Permit required to put in a thermostat?! un freaking believable. I would never submit to that. Just put the darn thing in
Does not matter, permit least of your concerns, he probably just put a corporate surveillance system in his house and did not even know it.
If it is one of those cool Nest or the more advanced Honeywell RedLink thermostats. They are reporting your private usage information to the power company, just like the smart meters that everyone has been strong-armed into getting. They sneak by the privacy laws with 'implied consent' and now have an open connection into your lifestyle. It is amazing what you can learn about a person/family by their power usage. Police are using the information to find grow houses, identifying home businesses to enforce business licenses, and other things. Plus the power company makes money selling your personal information to third parties!! All of this without you even knowing or worse agreeing to it in a normal manner.
Welcome to the sell your private information age