They seldom held cars, but were used as storage units. 

I am interested in single family rentals and building and renting a storage facility.

The apartment offers hardwood floors through out, huge master with its own bathroom, central air, storage space, and a balcony.

Common amenities in these luxury apartment buildings include high-end rooftop decks, pet-friendly options, bicycle repair and storage rooms, shared co-working spaces, and tech-focused lobbies.

I made some money selling items, but in the end had a LOT of things to deal with. 2 30 yard dumpsters, 2-3 dump runs filling a truck, and now have a couple tables, dressers, couch and such littering my storage trailer and at my house.

Cap rates vary by area, asset class, and deal size.So you need to be specific (office,retail,industrial,hotel,self storage,etc.)

I have enough furniture in storage to furnish this house, so we will rent individual rooms until spring, then we will get the entire house re-rented for May.You can always pick-up individuals during the school year ... those who land at university as a foreign student or late admission are around for another 2-3 weeks.  

For example, he pays August rent and rents a storage unit.

Some rent for storage. 

75 - 300 / sq' , i couldn't tell you, are you building a storage shed or a house with quartz or granite counter tops, marble floors in foyer / baths and decorative tiles in the baths, stained hardwood trim, custom kitchen and decorative trim throughout the house ?