Property Wealth Hub  ·  Subdivision
Module 3 of 4  ·  Subdivision

Dual Occupancy
Deep Dive

The numbers, design requirements, construction process, and end strategy — for Australia's most accessible development type.

⏱ 10 min
📖 4 lessons
📝 Module quiz

What you will learn

Four things to understand before you start the lessons.

01
Site requirements

Minimum lot size, frontage, setbacks, and coverage limits — by council and zone.

02
Build costs and timelines

What a dual occupancy costs to build in 2025 and how long it realistically takes.

03
Feasibility modelling

Land cost, build cost, DA and holding costs, versus end value — the full calculation.

04
End strategies

Keep both, sell both, or sell one and retain one — which works best in which market.

Dual occupancy feasibility model

A simplified real-world example.

🔢 Land: $900K. Build 2 × 3-bed homes: $620K. DA, consultants, holding: $95K. Total in: $1,615K. End value: 2 × $950K = $1,900K. Gross profit: $285K. Margin: 17.6%. Acceptable — but tight. Net margin after GST and selling costs: ~14%. This deal needs to be bought better.
$310K–$380K
typical build cost per dwelling for dual occupancy in Sydney 2025

Costs vary by builder, specification level, and slope of the site. Sloping sites add 15–25% to foundations and earthworks. Budget conservatively and get three quotes before committing.

✅

You are ready to begin

4 lessons, approximately 10 minutes. Complete the quiz to unlock the next module.

In this module
✓Site requirements
✓Build costs 2025
✓Full feasibility model
✓End strategy options
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