When an invitation to bid is issued, your firm would be contacted electronically. Prospective vendors are also welcome to visit our procurement department.Click on each letting date for contract details and documents. The Bid Sheets and other required bid documents are ONLY available in the full bidding package. Sealed DesignBuild bids shall be received at the offices of the Montgomery County Auditor,. Construction Contract and Related Documents. Learn about current bid and contract opportunities available to consultants, service providers, contractors, vendors, or suppliers. Click here for construction projects currently out to bid. Click here for Request for Proposal projects currently out for proposals. Solicitations and Contracts.