Primary sources: where buyers post directly
AusTender Federal government portal ★★★
This is the central Commonwealth portal, run by the Department of Finance. It covers Australian Government opportunities, procurement plans, open tenders and awarded contracts. Registration and automatic alerts are free. Any business that can supply Commonwealth agencies, Defence included, must monitor it.
Visit AusTenderEstimateOne (E1) Commercial construction ★★★
This is the primary site for commercial construction packages. Builders use E1 to seek subcontractor and supplier pricing, not to repost government notices. It is especially useful for trades, subcontractors and building-product suppliers who want to get underneath the head contractor.
Visit EstimateOneICN Gateway Major projects ★★★
This is a direct major-project work-package channel, not a government-tender aggregator. Project owners and Tier 1 contractors publish packages here and seek supplier expressions of interest across infrastructure, resources, energy, defence and manufacturing. It is valuable when the real buyer is a project owner or head contractor rather than government.
Visit ICN GatewayVendorPanel Council and government panels ★★★
This is the primary source when the buyer issues its RFx through VendorPanel. It is strong for council quotations, tenders, panels and supplier discovery, with notifications by category and service region. It is now the backbone of the Queensland state and local transition. Queensland suppliers in particular should register.
Visit VendorPanel