Currently, I have a good credit and we are working to increase his.

A sign of a poor area used to be lack of cars.  

I plan to get a 30 year commercial loan and my broker is telling me that 6.5-7% is more realistic for an interest rate using a complete underwriting process (3 years tax returns and credit check).

Long Term Option would be the best bet since the repairs aren't really for a major value add Loan Amount 187k Rate 6.7% (Depending on credit score) Origination 1.5 to 3 points30 Years Amortized 3 to 5 year fixed

In fact, I think it helps in terms building relationships with banks when you open accounts with them, especially when you are ready to apply for lines of credit or commercial lending.

I'm looking to get a line of credit on these properties.

Read "Rich Dad Poor Dad" and working my way through "Cashflow Quadrant" and the other books by Brandon are sitting in my queue.Currently struggling with deciding on an area to invest in, already decided to invest in b or c class, not sure about duplex or SFH yet.

They typically involve a requirement of a specific minimum credit score, maximum income, maximum purchase price, maximum debt to income ratio, and a requirement to take homebuyer class. 

We took out a home equity line of credit on our house and used that to purchase two rental houses.

Do you run a background or credit check or take a deposit?