Compare · VIABUILD vs Buildsoft Cubit
VIABUILD vs Buildsoft Cubit
Both are Australian, and both cover estimating and takeoff. Buildsoft Cubit is a focused, long-established estimating and takeoff tool where the estimate is the finished output. VIABUILD is the Construction Operating System, one connected system where that same estimate flows into budgets, purchase orders, cost control and progress claims, with Oryn intelligence built in. Here is the honest difference.
Verdict
VIABUILD fits if you want one connected operating system for the whole job, where the estimate becomes the budget and a number entered once flows into POs, cost control and progress claims, with Oryn reading invoices and plans, all at a flat price. Buildsoft Cubit fits if your priority is deep, dedicated takeoff and estimating on one canvas, the estimate is the output you care about, and you are happy to hand that number to separate systems for budgeting, procurement and cost control.
Published pricing. VIABUILD: $555 a month for the whole platform including three users, additional users $65 a month, AUD inclusive of GST, month-to-month with no lock-in; seven days free, then a first month at $299. Buildsoft Cubit: Confirm current pricing and licensing with Buildsoft, including per-product and per-seat options.
Connects to Xero? VIABUILD: Yes. Native two-way sync: approved bills and progress claims push to Xero with tracking categories applied. Buildsoft Cubit: Integrates with Xero for accounting; verify the current scope of the sync.
Buildsoft Cubit facts checked 3 September 2026 against the vendor’s own pages. Last reviewed 9 September 2026 by Brad Caldon, founder.
01 / Fair positioning
Choosing estimating software in Australia
Buildsoft Cubit is a well-regarded Australian estimating and takeoff tool, part of the Buildsoft family alongside Cubit Estimating and Cubit Select, and Buildsoft has been in the AU market for a long time. Its strength is doing takeoff and estimating on one canvas: your plans, your takeoff and your estimate in a single view, with measurements flowing straight into the estimate. For estimators, quantity surveyors and builders who live in the tender, that is a mature, capable tool.
The scope question a builder is really asking is this: do you want a focused estimating tool that produces a priced estimate as its output and then hands that number off to other systems, or one system that takes the same estimate and runs the rest of the job with it? That is the honest line between these two, and it is worth drawing fairly because they are good at different jobs. Plenty of estimators would happily run a dedicated takeoff tool.
VIABUILD covers estimating and takeoff too, but the estimate is not where it stops. It is the Construction Operating System for Australian residential builders: estimating, procurement, scheduling, cost control, progress claims and the ViaSite field app in one connected system. A quantity you take off once flows straight into budgets, purchase orders and claims, with zero double entry. The estimate becomes the budget, the budget drives the POs, and the actuals report back against it, so nothing has to be re-keyed into a separate tool.
The second difference is Oryn™, the intelligence embedded across every module. Oryn reads the plans, extracts the supplier invoices, codes the costs, drafts the claims and flags the variances. It powers accounts payable, a dedicated inbox where Oryn extracts, PO-matches and codes supplier invoices for one-tap approval. Both are Australian and both work with Xero. The choice is whether you need a focused estimating tool where the estimate is the deliverable, or one connected operating system, with embedded intelligence, that carries that estimate through the whole job.
02 / Best for
Which one fits your business
VIABUILD is the better fit when…
You want one connected operating system for the whole job, where the estimate becomes the budget and a number entered once flows into POs, cost control and progress claims, with Oryn reading invoices and plans, all at a flat price.
Buildsoft Cubit may suit you when…
Your priority is deep, dedicated takeoff and estimating on one canvas, the estimate is the output you care about, and you are happy to hand that number to separate systems for budgeting, procurement and cost control.
03 / Side by side
The differences that matter
Workflow, pricing philosophy, AI AP, estimating, scheduling, Xero, AI agent connectivity and Australian fit, compared dimension by dimension.
| Dimension | VIABUILD | Buildsoft Cubit |
|---|---|---|
| Category | A Construction Operating System: one connected system where a number entered once flows everywhere, from estimate to claim. | A focused, established estimating and takeoff tool where the priced estimate is the finished output. |
| Takeoff & estimating | Oryn digital takeoff and pricing, built to stay fast on large plans; quantities flow straight to budgets and POs. | A core strength: takeoff and estimate on one canvas, with plans, measurements and pricing in a single view. |
| Embedded intelligence | Oryn is built into every module: it reads plans and invoices, drafts claims and flags variances. | Buildsoft offers AI estimating tools; confirm current scope and whether an intelligence layer spans beyond estimating. |
| Accounts payable | Dedicated accounts inbox: Oryn extracts, PO-matches and job-codes invoices for one-tap approval. | Not a core workflow of an estimating tool; the estimate hands off to your accounting system. |
| Scheduling | Task-based, goal-driven schedule with real dependencies, milestones and baseline tracking. | Not a core workflow of a dedicated estimating tool; confirm current capability with the vendor. |
| Cost control | Live budget vs committed vs actual with Oryn variance alerts at 2%, 5% and 10%. | The estimate is the output; live budget vs committed vs actual typically lives in a separate system. |
| Progress claims | Progress claims are part of the one system; Oryn drafts them from the budget and actuals. | Not a core workflow of a takeoff and estimating tool; check current scope with the vendor. |
| Xero integration | Native two-way sync; approved bills and progress claims push with tracking categories. | Integrates with Xero for accounting; verify the current scope of the sync. |
| Pricing philosophy | Flat platform price, everything included; 3 users; month-to-month with no lock-in available. | Confirm current pricing and licensing with Buildsoft, including per-product and per-seat options. |
| Australian builder fit | Built in Australia for Australian builders: GST, BAS, Xero, local workflow. | Australian-founded and long-established, widely used by AU estimators, quantity surveyors and builders. |
| AI agent connectivity | VIABUILD MCP: compatible AI agents read authorised live data and draft permitted records, preview first, with every call logged. Sending and paying stay with a person. | As of 3 September 2026, we could not find a publicly documented, vendor-supported MCP in Buildsoft’s official product or developer documentation. The platform may offer private, partner or recently released capabilities, so confirm current availability directly with the vendor. |
Competitor details are based on publicly available information and our understanding of each product at the time of writing, and may change. Always confirm current features and pricing with the vendor.
04 / AI agent connectivity
Can your AI agents work inside it?
Whether each platform lets a compatible AI agent read live business information and perform permitted actions through a vendor-supported MCP, and the controls around it. Competitor statements are traced to the vendor pages listed under the table; where we could not find a capability in those pages, the row says so rather than asserting absence.
| Dimension | VIABUILD | Buildsoft Cubit |
|---|---|---|
| Official MCP | Yes. VIABUILD MCP, built and supported by VIABUILD as part of the platform. | No publicly documented capability found |
| AI-agent connectivity | Yes. Any MCP client over Streamable HTTP; verified with claude.ai custom connectors, Claude Desktop and Claude Code. | No publicly documented capability found |
| Agent read access | Yes. Jobs, budgets, profitability, estimates, quote packages, catalogue prices, purchase orders, supplier bills, progress claims, variations, contracts, schedule, contacts and document metadata, scoped to one workspace. | No publicly documented capability found |
| Agent write access | Yes, as drafts. Writes are an opt-in scope, preview by default and persist only on an explicit call. Sending, paying, emailing, approval workflows and Xero stay off. | No publicly documented capability found |
| Human approval controls | Yes. Every write previews first. Nothing an agent drafts is sent, paid or pushed to Xero; those steps happen in the app, by a person. | No publicly documented capability found |
| Role and permission enforcement | Limited. Only owners and admins can issue a token, and each token carries chosen scopes for one workspace. Per-user role scoping is on the roadmap. | Unable to verify |
| Auditability | Yes. Every tool call is logged with token, workspace, tool, outcome and time. Arguments are deliberately not stored. Owners and admins can query the log; an in-app audit screen is on the roadmap. | Unable to verify |
| Public API | No general public REST API. MCP is the supported programmatic surface. | No publicly documented capability found |
| Webhooks | No publicly documented webhooks. | No publicly documented capability found |
| Custom agent support | Yes. Any MCP-compatible client or custom agent that speaks Streamable HTTP. | No publicly documented capability found |
| Documentation availability | Yes. Public feature and setup documentation on this site. | No publicly documented capability found |
Buildsoft advertises AI Estimating for Cubit inside the product.
Competitor information last checked: 3 September 2026. Where we could not find a capability in the vendor’s official product or developer documentation we say so; the platform may offer private, partner or recently released capabilities, so confirm current availability directly with the vendor. VIABUILD’s side is verified against the application on the same date. See VIABUILD MCP for what the connector does and does not do.
Sources: Buildsoft - Construction Estimating Software; Buildsoft AI Estimating.
05 / FAQ
Common questions.
It depends on what you need. Buildsoft Cubit is a focused estimating and takeoff tool where the priced estimate is the output. VIABUILD is the Construction Operating System: it covers estimating and takeoff, but the same estimate then flows into budgets, purchase orders, cost control and progress claims in one connected system, with Oryn intelligence built in. If you want the estimate to run the whole job rather than hand off to other tools, VIABUILD is the alternative.
Scope. In Cubit the estimate is the finished deliverable, and its strength is deep takeoff and estimating on one canvas. In VIABUILD the estimate is the starting point: it becomes the budget, the budget drives the purchase orders, and actuals report back against it, with zero double entry. On top of that, Oryn reads plans and invoices, drafts claims and flags variances across every module, including a dedicated accounts inbox that PO-matches supplier invoices.
Some builders do run a dedicated takeoff tool alongside a management system, so it is a fair question. The trade-off is the handoff: when the estimate lives in one tool and the budget, POs and claims live in another, the number gets re-keyed and the two can drift. VIABUILD removes that handoff by keeping takeoff, budget, procurement and claims in one system, so a quantity taken off once flows everywhere.
Both work with Xero. VIABUILD uses a native two-way sync where approved bills and progress claims push across with tracking categories. Cubit integrates with Xero for accounting. Confirm the current scope of each integration against your own accounting workflow.
06 / Keep reading
Explore the features behind the comparison
07 / Still comparing
Other estimating and takeoff tools compared
Most builders weigh up several products before they choose. These are the comparisons closest to this one.
See the difference on your own jobs.
Start with 7 days free: full platform, real data. $299 for your first month, then $555/mo. Run it side-by-side with what you’ve got and decide for yourself.