Welcome to the Nassau County Formal Solicitation Board. Rules Governing Public Foreclosure Auctions. 2.Instructions: Request to File Notice of Sale. 3. Welcome to the Online Vendor Bid Site for suppliers and bidders interested in bidding opportunities for the commodities services and technology contracts. It is the intent and purpose of Nassau County that this solicitation promotes competitive bidding. Bid on 5 houses around Nassau, lost out on all to "all cash offers". Anyone else having this issue? (c.) Each bid must be submitted in a sealed envelope with the bid number clearly. A certified check or a money order made out to BOCES of Nassau County. Sealed Request for Proposals for Post Disaster Debris.