Celestia is the single source of truth for civil engineering projects — payment certificates, variations, claims, site records and the full audit trail, from bill of quantities to final account. A tamper-evident ledger proves every decision.
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Commercial control, site and technical records, and governance — built for the way civil engineering contracts actually run.
Bill of quantities, payment certificates, CPA escalation, variations, claims and cashflow forecasting — reconciled from tender to final account.
Site instructions, RFIs, NCRs, daily diaries, programme tracking and a visual progress tracker — the field record that backs every claim.
Role-based access, document sign-off and a tamper-evident, hash-chained audit ledger — so every figure and decision can be proven later.
No more spreadsheets scattered across drives. Every instrument is linked — a variation knows its instruction, a certificate knows its claim.
Load the BoQ, contract type (GCC/FIDIC), parties and programme.
Capture diaries, instructions, RFIs and NCRs as work happens.
Certify progress, escalate with CPA, assess variations and claims.
Sign-off and a hash-chained ledger keep an unbroken evidence trail.
Reconcile to a defensible final account, fully auditable.
One licence per live contract — unlimited engineers, site staff and client logins included. Solo, Base and Portfolio tiers, with the rate tapering as you add projects, plus annual prepay that pays for 10 months and gives you 12.
Spin up a private demo with sample data in seconds — no sign-up. Or send us a note and we'll walk you through it.
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