Built by a working Civil Engineer
Your contract administration assistant.
Gnosis runs the variation maths, drafts the certificates, and routes approvals — for civil engineering contracts under NZS 3910, Australian and US frameworks.
14-day free trial · No card required · Cancel anytime
How it works
Drop in the work. Confirm the result.
Three steps to get from a contractor’s Excel to an authorised Certificate of Payment or Variation Order.
Drop in the file.
Drop your contractor's payment claim Excel or variation breakdown. Gnosis reads the columns, matches the Schedule of Rates items, and pulls every figure verbatim from the source. Multi-sheet variations are grouped automatically.
Gnosis does the maths.
Retentions on the right bands (10/5/1.75% under NZS 3910). Fluctuations applied. GST or Sales Tax at the right rate for the contract's jurisdiction. Variation buildups clause by clause. Certificate of Payment generated with the CCA 2002 Form 1 statutory notice for New Zealand contracts.
You confirm.
Review the working. Send for approval. Magic-link your Engineer or external reviewer if they're not in the system. Lock it. Done.
What it does
Six things Gnosis takes off your plate.
The contract administration work that legally drives the project. In one place.
Variations
Extract from any contractor Excel. Buildup by NZS 3910 clause. Authorise within your delegation. PDF on demand.
Learn more →Payment Claims
AI-extract, retention bands, fluctuations, CCA 2002 statutory notice. Issue the Certificate of Payment.
Learn more →RFIs, Notices, NCRs, Transmittals
Four document streams in one place with categories, attachments, and approval workflows.
Learn more →Approval workflows
Reviewer-aware. Sequential. Mix teammates and external firms. Magic-link anyone who isn't in the system.
Learn more →Schedule of Rates
Import from any contractor Excel. Item Groups, Separable Portions, base value snapshot. Lock-aware editing.
Learn more →Reports + PDFs
Variation Orders, Certificates of Payment, SoR summaries, Contract long-form reports. NZ/AU/US terminology.
Learn more →Currently in early access in New Zealand. Australian and US contracts supported.
Built by a working Civil Engineer with 27 years across Greece, the UK, New Zealand and Australia — including the Waikato Expressway and other major infrastructure projects.
Your project could be one of our first 50. Read the founder's story →
Pricing
Pay for active contracts. That's it.
One price per active contract. Stop paying when you archive the contract. Currency auto-detects to your locale.
Drop in your next payment claim.
14-day free trial. No credit card to start. Cancel anytime in your Stripe portal.
