@Joshua McMillionI just don't see the growth potential for Decatur that others do. 

This will get you a better idea of the potential fair market value of your home.

Minus potentially a small discount since it's an ADU?

Here are the specifics on the unit:Large Hangar For Sale $197,500 Hangar Size: 4,125 SF (55' x 75'), Construction: Steel hangar fully insulated with efficient natural gas heat.Lot Size: 0.19 Acre (8,125 SF) of leased landZoning: AIRPORT-L, M1-L,OSPR-L, PF-L23 years remaining on land lease.Hangar has an office, shower, gas heatSingle lift hydraulic 53' x 18' door200 amp service

There shouldn't be double taxation because rental real estate normally operates at a tax loss.The potential time that there will be a tax consideration is when you sell the property.However, your resident state(MN) will provide you a credit for taxes you pay to a different state.This will avoid double state taxation.In general, California state taxes are higher than Minnesota state taxes, therefore, you will be paying the higher of the two state tax rates, which is California.

I know I will find answers if I keep reading and exploring, but I have a potential deal going right now, so I need the answers sooner rather than later.1.

However, every time a showing is scheduled the place is so messy that it is impossible to get inside without tripping or potential injury.

My markets are very difficult I'm finding, even when looking at potential fixer-uppers, the numbers just don't work.

While it's not common for lenders to invoke this right if payments are being made on time, it is a potential risk that both parties should be aware of.Does the Buyer Need Their Own Bank?

If it's in decent shape, I would do a couple upgrades to appeal to potential homeowners (adding window shutters or bark mulch outside, an accent wall, nicer light fixture in living room, etc. etc.)