Soil conditions are a big factor in Texas. But, the builders these days go to great lengths to do soil samples specific to a lot rather than random testing across land to be developed. That way, the foundation can be optimized specific to the test findings for that lot. I just had a conversation with Darling Homes about that at the opening of their new neighborhood in Frisco, Newman Village.
If you are concerned about foundation on a specific resale home, there are firms that will come out and measure the home in each room, so you have a starting point for comparison. Keep in mind that no slab is perfectly level from the start. Some settling in the soil is to be expected because our soil is more clay-based in some areas than in others. But, this is incorporated into general home maintenance. A watering schedule can help, as can periodic walks of the house to ensure there is no exposed or cracked slab.
I lived on the shores of Lewisville Lake for 9 years. We were told that because of underground water, there was a higher than normal chance of foundation issues just because of where it sat. What we didn't know as young buyers was that there was a slow plumbing leak from the time the home was built. The water from that leak pushed our foundation up, causing our 3-car garage to separate from the main house. Yikes. We had 3 structural engineers and a plumber come out to analyze the house, all of which stated the problem could be dated to the time of the build. So, the fight was on with the insurance company. It took a year of battling, but insurance covered the entire foundation repair (60 piers every 8 feet inside and outside of the home). Olshan Foundation Repair did the work in 3 days. They were wonderful! We replaced all the flooring in the home when that work was done. Insurance didn't cover that, but we got off with the easier of the repairs. When I sold that home because we outgrew it, we got top dollar because the work had been done and the warranty had a lifetime policy from an established company with a great reputation. It was actually a big positive to the agents and buyers in the area that all the work had been done for them. My price per square foot on that home still holds as the highest in the last 3 years.
Come on down to Texas and don't let what you've heard about foundations scare you off.
Have a blessed day!
Realtor, Life Coach, and Certified Purchasing Manager
RE/MAX Dallas Suburbs