I had a half-vacant duplex I purchased where the upstairs tenants were doing their laundry and evidently the laundry for their friends/family as the washer and dryer (owned by the tenants) was running multiple times a week for hours on end when I was there rehabbing the first floor unit. 

The house needed some work but nothing too crazy, and we also did some upgrades to make it more desirable to a potential tenant/buyer down the road including adding central air and converting the half bath to a full bath with a nice tiled stand-up shower to make a full master suite and a 3 bed 2 bath home.

I will still spend half of my time in Peru. 

I decided to turn my 1/2 duplex into a rental. I still have mortgage on it. The unit next to mine is vacant & owner asked me last year if I wanted to buy it, which I do want to. But the problem is the owner wanted...

Having multiple accounts and credit cards means half your year end reports are done for you.

Online it says it may take 6 months to establish a FICO score I'd hope I could cut that in half at least. 

Handing over cleaning to the tenants for $100 when you didn't know the full scope of the job beyond "the place wasn't that bad."3. 1-inch filters that hadn't been changed for months or years.4.

LendingTree Survey: More Than Half of Homeowners Expect Home Values to Rise in 2020https://www.lendingtree.com/home/mortgage/half-of-homeowners-expect-home-values-to-rise-in-2020/

Within most MLS systems there is a way to specify "duplex only" or "triplex only", so it may be as simple and telling your agent that you aren't interested in any half-duplexes (please exclude those) and you'd really like to only see Du- and Tri-plexes. 

It's smart to keep the search hyper local, < half mile radius from the property.