Each room has an exterior door and they all eventually make up the 4 bedroom.

Failed to maintain exterior walls of a building or structure from holes, breaks, loose, or rotting boards or timbers or any other conditions which might admit rain or dampness to the walls2.

The exterior has asbestos siding so risks of it existing inside are higher but there's no old tile/heating ducts. 

One of the other rentals has clapboard wooden exterior siding and window units for A/C.  

This was apparently accomplished.So far as I know;  no documentation has exchanged hands.My plan is to replace the rear sliding glass door with a 36" exterior door and a double-hung window to fill in the large opening.  

Any rehab on exterior will be very costly, including windows. 

Someone also mentioned they knew of someone else having a crane lift the existing trusses and roof and just adding block around exterior walls to raise height and then redo interior walls.

footage,  the year major mechanicals and exterior have been upgraded,  if there is a deck,  if there is a dog,. if there is a garage,  if you have had a claim,  if there is a fireplace,  natural gas or wood burning....  

Just simple exterior doors.

So far, I've sent out truly hand written yellow letters, just launched a postcard campaign using Every Door Direct Mail from the post office, setup two different websites and associated google adwords campaigns, and I also got 1 lead from my car magnet.