The building has no house panel, so installation is going to be expensive any way you look at it.My question here is are the older battery powered detectors "grandfathered", or will I need to upgrade the detectors immediately.

If he is purely a lender, he will be paid via interest income and his tax breaks will come from his lending business, not the performance of the property.

Pure cash flow plays in flat or falling markets is one sure way to increase your risk and to lose the real opportunity of having your money work for you.

My tenant used a battery jumper cable end and an alligator clamp to run juice from the overhead wires and around the electric meter.

As I mentioned, I'm struggling to find guidance online for our particular situation since we own property, but it's purely a rental that we've never resided in.  

So, this is purely "HVAC 101".Where I live, the purpose of having them in the floor under the window is to keep the windows warm in the winter so they don't sweat/frost and the wood frames rot when the frost melts.

Pure cash flow :)

Your tenants love their homes and don't want them to be sold from under them...that's it, pure and simple. 

Originally posted by @Blake Broomer:good evening real estate community is it better to file your real estate holding company as an LLC, or Scorps  That purely depends upon what you are doing.

ie tenant is responsible for checking the smoke detector battery every six months..