AI-powered cost control for Australian builders

Less admin. More builds.

CostStack brings invoices, receipts and drawings into a clear project-by-project view—built for Sydney builders, project managers and contractors who need the numbers to stay practical.

Start with CostStack Explore the workflow

Built around ABN, GST and site-address workflows.

CostStackLot 12 Kellyville

Project overview

Lot 12 Kellyville

On track

Budget

$480,000

Actual

$412,350

Remaining

$67,650

Cost to date

This week

receipts ready for review

Invoice hub active

Real projects. Real progress.

Project-first

Every expense and quantity sits against the job it belongs to.

Review before relying

AI-assisted data stays visible for your team to check.

Designed for site reality

Subbies, supplier receipts, GST and revisions are part of the work.

Two core workflows

The office and site stay on the same page.

01 / Invoice & Expense Hub

Stop chasing paper across the job.

Bring daily supplier receipts, trade invoices and statements into one reviewable queue. Extracted details can be assigned to the right site before they become a reporting problem.

Capture

Add a supplier invoice, receipt or statement from the office or site.

Review

Check vendor, ABN, GST, line items and project coding before it hits the ledger.

Track

See committed spend alongside the budget for each active address.

Set up your first project

02 / AI Drawing Takeoff

Move from drawings to workable quantities.

Upload 2D floor plans or structural drawings to produce a clear starting point for materials and planning. Keep drawing notes, scale and revisions in the review process before ordering.

Ground floor plan.pdf

Takeoff review

Floor areas

Measured from 2D PDF floor plans

Concrete volumes

Useful quantities for slab and structural planning

Framing & sheets

Timber and plasterboard quantity summaries

Start a takeoff workspace

Straightforward plans

Choose the level of control your jobs need.

Monthly plans in Australian dollars for construction teams starting with a single project or managing a growing site portfolio.

Compare plans

Starter

$199

AUD / month

For a focused project team establishing a cleaner cost-control routine.

Pro Builder

$499

AUD / month

For teams coordinating multiple active sites and a broader view of spend.

Built for what's next

Bring every job back to a clear cost position.

Start with the invoices and drawings already on your desk. CostStack gives the team a more organised place to review, track and act.

Get started