I have just always wanted to have the tenant have some ownership in what they use, as all too many times I see the thermostat set at 80F in the winter, with the open window used to moderate temperature!!

Keep in mind that not all mold is actually toxic and/or dangerous.I had tenants worried about "mold" that oddly appeared around a thermostat and the outlet below. 

The heater will produce the same amount of heat, whether there's an extra vent in the hallway or not, because it will react to the temperature in the room where the thermostat is and that would not be changed by that extra vent.

When i was working on the financing the underwriters at the bank, a large one, i use on my primary residence  said they couldn't finance the property because it didn't have a thermostatically controlled heat source in every room...I worked with a local bank and got into a 3 year ARM.The cabin is 600sq feet and has a living area, kitchen, bathroom and bedroom.  

Hard living was the term used by our insurance company; entire house carpet had to be replaced (see image and imagine 1700 sq feet of that), walls & doors were used as children's personal canvas which resulted in repainting & staining of entire house, closet doors were off &/or damaged, siding was hanging off of the outside of the house in several places, thermostat removed, gas meter removed due to illegal gas consumption, drawer/door hardware missing or damaged, damage to garage doors, etc.

I have no idea.He also wanted to throw in a new thermostat "at cost and no labor" for $40.

Most of the requests are minor (sink is plugged, thermostat isn't working), there are just a lot more than I planned on.Maybe 14% is the right number.  

(Lock box on thermostat)

List of upgrades includes but not limited to:New natural gas heating system complete with new panel heaters and thermostats throughout the building. ($25k)New domestic plumbing throughout ($4k)Wiring upgrades including new meters and service entrance to accommodate new W/D hook-ups in all units ($15k)Installed 2nd driveway, 20' x 37' ($3500)24 new windows ($7200)Gutted and replaced kitchens and baths in 3 out of the 4 units.Refinished all hardwood floors, painted all units, fixed repaired trim, and all interior and exterior cosmetics.4 new sets of appliancesBEFORE                                                                                                               AFTER

Everything from using a NEST thermostat and keyless entry, to artwork and furniture that represents our style.