Construction material procurement software for self-performing commercial contractors and specialty trades, including concrete, plumbing, mechanical, electrical, and drywall. SubBase runs one continuous workflow from field request through RFQ and vendor leveling, purchase orders with cost coding, delivery tracking, and invoice reconciliation, then syncs to your accounting system or ERP. Three-way match runs automatically by line item, so discrepancies between the purchase order, delivery ticket, and invoice surface before they reach accounts payable. Field teams submit and track orders from the SubBase mobile app, instantly updating budgets. Vendors participate free, with no software to buy. Contractors report 40 to 70% fewer errors and 30 to 50% time savings.