write a word on your disclosure form. Request a complimentary home valuation to start that conversation.
