Department Of Shared Services Office of Purchasing and Solicitation Boards


The Department of Shared Services Office of Purchasing provides bid solicitation services to all County departments and manages the County’s formal and informal bid solicitation boards. Nassau County is committed to offering a transparent, efficient, competitive, and inclusive procurement process open to all vendors interested in doing business with the County.  We ask that all vendors register at no cost by visiting this site.  Registering as a Nassau County vendor will enable you to download and respond to County solicitations, and identify specific commodity categories you offer to receive email notification of relevant solicitations.

For Formal Solicitations issued prior to 12/8/2021 please click here to view open Formal Solicitation Board  (solicitations with estimated cost over $10,000) 

For Formal Solicitations issued on or after 12/8/2021 please click here to view open Formal Solicitation Board

Please click here to view open Informal Solicitations (solicitations with estimated cost of $10,000 or less)

Purchases are subject to NY State Municipal bidding law and Nassau County Charter requirements, which require the following:

  • Purchases under $500 do not require competitive bids. Only one recorded quote is required. Additional quotes may be requested if the Buyer deems it appropriate for savings potential.
  • Purchases $500 to $2999 require three informal competitive bids. The Buyer must obtain and record at least three quotations.  The bid is posted on the informal bid board.
  • Purchases $3000 to $10,000 - The Buyer must obtain and record at least three written quotations from the vendors.  The bid is posted on the informal bid board.
  • Purchases greater than $10,000 - The Buyer must prepare a Formal Sealed Bid which has a separate set of compliance rules requiring strict adherence. The sealed bid is posted on the formal bid board and advertised in Newsday.
  • Vendors generally are given a minimum of 5 days to respond to informal bid solicitations.  Most formal bids provide at least 15 days to respond.  Vendors are advised to consult the specific solicitation for the response due date. Sealed bids are opened publicly at a precise, prescribed time and location. Other procedural requirements may apply as stipulated in the specific solicitation.
  • The lowest responsible bidder is awarded the purchase order or contract.

There are exceptions to the Formal Sealed Bid rules for other types of solicitations, including but not limited to, documented sole source solicitations, and New York State Office of General Services contract items or services.

Purchases of $100,000 or more must be presented to the Nassau County Legislature Rules Committee for approval unless ordered under NYS contract authority.