Travel nurses typically want 1/1 with washer/dryer and parking.

I'll cosign @Andrew Steffens  number though and I have ran furnishings either between $15-20 per square foot as a really rough ball park depending on location/style. 

For that part of CT, I ball-parked a reno like the image from gutted to finished to be at least $600k on the low side.

My point is sewer, fire sprinkler tests, parking lot, sidewalks, etc.  

Pueblo is currently recreational river area near City Park.

I just shy away from places without strong established tourism markets i.e. growing urban areas, national parks, beaches etc.

I use mine for storage of beach toys, drying rack for swim suits, storage of extra supplies and on occasion it’s an extra parking space.  

Montgomery County has specific requirements on square footage, parking, and permits for ADUs, so you'd want to check those out before making any moves on a basement conversion.If you're just renting out rooms in Montgomery County, you're good to go!

My brother once dated a girl who lived in class C and he told me their constant struggle was parking and trash cans.....

Consider all the things that could go wrong and see if the lease addresses them: unauthorized pets or tenants, early termination, security deposit, lease violations, late rent, eviction, lawn maintenance, parking, etc.5.