What Is the ROI on an ADU? ($80,000 vs $150,000 Scenarios)
If you’re building an Accessory Dwelling Unit (ADU) in Toronto or the GTA, a realistic construction range is $80,000 to $150,000, depending on size, layout, finishes, and structural requirements. Let’s break down both scenarios so you can see the potential return clearly.
How ROI Is Calculated
- ROI=(Annual Net Income/Total Investment)∗100ROI = (Annual Net Income / Total Investment) * 100ROI=(Annual Net Income/Total Investment)∗100
- For simplicity, we’ll look at gross rental income before expenses.
Scenario 1: $80,000 ADU Investment
- Typical project: Basic legal basement apartment with minimal structural changes.
- Estimated Rent: $1,800/month
Annual Rental Income: $21,600 - Now applying the formula:
- ROI ≈ ($21,600 ÷ $80,000) × 100
Approximate Gross ROI: 27% annually
What This Means
- Strong cash-on-cash return
- Faster payback period (about 3–5 years gross)
- Ideal for homeowners converting existing space
- This is often the highest ROI scenario because you’re maximizing existing structure.
Scenario 2: $150,000 ADU Investment
- Typical project: Larger basement renovation, garden suite, or higher-end finishes.
- Estimated Rent: $2,200/month
Annual Rental Income: $26,400 - ROI ≈ ($26,400 ÷ $150,000) × 100
Approximate Gross ROI: 17–18% annually
What This Means
- Lower percentage return than the $80K scenario
- Higher long-term property appreciation
- Strong resale value impact
Additional ROI Benefits Beyond Rent
✔ Increased property value
✔ Mortgage offset
✔ Multi-generational living flexibility
✔ Long-term real estate appreciation in the GTA
