I'm surprised no one has mentioned this, but you can get loans and buy car washes in your town, self storage, stores, restaurants and so on.

I also try to identify if rent includes utilities, laundry, storage and parking as those have real costs and I try to figure out the tenants total out of pocket3. 

I don't know the type of lease but I would suspect a mini-storage lease would be a good place to start.   

If I move into the duplex I could rent the other unit for $1800/month and rent other assets on the property (office space and rv/boat storage garage) for $500.

@Brooke O'Bryan-Commercial flooring installer here.Is this a living space or just a typical basement for storage and utilities?

I own a Self Storage in College Station,TX , STR in Fredericksburg,TX and a small MHP, that will convert to a 'tiny home park' [ park model RV park to be precise with some smaller single wides] in NWArkansas- Fayetteville-Bentonville Area

All will appreciate the extra storage, and it will help them get rented, but it isn't a big financial difference one way or the other. 

You won't probably get it, but you should get a substantially reduced rate (below the studio rate) and free storage for the rest of your stuff.  

I’m a commercial lender at MetaBank and have a storage facility with another one in development.

In my case, I have residential rentals in one LLC, commercial properties in another, self storage in a third, and my real estate company operates in a fourth.