Fine Homebuilding ran several articles about installing long-term sensors inside walls in various places around a house that could potentially be troublesome. T

Fine Homebuilding ran several articles about installing long-term sensors inside walls in various places around a house that could potentially be troublesome. This was a year or so ago. These sensors (humidity, moisture, temperature, etc.) continuously reported their measurements to some sort of service the homeowner and builder could keep an eye on for any irregularities. The sensors were pretty low cost, if I recall; a few hundred dollars altogether. But its definitely not a common practice.