A half mile (air radius) in any direction will throw the comps WAY above where the Allentown market really is.

Also includes all appliances except clothes washer & dryer on both sides as well as air conditioners/furnace as you'd expect. 

. - Install two new high efficiency condensing boilers, and update windows and insulation for better heat loss performance.PROS - a) minimally invasive; b) can provide 15-30% reduction in heating costs (we are told).CONS - a)total gas expense is still paid by the landlord; b) individual units won't have individual control (except for a thermostat controlled shutoff valve for heat/water in each unit); c) AC would be available on with in wall/window units. 2) Try to individually meter each units' gas and provide each with a traditional forced air heating/cooling system.PROS: a)gas expense could be completely removed for landlord (huge)- even tankless hot water could be installed in each unit; b) each unit would have their own climate control.CONS: a) constructions costs of running new gas lines and soffiting sheet metal duct work. b) highly invasive with collateral construction costs; c) future costs of maintenance on multiple systems vs a single building-wide system. 3) An electric based heating system- This is tricky in my mind because of the high cost of electric heat.

my question I stay in the dc area and only do Air b and b or Coprate if you get a person that does not want to leave out of your unit it will take you close to a year to get them out due to the laws please chime in?

Lots of risk of fire plus smokey air if there is a fire can cause some annoyance to guests.

I’m active duty Air Force with retirement coming soon.I wish you all the best.

Virtually all basements are going to have water concerns, whether from high water table, moisture attempting to move from soil to concrete/concrete block to air, actual infiltration from walls, etc.

A house doesn't go from 70 to 50 in a few hours unless they open their windows to enjoy some fresh air.

I was looking at Air BnB but I am not sure if my property would be profitable. 

Tenant moved out 3 days after discovery into air-bnb that was 3 times rent and expected us to pay.