I have personally stayed in one of these places where the main house is separated, and only the basement space which has a walkout entrance, its own kitchen, and two bathrooms would be rented out an Airbnb.

I've already renovated one of the bathrooms, and I’m planning to paint the interior, update the kitchen cabinets, possibly sand the wood floors, build a fence is a corner lot and increase the rent for the room since my tenant is currently renting the entire 3-bedroom, 2-bathroom house for $800 a month.

This place has two SFRs on a lot, needed both to be fully remodeled with AC placed, windows and a lot of other stuff.

Small windows, aluminum wiring, etc. 

Number of units, kitchens, etc.If these things were disclosed it would seem that things should be OK. 

"Ceiling fell in" turned out to just be drywall of the kitchen ceiling.

Fix your cabinet with the missing door, remove the stickers from the mirror and window, close the toilet lid, sweep and mop the floors, use a wide-angle lens, and take pictures from an appropriate angle. 

We put in two new baths, kitchen, and a nice landscaping package.

We finish a kitchen we do the same we get another 25%. 

Denver has a lot of older properties with value-add potential—small upgrades like fresh paint, updated kitchens, or even just better landscaping can make a big difference in forcing appreciation.