This has been known for awhile. Houston overall is sinking. It's been a long standing problem because Houston is built on a swamp so most foundations literally float supported on soil pressure. As Houston has developed more this has affected the water table and also over development can reduce the soil pressure.
It is one of the reasons that MUD districts had to switch from well water to surface water a while ago. Also regional water authorities were set up and started skimming off the top double or even tripling everyone's water bill.
There is a new article on subsidence in Houston every... 6 months or so? https://www.chron.com/news/science-...-Houston-could-disappear-by-2100-17135116.php Dating back to AT LEAST 2013. It can be mitigated (has been in other countries) but not by American's. American's can only fix broken things (and make money off it) they cant actually prevent anything from deteriorating. You can pay a company to elevate a home from floods for example, but the city/state/gov/country isn't going to do ****. They just pretend money will come until you ****s forget. Lulz. GOOD LUCK
If you own a house built before 2012 (drought) in Houston, you have foundation issues. I feel bad for these foundation adjust companies that give lifetime warranties.
You shouldn't. The ones that don't go out of business know how to handle service work economically. And if the piers go deep enough, they are resistant to shifting (but it can and does happen over time). Often, you'll see part of a house sink before the other and the homeowner will only underpin that part of it. When another section starts to sink, that's new business, not warranty work. And - some companies may require drainage or foundation watering as part of the warranty. "Warranty" work usually winds up equating to about 10% of new revenue for home service companies. GOOD LUCK
Not to mention just how shockingly cheap it actually is to adjust a run of the mill slab-on-grade foundation. Most of these guys won't quote anything under $20,000 for partial underpinning and damn near $50,000 for full, and their cost of materials and labor MIGHT be 20% of that. It's a good racket to be in if you've got access to a reliable crew, and good marketing.
Average ticket on piering is less than $20,000, closer to half currently. Considering the current cost of things like doors and windows, stucco work, balcony repairs - I feel like that type of work isn't so steep (but it adds up QUICK on a big house). But agree that it's healthy margin. Easy business to start and run and make money, but most go out of business in 7 years (the ones with the "BAD" warranties or the ones that cant survive a downtrend in seasonality).