I listened to someone speak about your business "flywheel" which multiplies the torque to the powertrain in a car transmission to take high rpm at the motor and turn it into powerful, high torque lower rpm at the drive shaft and then wheels in a car.

Rightly or wrongly.Aside # 1 - Reassessing the Fed’s EffectivenessInterestingly, the theme for the Fed’s Jackson Hole meeting was "Reassessing the Effectiveness and Transmission of Monetary Policy in a Changing World."

This should cut down on the transmission of sound from above.What I am not sure about how well it does with impact noise from kids running around but it is a standard in home theater builds to isolate the sound/bass coming from the theater to the rest of the house.

They reduce noise transmission, improve tenant comfort, and feel more substantial than hollow-core alternatives.

It's very much real-estate related as finding the 20-60 acres to build a solar facility near a transmission line with adequate capacity is job #1.  

Companies like Neptune or Boks Meter offer submeters with built-in cellular data transmission, ensuring consistent usage tracking without relying on tenant-maintained routers.

Additional Tips:Resilient Channels:Install resilient channels beneath the floor structure to further reduce noise transmission.

In the listings, we made it very clear that you are NOT renting the whole place, and noise transmission was possible, both in the descriptions, messages, and photos.

Mass loaded vinyl (MLV): Apply a layer of heavy vinyl sheets directly to the wall to block sound transmission.

In my experience apt. conversions from single family are more prone to noise transmission.