How to access cash using existing equity

[Matt Sturm]

I have a SF rental property in Wilmington, NC. I am trying to do a cash out refi but am not having any luck. My issues are 1. My credit score is sub 700. 2. I am self employed. (Don't have W2 income)  I have talked to multiple lenders and keep striking out.  

The house is theoretically worth $225k.  My remaining mortgage is $90k.  How can I access some of this equity

Thanks for your suggestions!