Consult eviction attorney regarding commercial; I'm specifically a residential PM and commercial usually has different rules because of the nature of the investment and occupancy (tenant doesn't [usually] live there)

Purchase price: $45,000 Sale price: $175,000 I lived here for a few years then when I was married it became a rental.

I live in Utah, where the real estate market has exploded to say the least through COVID, so investing in my backyard isn't something I'm interested in right now.I'm looking for a market with houses available to be renovated under $50k!

By no means cheap but solid rent + demand, fun place to live, decent inventory (relatively speaking), and is still commutable to the city. 

What's the difference between co living and shared housing?

But the issue you will have to live with is the fact that you will have to disclose this.

If you are eligible, you can buy up to a four-unit property with zero down as long as you live in one of the units.

A duplex to live in and easily able to exit out of it renting it 100%

and seating so buyers can imagine how they might live in the space.

If I were in your position, I would buy a duplex that has potential for value add, fix it up, live in one unit and rent out the other unit as a medium term rental or long term rental.