Bids are generally submitted in the county's electronic bidding system, Supplier Portal. Find information about contracting with Hennepin County, including processes, forms, and diversity rules for goods and biddable services.The Bidding Requirements consist of the Invitation to Bid, Instructions to Bidders,. Please fill out and upload all required document(s) as outlined in the Bid. Failure to submit required document(s) may cause County to reject a bid. Bidder must provide one (1) copy of the Proposal form. Bidder must only submit bid information in the designated areas of the Proposal form. To help you make your request, you can use our sample request form (PDF) View. 2. The sheriff's office will inform you of the redemption amount. Each invitiation to bid is posted on our website and can be found under the section titled "Current Solicitations".