What is the current average rate for seller financing with 15-20% down payment?

I’m a strong believer that you will become the average of the 5 people you talk and hang around the most!

I am looking at a particular market that is very similar to Sparks Nevada PRE Tesla (in a state in the Eastern seaboard) that has a new High Tech employer moving (actually building a new plant from scratch) into area and is projected to bring 3200 high tech mfg jobs to area.I for example can buy Single Family in this area today while prices are still reasonable but would not be able to raise rents above the current local rent average until time that the new Tech Company's plant is up and running and employees have relocated to area from California.

Properties average 40% LTV on 1st mtgs.

@Stanford Walker There won't be much of a difference in how your property is appraised as compared to an average property in the same neighborhood.

Lubbock is a steady market with more average appreciation but more immediate cash-flow.

However, they are general in average or worse condition.

In this neighborhood, I'm also expecting appraisals to average higher over the next 5-10 years as well.

At an average price per SFH of $64k, this appears to be a zero appreciation market (meaning appreciation historically is less than inflation).  

Essentially, is there a rough time frame that it will take me to get to 50% occupancy, 60%, 70% or whatever the average is for well-run, self-managed properties?