Depending on how you are going to purchase (cash, finance, etc) , what are you looking to do with the properties (fix n flip, rent and finance/carry back, rent and hold), depending on the volume...I would find two - three realtors who have the contacts with the bank REO departments and start your process.
I can highly recommend the following realtors in the metro Phoenix area to you for this.
Jennie Miller West USA Realty Phone: 480-382-9681
Troy Landrum - Canterbury Realty
Linda Booker ---Realty Executives
Richard Shelton--- ReMax
David Van Oman ---ReMax
They are all highly professional and can serve your needs.
I am a Mortgage Banker in metro Phoenix, AZ. I lend in both Arizona and California NOT Colorado but Pinnacle Capital Mortgage Corporation does have offices in Colorado and they will be pleased to help you.. If you or someone you know is looking for financing options, please feel free to contact me or pass along my information. 623-340-0934 Korene Clopine-Seaman NMLS # 218520 KLCSLoanTeam.com We are Direct Lenders, WE CLOSE LOANS!