IPHONE AND ANDROID
Your whole build.
In your pocket.
Stand on the slab and see what is due today, check the program and ask the AI Supervisor. Tap a screen to see it.
BUILT FOR AUSTRALIAN OWNER BUILDERS
Build smarter.
Build with confidence.
OB1 is the all-in-one construction management platform designed specifically for Owner Builders and Small Residential Custom Builders.
AUSTRALIAN MADE & OWNED
BUILT FOR OWNER BUILDERS
SIMPLIFY. ORGANISE. BUILD BETTER.
Every task for the month on one calendar, with funding, cost certainty and issues underneath.
YOUR AI SUPERVISOR
An expert on your build,
on call 24/7.
It talks, it listens, and it never invents a number. Every dollar and date comes from the OB1 engine. Watch it answer.
✓ Checked against your project
HOW IT WORKS
From drawings to a scheduled build in three steps
OB1 doesn’t ask you to build a spreadsheet. It asks the questions a quantity surveyor would, then does the work of one.
STEP 1
Start from your phone
Open the AI Supervisor, upload a plan or just describe the home. Or answer the questions yourself in a few minutes.
EVERYTHING IN ONE PLACE
Every module an owner builder needs — nothing you don’t
Quick & complete estimate
Measured quantities → trade % → statutory → margin + supervision → HII → GST. Edit up to 16 inputs and watch the forecast move.
Construction program
Gantt with stages, dependencies, critical path, working days per state. Drag a task and 38 downstream tasks move with it.
Procurement & purchase orders
Order-by dates from lead times. Raise POs, send to suppliers, match invoices, see committed vs actual per cost code.
Variations & cost control
Client and site variations with approval routing. Estimated, committed, actual and variance on every cost code.
Issues, checklists & documents
Photo-logged issues, critical checklist items that gate stage sign-off, required certificates and permits in one vault.
Activities
A project conversation with your trades and client, with tasks, POs and variations linked right in the thread.
AI Supervisor
Chat or talk. Create a project from drawings, propose changes, generate program PDFs and claims — numbers always from the OB1 engine.
Contacts & roles
Scan a business card, invite trades and your client, give each one exactly the project access they need.
Built for Australia
VIC, WA, NSW, QLD, SA, TAS, NT and ACT settings, Google Maps addresses, Twilio-verified phones, GST and HII built in.
TRY IT
Move one task. Watch the rest follow.
Rain holds up the slab. In OB1 you change one date and every task, order and trade that depends on it moves with it.
EXAMPLE PROGRAM
Everything is on time. Pick a delay to see what moves.
✓ Checked against your project
YOUR AI SUPERVISOR
An expert on your build, on call 24/7
Upload drawings and it creates the whole project. Ask it to change the roof and it shows you the cost and the days before anything is applied. Ask why a task is critical and it explains in plain English. It talks, it listens, and it never invents a number — every dollar and date comes from the OB1 estimate engine.
Create a project from PDFs or photos of plans
Propose changes — apply only when you say so
Program PDFs, progress claims and invoices on request
Voice mode for the ute and the site
SIMPLE PRICING
Start free. Pay when you’re building.
Try Basic free for 14 days. Move up when you want detailed estimates, more AI, or a team. Prices are in Australian dollars and include GST.
14-day free trial · 1 active project · 3 drafts · Quick Estimate · 300 AI credits a month
Start free trial1 active project · 5 drafts · Customised Estimate · 1,500 AI credits a month · 25 trades
Choose PremiumFor registered builders · 8 active projects · 10 drafts · 5 staff · builder’s margin · 5,000 AI credits
Choose BusinessRunning more than 15 projects? Contact us for a Custom plan.
QUESTIONS
Straight answers
Ready to run your build like a pro?
Start a free trial, answer the quick estimate, and see your whole program before lunch.