I want to replace the ugly ancient cast iron radiators with modern flat wall mounted units. 

(single story) With that being said the modern new construction self storage should be a minimum of 50,000 sq foot to be economical.

Newer modern 4bedroom  house ect.

Over the next three years, we will invest approximately $4-5k to update the units to modern expectations, and be able to see a healthy rise in rent and reduction of time to fill.

I have seen some really nice ADUs built nowadays (2 stories with balconies), modern, each with own utilities (even water).

Zoning as it is today is a fairly modern phenomena and in the not too distant past what could be build was what an owner decided was best (over simplification but somewhat valid).

Making small updates to make it a little more modern and functional.

Glamping is a portmanteau of "glamorous" and "camping", and describes a style of camping with amenities and, in some cases, resort-style services not usually associated with "traditional" camping. domes, yurts, cabins without modern amenities…the ones you see empty on vrbo and Airbnb in the smokies right now and listed on marketplace for sale. 

Purchase price: $370,000 Cash invested: $80,000 1966 split entrance3/12,946 sqftLarge home in a fantastic area of Salt Lake City.Property has been neglected and in need of a total remodel.Investors will add a master suite in the lower level as well as modernize the flow.(4/3) 1 total bedroom and 2 bathrooms added Should be completed in under 6 months!

I know that many modern LVP products are marketed as waterproof.