I think someone could make some money with this and it isn’t all that complicated in my eyes since it is similar to the gardening projects already out there. I live in Texas and most of Texas residential property is on “expansive soils” and that leads to foundation issues and much more. The product goal would be manage the moisture level around the home (18 inches from the foundation is recommended) during the summer/dry months. You can’t do much about upheaval during the spring but if a homeowner isn’t diligent they could cause major damage to their home in a single summer. It gets so dry and the soil then contracts, pulls away from the home which allows the foundation to flex or drift.
The challenge is simple, monitor soil moisture levels around the home at a reasonable interval and report/correct the issue. Most homes have sprinkler systems with Zone 2 purposefully left open for foundation watering system (which are excluded from water restrictions as long as they aren’t running off into the street) or open a valve on a soaker hose until the moisture level is appropriate. There is not magic moisture level target, the name of the game is to stop variance. In the northern areas where basements are prevalent a moisture level monitor that warns of excess water has value as well. All I ask is that I get a couple for me and my family and that you integrate with Rachio so I can use my open Zone 2 that your product would trigger.
I believe it is a good idea, fairly simple in systems terms and fills a real need.