Built for Australian Builders
Project & Invoicing Software for Builders
From project costing to progress billing — quote the build, manage subbies, track variations, and get paid at every milestone. Built for Australian builders who'd rather be on-site than drowning in admin.
Everything You Need
Built for How Builders Actually Work
Forget clunky desktop software. OneBookPlus is the builder business app designed for tradies managing projects — not sitting behind a desk filling in spreadsheets.
Project Costing & Quotes
Build detailed project quotes with staged costings — foundations, framing, fit-out, finishing. Itemise labour, materials, and subcontractor costs so the client sees exactly where the money goes.
Progress Billing
Invoice clients at each project milestone — slab, frame, lock-up, fix, completion. Track what's been billed vs. what's outstanding so cash flow stays healthy across long builds.
Subcontractor Management
Track subbies assigned to each project stage. Log their quotes, invoices, and payment status in one place. Know exactly who's been paid and who's outstanding at any point in the build.
Variation Tracking
Client wants to upgrade the benchtops? Log variations with costs, get approval, and add them to the project total. Full audit trail of every scope change and its impact on the bottom line.
Site Photos & Documentation
Capture progress photos on-site and attach them to the project record. Document each stage for clients, councils, and your own records — timestamped and organised by build phase.
GST & BAS Ready
Every invoice automatically calculates 10% GST and displays your ABN and builder licence number. Export GST summaries at BAS time — your accountant will thank you.
Project Profitability Dashboard
See real-time margin on every build. Compare quoted costs vs. actuals across labour, materials, and subcontractors. Spot budget blowouts early — before they eat your profit.
Expense & Materials Tracking
Log timber, concrete, fixings, and supply runs against each project. Snap receipt photos on-site so you know exactly how profitable every build really is after all costs.
Simple Workflow
How OneBookPlus Works for Builders
From project quote to final payment in four steps — designed around how builders actually manage builds.
Quote the project
Build a staged project quote with costs broken down by phase — foundations, framing, fit-out, completion. Include labour, materials, and subcontractor costs with GST calculated automatically. Send as a professional PDF with your ABN and builder licence.
Manage the build
Schedule project phases, assign subbies, track progress with site photos, and log variations as they come up. Every change is documented with costs and client approval.
Invoice at each milestone
Send progress claims at each stage — slab, frame, lock-up, fix, completion. Convert quoted stages to GST-compliant invoices with one tap.
Get paid on time
Customers pay online via the invoice link. Automated reminders chase overdue progress payments so you can keep the build moving, not chase money.
Who it's for
Built for every building business
Whether you're a sole trader doing renos or running a crew on new builds, OneBookPlus adapts to how builders work.
Residential Builder
Managing new home builds and renovations. Needs staged project quoting, progress billing at each milestone, and variation tracking when clients change their minds.
Commercial Builder
Larger projects with multiple subcontractors and staged payments. Needs subcontractor management, progress claims, and real-time project profitability tracking.
Renovation Specialist
Kitchen, bathroom, and extension projects. Needs detailed quoting with materials breakdown, site photos for client updates, and fast invoicing on completion.
Owner-Builder Coordinator
Managing subbies and suppliers on behalf of owner-builders. Needs clear cost tracking, subcontractor scheduling, and transparent client-facing invoices.
Stop overpaying
How much are you spending on software?
Most small businesses stitch together 4-6 tools that don't talk to each other. Here's what that typically costs.
Real-world scenario
A day in the life: Tom the builder
How a Gold Coast builder uses OneBookPlus on a typical Monday
Tom starts the week reviewing his project dashboard — two active builds and a renovation. The Burleigh new build is at frame stage with the progress claim due. The Currumbin reno has a variation request from the client: upgraded kitchen benchtops.
Tom logs the variation in OneBookPlus — $4,200 for stone benchtops instead of laminate. He sends the variation approval to the client with one tap. They approve by lunchtime.
At the Burleigh site, Tom snaps progress photos of the completed framing, attaches them to the project, and sends the frame-stage progress claim: $85,000 including GST. The invoice goes out as a professional PDF with his ABN and builder licence number.
He checks the subcontractor tab — the plumber and electrician have both invoiced for rough-in. Tom marks the plumber as paid and queues the sparky's payment for Friday.
End of day: one progress claim sent ($85,000), one variation approved ($4,200), subbie payments tracked. His profitability dashboard shows the Burleigh build is tracking 2% above estimated margin. Come BAS time, Tom's GST summary exports in one click.
How we compare
OneBookPlus vs builder software
See how we compare to the tools builders typically use.
| Feature | OneBookPlus | Xero | Buildxact | CoConstruct |
|---|---|---|---|---|
| GST invoicing | ||||
| Staged project quotes | ||||
| Progress billing | ||||
| Variation tracking with approval | ||||
| Subcontractor management | ||||
| Site photos & documentation | ||||
| CRM & client history | ||||
| Expense tracking with photos | ||||
| BAS-ready tax reports | ||||
| Free plan available | ||||
| Price | From $0/mo | $35+/mo | $149+/mo | $99+/mo |
Trusted by Builders Across Australia
3x
Faster invoicing than paper or spreadsheets
$0
Free plan — no monthly fees to get started
14 days
Average reduction in payment wait times
100%
GST & BAS compliant for Australian builders
Australian Owned
Built in Melbourne, AU
GST Compliant
ATO-ready from day one
Bank-Grade Security
256-bit encryption
Free Plan Available
No credit card needed
Frequently Asked Questions
Common questions about invoicing and project management software for builders in Australia.
Is OneBookPlus free for builders?
Yes — our free plan includes unlimited invoices, quotes, and up to 5 clients. Great for sole trader builders or small residential builders getting started. Upgrade anytime as your building business grows.
Does builder software handle progress billing and GST?
Every progress claim automatically calculates 10% GST, displays your ABN and builder licence number, and meets ATO requirements. Invoice at each project milestone — slab, frame, lock-up, fix, completion. At BAS time, export a GST summary in one click.
Can I track variations and scope changes in OneBookPlus?
Yes. Log variations with costs, get client approval, and add them to the project total. Every variation includes a full audit trail — what changed, when, who approved it, and how it affects the project price.
Does OneBookPlus handle subcontractor management?
Absolutely. Track subbies assigned to each project stage, log their quotes and invoices, and monitor payment status. You always know who's been paid and who's outstanding across every active build.
Can I capture site photos and attach them to projects?
Yes. Take progress photos on-site and attach them directly to the project record. Photos are timestamped and organised by build phase — perfect for client updates, council inspections, and your own records.
About the author
Bishal Shrestha
Founder & CEO, OneBookPlus
Bishal has over a decade of experience in digital marketing, web development, and small business consulting across Australia. He has worked directly with Australian building businesses — from sole traders doing renovations to companies managing multi-stage residential builds — helping them streamline project costing, progress billing, and subcontractor management.
Stop Chasing Progress Payments. Start Building.
Join Australian builders who manage projects smarter with OneBookPlus. Free to start — upgrade when you're ready.
Get Started FreeLast reviewed and updated: March 2026 by Bishal Shrestha