Developers I know have a contract in China with shipping containers to build storage unit parks.

A finished lower level with 9' ceiling and 8' drop ceilings, big open living area, "kitchen" area, storage area, full bath, and full bedroom.

Frame a storage area in the basement that can add a reason to a marginal rent increase.  

.), and I suggested that the agent use the term "storage closet" as he opened the door for the appraiser. 

-Storage units Small closet size or even garages.

We add dishwashers, central HVAC in everything we rehab, and try to add some other nice feature when budget allows - full fenced in yard, for example, or nice storage shed, something like that. 

self storage maybe 

Find a local small contractor that specializes in water damage and get them to bid the project making it crystal clear that it's you paying and not the fat wallet insurance company.

Bedrooms are small and no in-room closets (has large-ish hall closets and attic storage however), one of the bedrooms is a walk-through.

One thing I want to negotiate in the deal is a small concrete building used for storage that is owned by an adjacent land owner that the current owner knows they are willing to sell.