OwnerSync CO Hub is a neutral collaboration workspace for institutional owners (REITs, universities, healthcare systems) to standardize and audit change orders across multiple GCs. Owners currently receive COs in dozens of formats, making it hard to compare pricing, validate entitlement, or roll up exposure at portfolio level. OwnerSync centralizes CO submission via API/email intake, normalizes line items to a master cost taxonomy, and uses AI to check each CO against baseline scope, unit prices, and past similar work. It then guides owner reps through structured review steps with rationale, while feeding approvals back into each GC’s native system. - Cross-project analytics so owners see which GCs and trades systematically overrun or underprice changes. - AI validation of labor/equipment/material rates against contracts, schedules of values, and regional cost indices. - Playbook enforcement so internal approval policies and audit rules are applied consistently, with full traceability. - Vendor scorecards based on CO frequency, negotiation friction, and schedule impact to inform future bid awards.