When you say 'legal one family', do you mean that it is zoned for single family residential?

And is it a route that you would recommend?

I'm in Columbus Ohio. this mostly applies to 2-4 units used as Airbnb properties within 2 miles of urban core  I have a few friends in Columbus. most do MTR now.

it is mostly from what I've been seeing in activity in my STR, and in talking with some friends who manage restaurants.

Of course, I also calculate ROI, but I wanted to make sure I’m looking at the right metrics.Since I only do hard money lending, my structure is pretty simple—loan disbursement, monthly interest payments, and fees like origination or exit fees.

And do you use a mailbox outside?

What lenders do you recommend to work with to access the equity in my duplex and how do I go about purchasing another property and not paying the 20-25% down.

It's no guarantee but it's a good place to start.

I would do between 50-100% or original deposit amount. 

The unfortunate reality is that the BRRRR book made a lot of sense when it was published, but with the high rates now, BRRRR is much harder to accomplish.