On the bright side, they still get the job done at an acceptable level (for me at least). 

I bet the first deal stands out in an investor's mind, but what is one achievement, directly or indirectly, related to REI that you feel is your greatest achievement or the one you are most proud of.

We will screen those tenants with the same level of due diligence we screen any other tenant.  

Flippers shoulder the greatest burden because of the higher interest rates they usually pay using hard money or private loans.

The only similar experience I have is running a transit level and grade stick on building foundations and sidewalks. 

We operate at a much much smaller level.

If so it is the same level of effort as changing it yourself.As for charging service call plus repairs, again, I don't know how you can conclusively deduct that a system breaks down exclusively due to dirty filters. 

I have a 1940's , nothing level, nothing square , it was a well lets say "interesting" remodel .

I've lived in the Mid-West my whole life and a big part of that has been spent dealing with snow and I know Wisconsin is on a whole other level.

Regular retail rates per sq ft even for larger spaces rarely dip below 10 sq ft.I would question the quality of the area at such a level.