Using Seller Financing For a Duplex Purchase

[Alan K Auman]

Hey everyone, I was hoping someone could give me the rundown on how seller financing works in regards to purchasing for investment purposes. I have bought multiple homes and have been on the selling side once so I'm pretty well versed on how the conventional mortgage process works. I've also invested in property using a 401k loan then payed it back with a cash out re-fi on said property so I'm not completely new to creative financing either. I think I have a pretty good handle on how seller financing would work if you were to use it for the purpose of a primary residence but I'm not quite sure I understand how it would work when using it for investment purposes. Here's the deal I'm curious about so if anyone can give me a quick thought on how they may approach this deal I'd be very appreciative:

Duplex listed for 69.9k

Tenants are terrible and eviction would be a condition of sale

Roof, gutters, and underneath the eaves (rotted wood)  all needs replaced which would also need to be a condition of sale

ARV: Probably somewhere in the 100k range....maybe 110k tops

Each unit currently renting for $600/month but could rent for $750/month if given facelifts

Home is in an A++ location...just a block up and a half a block over from the second best park in town. Surrounded by houses in the 250k price range. Shouldn't have a problem attracting renters

Both units are approx 1400sf and other than some cosmetic stuff they just need a VERY deep cleaning.

Home could use new windows but the current windows are functional

So how would you approach this deal? The sellers seem to be open to financing as they are getting older and just no longer want to deal with being landlords. You can tell they've given up by the way they allow the tenants to treat the property. Appreciate any advice.