Model rent, payback, and value uplift across Ontario cities and ADU types, then get a property-specific quote.
Adjust the inputs and watch the numbers update live. Built on TRREB Q2 2026 GTA reference rents, scaled by city and suite type.
Pick your city to see how a basement, garden and laneway suite compare on estimated rent, value uplift and payback. The shortest-payback option is highlighted.
Typical build $90K · estimate
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Typical build $250K · estimate
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Typical build $300K · estimate
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All figures are estimates for educational purposes only. Rent is based on CMHC and TRREB market reference data scaled by city and suite type; payback ignores financing, taxes, vacancy and operating costs. A property-specific feasibility review replaces these ranges with actuals.
Illustrative scenarios using credible, conservative ADU rents, typically below TRREB headline averages because suites are often smaller than the condos in those reports.
Garden Suite Scenario
Garden Suite Scenario
Garden Suite Scenario
Garden Suite Scenario
Garden Suite Scenario
Garden Suite Scenario
Garden Suite Scenario
| ADU type | Low | Typical | High | Payback range | Value-add range |
|---|---|---|---|---|---|
| Basement Suite | $60K | $90K | $120K | 6–9 yrs | +$120K–220K |
| Attached Suite | $80K | $130K | $180K | 6–8 yrs | +$150K–280K |
| Above-Garage | $100K | $150K | $200K | 7–9 yrs | +$160K–300K |
| Garden Suite | $150K | $250K | $400K+ | 6–10 yrs | +$200K–400K |
| Laneway Suite | $200K | $300K | $450K+ | 7–11 yrs | +$220K–450K |
All figures are estimates for educational purposes. Actual cost depends on site conditions, servicing, finish level and municipality.
These are GTA condo apartment averages, Q2 2026: market reference points, not guaranteed ADU rents. We use them as a benchmark when sizing suites, then adjust down for smaller ADU footprints and by city.
Q2 2026 GTA rents are down 1.7–2.3% year-over-year vs Q2 2025, reflecting a well-supplied market.
A property-specific quote replaces estimates with actuals for your lot.
Get a property-specific quote