For most people, one to two evenings — roughly 6 to 12 hours of self-paced online study — with no minimum enrolment period, so you can start and finish it in a single week.
The honest time estimate
The approved owner-builder course is a legal-responsibilities briefing, not a construction qualification — so it’s short. Delivered online and self-paced in most states, the typical completion is 6 to 12 hours, which people usually spread across a couple of evenings. There’s no waiting period to serve and no exam to book: you start when you enrol and download the certificate when you finish.
Don’t let it stall your application
The course itself is quick, but leaving it to the last minute isn’t — a permit application can’t be lodged without the completion certificate. Build it into your sequence so the certificate is ready the day you apply, not a step you discover you still need.
Where the course sits (and what it costs)
The course comes after you’ve confirmed finance and priced the build, and before you lodge the permit. It typically costs around $120–$200, plus a White Card in the states that require one. The full breakdown — cost, format, expiry and which states even require it — is in the owner-builder course guide.