Lease Proposals Request for Lease Proposals Lease proposals are posted on through the state Interactive Purchasing System portal. Only electronic responses through that system will be accepted for these solicitations. Finding Proposals Opportunities: All bids can be found by looking on the State of NC Interactive Purchasing System's Agency Solicitations page, then click on the State Property Office link near the top of the list. To bid click the eBid button. For Help with NC BIDS: For additional information, the NC BIDS for Vendors page includes online training videos and a link to NC BIDS FAQs for Vendors.