Corpus Christi Foundation Co. takes requests from Nueces, San Patricio, Aransas, Kleberg and Jim Wells counties and passes each to one independent local specialist. Many local specialists don't charge for the first assessment; ask when they call. Ask for floor elevations, and keep the written scope whether you hire the specialist or not.
Four positions on one gradient
On the water
Barrier island sand at Port Aransas, which does not shrink or swell at all, and bay margin ground at Rockport where the water moderates the extremes. The narrowest annual swing in the region, and the places where the usual regional explanation most often turns out not to apply.
Bayfront towns
Mixed ground with the bay still exerting some influence. Portland sits high and newer, with post-tensioned slabs common on the later streets. Ingleside runs two housing generations. Aransas Pass sits low with soil that changes character over a few blocks.
Portland · Ingleside · Aransas Pass
Inland clay
Out on the agricultural flat where Victoria clay runs deep and nothing interrupts it. No water nearby to moderate conditions and no sand to break it up. This is where the annual cycle is at its most straightforward, and where narrowing it does the most good.
The dry end
Further inland and further south, where the deficit runs longest. The Kingsville station records 30.38 inches a year against Corpus Christi's 31.76. Alice sits at the far end of the gradient, with the widest swing in the region and the fewest competing explanations.
What changes along it
| Position | What to check first | Common finding |
|---|---|---|
| Barrier island | Whether anything has moved at all | Construction tolerance rather than movement |
| Bay margin | What is growing close to the house | A mature tree outweighing the moderated soil |
| Bayfront, newer | Slab type, before anything else | Post-tensioned construction constraining the options |
| Inland flat | The seasonal pattern of the damage | A textbook swing, and stabilisation worth buying |
| Dry end | The same, more so | Fewer competing explanations, wider amplitude |
One assessment everywhere
A good assessment includes floor elevations across the footprint, an exterior walk, and a plain statement of which rung of the ladder the house is on. Rung-by-rung pricing lives on the cost guide, and booking a visit takes a minute.
Asked about coverage
Is there a charge for reaching Alice or Kingsville?
Ask the specialist whether the first assessment is charged, regardless of the drive, and whether mileage is priced in. Where a number climbs with your postcode, the journey has been folded into a line and the bidder can point at it.
Why organise by distance from the water?
Because the bay narrows the annual moisture swing and the swing is the mechanism. A property on Mustang Island and one at Alice face genuinely different conditions on the same regional clay map, and county boundaries do not track that at all.
Which group is worst?
Worst is the wrong frame. The inland towns have the widest swing, which also makes the cheap intervention most effective there. The coastal ones have less swing and more variability, which makes each individual lot harder to predict.
Every town covered, and what changes there
Each of these has its own page, because the ground and the housing stock are not the same across the region. The short version:
Port Aransas — Different ground entirely
Port Aransas sits on a barrier island, and barrier islands are sand. Read what that means for a Port Aransas property.
Rockport — Bay margin, and the bay moderates
Rockport sits on the edge of the water, and proximity to open water narrows the extremes. Read what that means for a Rockport property.
Portland — Up on the bluff, and mostly newer
Portland sits higher than much of the region and a good deal of it was built from the 1960s onward, which means slab-on-grade construction throughout and a fair number of post-tensioned slabs in the newer parts of town. Read what that means for a Portland property.
Ingleside — Housing built to a schedule
Ingleside’s growth has come in bursts tied to industrial activity on the channel, and housing built fast to meet a workforce demand is housing built to a budget. Read what that means for an Ingleside property.
Aransas Pass — Low ground, and it varies
Aransas Pass sits low and close to water on several sides, and the ground reflects that: clay in places, sandier material in others, and made ground where lots were raised to build on. Read what that means for an Aransas Pass property.
Robstown — The full clay experience
Robstown sits out on the flat where the mapped clays run deep and uninterrupted. Read what that means for a Robstown property.
Sinton — Farmland, and a long dry line of sight
Sinton sits inland among working agricultural land, well away from any moderating water. Read what that means for a Sinton property.
Alice — The far end of the gradient
Alice sits well inland, and everything this site says about the amplitude of the moisture cycle applies most strongly here. Read what that means for an Alice property.
Kingsville — Drier than Corpus, measurably
The NCEI normal for the Kingsville naval air station is 30.38 inches a year, against 31.76 at Corpus Christi International. Read what that means for a Kingsville property.
What it means when a town is covered
It means your request goes to one independent local specialist who serves the town, and many local specialists don't charge for the first visit; ask when they call. A good visit includes a laser floor survey, crack measurements and a written scope afterwards. Ask for any travel charge as its own line rather than buried inside the others, and to see that number before you agree to anything.
Foundation work is scheduled, not urgent, so a few days either way rarely changes the outcome.
These 9 communities are the ones this site covers, each with its own page on the local ground. That is the honest boundary: not a radius drawn on a map, but the places where the soil and the housing stock have been written up in enough detail to be useful.
Coverage questions
Is there an extra charge to come out to the outlying towns?
Ask for travel to be quoted as its own line when it applies, and to see it before agreeing to anything. It should not be folded into the price of the work, because a scope you cannot read is a scope you cannot compare against anyone else's.
My address is not on the list. Can I still ask?
Yes, and it is worth asking. The list is the area this site has written up, not a hard boundary. Send the address and the local specialist can say whether they cover it.
Is the first visit free?
Many local specialists don't charge for the first visit, but it depends on the company. Ask when the specialist calls, before they come out. Ask to keep the laser floor survey, the crack measurements and the written findings whether or not you go ahead, and whether or not the specialist ends up quoting the work.
Why does the price differ between towns for the same job?
Because the ground does. Each town page above explains what changes locally, and the quote follows what the visit measures at your specific address rather than an average for the region.
Book a Corpus Christi foundation assessment
Two things help most before the specialist gets there: roughly what year the house went up, and whether the trouble showed up during a dry spell or after heavy rain. On this ground the season it appeared in narrows the cause faster than the size of any crack does. You get a call back from a local specialist who serves Corpus Christi.