How To Refinance 10 SFH Commercial Portfolio Loan

[Jonathan Small]

Hello BP community. I bought 10 single family homes last month. All houses have tenants. Total rent is $10,300 per month. The appraisals equal $1,080,000. 

My purchase price was $860,000. I put 20% down which was 170k. My remaining balance on the 80% loan is $690,000.  I have 760+ credit.

Current mortgage is 3.7% for 35 months amortized over 20 years.  

I am looking for names of mortgage companies that people have used to refinance this type of loan. I am looking to refinance into longer lower interest debt.

Thank you for your help and feedback.