Project & Invoicing Software for Builders

Building businesses run on razor-thin margins, and most of the admin stack works against you. You're estimating jobs in Buildxact or Excel, managing subbies with phone calls and texts, invoicing progress claims through Xero, and tracking site photos in Dropbox or a camera roll that's three phones old. Throw in Tradify or Deputy for scheduling and you're paying $200–300/month across four or five platforms — none of which give you a single view of how a project is actually tracking against budget. By the time you realise a build has blown its margin, it's too late to claw it back.

OneBookPlus puts your entire building business in one place. Create staged project quotes with costs broken down by phase — foundations, framing, lock-up, fit-out, completion. Track subcontractor assignments, quotes, and payments per stage. Log variations with client approval and see the impact on your project total in real time. Send progress claims at each milestone as GST-compliant invoices with your ABN and builder licence number. Capture site photos on your phone and attach them directly to the project record, timestamped and organised by build phase. And because invoicing and accounting live in the same system, your profitability dashboard shows real margin — quoted vs. actual — across labour, materials, and subbies at any point in the build.

Your Daily Workflow

Monday morning. You open OneBookPlus and review your project dashboard — two active new builds and a kitchen renovation. The Brookvale build is at frame stage with the progress claim due this week. The Dee Why reno has a variation request: the client wants stone benchtops instead of laminate. You log the variation ($4,200 uplift), send the approval request with one tap, and the client confirms by lunchtime. At the Brookvale site, you snap progress photos of the completed framing, attach them to the project, and send the frame-stage progress claim — $92,000 including GST. You check the subcontractor tab: the plumber and electrician have both invoiced for rough-in. You mark the plumber as paid and schedule the sparky's payment for Friday. End of day: one progress claim sent, one variation approved, subbie payments tracked, and your profitability dashboard shows the Brookvale build tracking 3% above estimated margin.

Bank Feeds & Accounting

Connect your business bank account via CDR Open Banking and OneBookPlus pulls in transactions daily. When the Brookvale client pays their progress claim, the deposit is automatically matched against the outstanding invoice. Subcontractor payments are reconciled against their logged invoices. Materials purchases from Bunnings, timber yards, and concrete suppliers are categorised as project expenses with our AI engine learning your patterns over time. You can see exactly how much cash has flowed in and out of each project at any moment — not three months later when your accountant finishes the quarterly. BAS summaries generate in one click: GST collected on progress claims, GST credits on materials and subbie invoices, net amount owing.

Getting Started

Sign up free — no credit card, no lock-in contract. Select “Builder / Construction” as your business type and OneBookPlus pre-configures your account with staged project templates, common build phases, and invoice layouts that include your builder licence number. Import your client and subcontractor lists via CSV from Buildxact, Tradify, or a spreadsheet. Connect your bank account through the secure Open Banking flow. Within your first week you'll have a project quoted with staged costings, your first progress claim sent, and your bank feed categorising transactions automatically. Most builders complete the switch from their existing tool stack over a single weekend.