How a $10M Melbourne home kept its $1.5M builder's margin.

Not theory — a real custom build, run under an Owner-Builder licence with a project manager instead of a registered builder. Inside: the model, the math (industry-standard margin minus PM fee), where the savings came from line by line, and who this approach is and isn't for.

• Why high-end clients are skipping registered builders — and what they hire instead
• The math: industry-standard 15–25% margin × build cost, minus PM fee, with HIA / MBA sources cited
• Where the savings actually came from: procurement, trade selection, sequencing, no margin-stacking
• The 13-month timeline, with the 4 points where the project nearly slipped
• The risks PM-led owner-building protects against — and the ones it doesn't
• Who full PM is for ($5M+ builds) — and how à la carte consulting works on smaller projects
• BONUS: the 47-step owner-builder permit checklist $497 value