Contact Sierra Auction

Sierra Auction - Arizona's Largest Monthly Public Auction is committed to serving our customers with the best service and care available. Please use the form below or contact us directly if you have any questions about Sierra Auction or our services and we'll get back with you very soon.

Please fill in all required * fields so that we may better assist you.

PLEASE NOTE: If you are having issues bidding or problems with your Proxibid account, please call Proxibid at 1-877-505-7770 for assistance. You can also email to get answers about questions or issues with your account. Check out our FAQ Page for answers to our most asked questions.


Phoenix Office

  • 3570 Grand Ave. Phoenix, AZ 85019
  • Phone: (602) 242-7121
  • Fax: (602) 246-1903
  • View Map

Tucson Office

  • 3911 N Highway Dr, Tucson, AZ 85705
  • Phone: (520) 882-0111
  • Fax: (520) 882-1553
  • View Map

Business Hours

Phoenix Location

  • Monday-Friday: 8am to 4pm
  • Saturday (Auctions Only): 8am to 1hr Post
  • Sunday: Closed

Tucson Location

  • Monday-Friday: 8am to 4pm
  • Saturday: Closed (Auctions online ONLY, 1st and 3rd Saturday)
  • Sunday: Closed
  • Preview Day (Friday before Auction): 10am-4pm

Useful Links