ya that's basically mission impossible under the scenario you outlined.There is a lady I know from Oregon and this was her and her moms experince.They bought a duplex  ran that for a few years sold and bought a 4 plex ran that for some years then they were able to buy a 8 unit  then next step was a 20 unit. 

Washroom bring your own washer/dryer(currently).    

Ever provided a fridge/washer/dryer?

Provide washer/dryer?

They fail more than non GFIs and when one triggers I want to identify it as easy as possible without needing to check additional GFIs (ones that are unnecessary if the circuits were mapped).If you only wanted the portable dish washer and were fine with existing outlets, you could swap outlet dishwasher was plugged into with a GFI in less than 30 minutes. 

The winning bidder changed out flooring, fixed up the kitchen a little, installed new washer/dryer and then leased it up.

Redid the deck railings, refinished the deck surface, repaired various small things and did some exterior paint work.The new washer and dryer were depreciated as was the dishwasher.

A roof, furnace, stove, washer/dryer etc..

Would need new floors, cabinets, stove, fridge, installing a ceiling in the kitchen (currently a drop ceiling), trim, and running a water line to be able to install a washer/drier. 

They have a huge service department in Boston and they track each and every repair on all appliance types and brands and keep it updated so you can get a real feel for the best choices.For those folks who have small STRs with limited space, the LG Washtower could be a good solution for installations where you can't vent the dryer and have a small area.It wouldn't be for a larger place like ours but for a 1 or 2 bedroom place, it could be a good solution if you don't currently have a washer/dryer.https://blog.yaleappliance.com/lg-compact-washtower-review?