A special thank you @Ruth Lyons. you're the closest I've come to getting the answer!

You are still going to run comps just as you do single-family homes, but if there are no multis close by you just keep expanding the area until you find the closest 3-family comps and adjust accordingly for your neighborhood compared to theirs.

The closest comps to this size of place are in the new apartments in this area ... 2/2 apartment ranging from 2500-3000

Im based in the Bay Area, CA and work as a Software Engineer for a Self Driving company called Nuro (check out our on-road delivery bot, it’s pretty cool)I’ve been getting educated over the last few weeks on the podcast and the forums, and over the next 90 days I plan to acquire my first property to flip with some of my closest friends.

Conventional home loans are the closest thing to free money as there is. 

I needed a comp to see what the closest 5 bed, 3 bath .17-.19 Ranch with finished basement was going for.

I would use the closest as possible and determine interest by putting it out there.

Find those that are closest to your property and search them month by month to see what their rates are and how booked they are.

The closest to a "home run" I've ever had was probably 9 units seller financed that cash flow like crazy.

The closest I came was on the multi family which held me in a first back up position til closing.