I rent my 600 square foot two car garage building for vehicle storage and it's been great.

I am based in New England. 30,000 foot view of my model is  to identify underutilized/value add opportunities and raise capital on a deal-by-deal basis (multi-family, industrial and self-storage).

There's some insulation between the upper floors and basement, but it can noisy if there's a ton of foot traffic upstairs. 

I'm very interested in short term rentals but I'm working on getting my foot in the door with wholesaling first.

Nothing thrill me more than painting a verbal picture through a listing or being able to sell the home through the photos before you end step foot in the house. 

The Michigan guide says one bedroom occupant per 50 square feet, which means in a 10 foot by 10 foot bedroom, you would have two occupants.

Find some comps with installed solar and see what they sold for per square foot. 

The history here is that when I bought the 3-family property 2 years ago in Chelsea, MA, the condo association for the property next door forced the previous owner of my property to move her fence about a foot so that they could park an extra car on their end. 

Estimating rehab cost - You can use price per square foot cost or you can go line item by line item to estimate all the repairs needed.

Long story short if you have a few minutes, call some builders and ask what their price per square foot is for a similar build, then figure out your square footage.