Built for builders.
Built around structure.
Datum helps builders track project costs accurately — from budget to purchase order to invoice to progress claim — using a proven Cost Sequence Index that keeps everything aligned.
One cost structure. Every part of the project.
The Cost Sequence Index (CSI) is a standardised categorisation system that flows through every workflow in Datum. When your budget, POs, invoices, and claims all speak the same language, nothing slips through the cracks.
Budgets
Allocate costs by trade and subtrade. Import or enter manually. Lock versions and track variations.
Purchase Orders
Auto-coded POs that match your budget structure. Draft, submit, approve — all tracked and auditable.
Invoices
Attach invoices to POs. No guesswork on what's been paid or what's outstanding.
Progress Claims
Track work completed against budget. Consistent calculations every time — percent complete, cost to complete, variance.
No more spreadsheets. No more guesswork.
Most builders are managing costs across emails, spreadsheets, and memory. It works until it doesn't — a budget blows out, a PO doesn't match an invoice, a claim gets disputed. Datum gives you a single source of truth for every dollar on every project.