CostMate vs Buildxact for NZ residential builders

Last updated 28 September 2026

Buildxact is a full platform: take-offs, estimating, supplier ordering, scheduling and job tracking in one place. CostMate does the estimate and the job after it in the same place, for NZ residential builders. It works out the materials with quantities, the labour by stage in hours, and the assumptions and exclusions. Once you win the job, the same job carries variations, purchase orders, progress claims and your crew's hours, which only count once you approve them.

CostMate and Buildxact at a glance

Ticks and crosses for Buildxact are taken from Buildxact's own New Zealand website, checked 28 September 2026: a cross means the feature is not listed there. Prices change, so they are left to each company's own pricing page.

Where does CostMate come out ahead?

Prices are loaded before you start. Dayle ITM and PlaceMakers trade pricing is in every account, including the free one, so a first estimate needs nothing uploaded, and your own supplier pricing takes priority when you add it.

The quantities and hours are worked out for you. Describe the job and CostMate works out the materials with quantities and the labour in hours by phase, from rules for its built-in job types, so the same job entered twice gives the same numbers.

Assumptions, exclusions and NZ Building Code checks are written for the quote, included for review before it goes to a client.

After the win, the same job carries variations, purchase orders, progress claims and the crew hours you approve.

What is the difference between CostMate and Buildxact?

Scope. Buildxact describes itself as total job management for residential builders, covering the work "from first takeoff to final invoice". CostMate starts with the first part of that (the estimate and the quote) and carries on after the win with variations, purchase orders, progress claims and your crew's hours, which only count once you approve them, with the quantities and labour hours worked out for you.

By Buildxact's own description, its platform includes takeoffs, estimating and quoting, a supplier connection with real-time material pricing and purchase orders sent straight to your supplier, and project management for schedules and budgets; its plans also list timesheets, change orders and invoicing. It sells three plans: Foundation, which it describes as for builders and trades who want to estimate, quote and buy materials, and Pro and Master, which add job management for more projects and larger teams. There is a 14-day free trial.

CostMate is built for NZ residential builders, from one person to a crew. You pick the job type (deck, fence, bathroom, kitchen, reclad, addition and others), describe the job, and get the materials, labour hours, assumptions and exclusions priced from NZ trade pricing that is already loaded. There is a free plan and a 30-day trial of the paid features, neither of which needs a card.

How do CostMate and Buildxact use AI?

Differently. Buildxact describes Blu, its AI assistant, as trained on thousands of residential projects and able to generate a complete estimate, review an estimate for common mistakes, help with take-offs and build recipes for repeatable jobs.

In a CostMate estimate the numbers do not come from a model. Every quantity, price, labour hour and grade in the estimate is calculated by a rules engine; the language model writes only the words: the scope summary, the assumptions, the exclusions. That split is enforced in code by an allow-list. Some other features are different: The Foreman assistant and the check that compares a competing quote do use a language model, and any figure they give is a starting point to check, not part of the estimate.

The practical effect is that the same job entered twice returns the same numbers, and every figure traces back to a rule and a priced source you can check. Whether you prefer that or an assistant that drafts the estimate for you is a genuine choice, not a right answer.

Where does the pricing come from?

Buildxact says its supplier connection gives you real-time material pricing from your supplier, and lets you send purchase orders to your supplier from the platform.

CostMate loads Dayle ITM and PlaceMakers trade pricing into every account, including the free one, so a first estimate needs nothing uploaded. On any plan, including Free, you can upload your own supplier pricing, and it takes priority over the built-in pricing. Every material line shows where its price came from: your own supplier pricing, a named Dayle ITM or PlaceMakers baseline, or (where no supplier price was found) CostMate's own rate, marked "Indicative · Verify" so you know to check it.

When is Buildxact the better choice?

When you want one system for the whole job. If you need on-screen take-offs from plans, material ordering through your supplier, and scheduling and budgets once the job is on (especially across several jobs and a team) that is what Buildxact is built to do. Those are Buildxact's strengths.

When is CostMate the better choice?

When you want the estimate and the job after it in the same place, for NZ residential work. If you already run jobs in Tradify, Fergus, NextMinute, a spreadsheet or a diary, CostMate works alongside it.

It also suits a builder who wants to see the working: the materials with quantities, the labour in hours by phase, and the assumptions and exclusions worth putting in front of a client, before the quote goes out. Scope checks reference NZ Building Code clauses such as E2, E3, H1 and B1 (Structure) and are included for review, to confirm against your plans and with the BCA.

You can try it without committing: the walkthrough shows the flow end to end, the free Quote Checker reads a quote you have already written, and plans and pricing are on one page. For the wider field see estimating software for NZ builders and the pricing guides for each job type, and the other comparisons: CostMate vs Tradify, CostMate vs Fergus, CostMate vs NextMinute, CostMate vs spreadsheets.

Whichever tool you use, an estimate is a starting point you check, not a number to send unread. Confirm prices against your own supplier accounts and anything structural against your plans and the BCA before you quote.