As long as they remain uninstalled in the property, they remain personal property.

Still, real estate is different in that shelter is a necessity (versus say me selling pies, if I charge too much you can always buy cakes instead), which means that invariably government will be motivated to get involved.

I then compared them in a spread sheet, eliminated any that fell outside of my criteria and did a walk-thru of the remaining.

The property is not listed for sale and is not in foreclosure, but I contacted the out-of-state owners, and they are motivated to sell.

No Solar stuff, No Ham Radio antennas, No Flag poles, etc...If it were me, (to be tactful) I'd tell them it seemed like a good idea but my attorney advised against it, and leave it at that.That way you are not getting in to any kind  of perceived Political or environmental disagreement with them, and you remain the innocent middle man.Just my 2 cents.Good Luck!

Upon sale of the house, they will keep 400K and I will keep remaining profit.

Then buy at a discount because the owner is more motivated to get rid of it, add value through renovation, increase the rent and increase the cashflow significantly.If you do what 99% of real estate investors do, you'll get the results that 99% of real estate investors get.I think with 1,000 apartment units under my belt, I can modestly say I belong to the other 1% :-)

The situation is particularly bad in the city’s Northwest Core (Portland, Russell, Shawnee) and West Core (the remaining west Louisville neighborhoods), where more than half of all families earn 50 percent of the area median income (AMI), which is $71,500 for a family of four.According to the study, Louisville is more than 31,000 units (apartments, houses or other living quarters) short of being able to house all its low-income households.Part of this is due to the section 8 audit.

Do I calculate the interest payment on the entire 57k or on the remaining 45k? 

I need people to work with who are motivated.