I have crazy high DTI (like 80 to 1) but large reserves, crazy high credit scores, and fairly small revolving credit card balances ($20k to $30k but paid off each month). 

:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+ (roughly 5% probability of default), zero evictions in last 7 years.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680 (around 10% probability of default), some blemishes, but should have no evictions in last 5 yearsClass C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.

I have spent countless hours trying to figure out how to buy properties with no income, no down payment, and a 700+ credit score from a student credit card with $10 payments on time.

I have 0 debt, and a 770 personal credit score.

My current credit score is ~770 4.  

Yes, we still sometimes end up with appraisals that are significantly “off”, but, those tend to be “off” by lesser amounts and most are at least somewhat reliable.  

Maintain a good credit score, budget, and stay informed about market trends.

Or do you have one flat rate so long as the paw score isn't 0?

For example, drop the price to $1,500 but require a credit score of 700+ and a double deposit.

Some of the projects were with a local partner as well and then the managing chores were split between us.The lending perspective was stiff in the beginning, as I didn't have any experience at all, also no credit score, and that project was only by myself, so the leverage was low, but I could work on a low-price property to start.Fast forward 5 years, I have built a credit score with 2 credit cards under my ITIN of more than 650, and done 4 properties as experience.