Toronto issued 92 permits for basement underpinning in the last 12 months. The typical declared cost was $50k, and the middle half of projects declared between $25k and $80k. A typical permit took 5 days from application to issue, against 18 days for all small residential work. The busiest month was September 2026, with 13 permits.
Lowering a basement floor by extending the foundations down. Number of permits in each declared-cost band.
Postal areas with at least 5 priced permits for this work. Tap a column heading to sort.
| Area | Postal | Permits | Typical cost | Wait (days) |
|---|---|---|---|---|
| Woodbine Heights | M4C | 8 | $20k | 5 |
| Leslieville | M4M | 6 | $50k | 6 |
| High Park North & The Junction | M6P | 6 | $40k | 6 |
| Bloor West Village & Swansea | M6S | 5 | $50k | 5 |
| New Toronto & Mimico | M8V | 5 | $45k | 5 |
| Home | Permits | Typical cost |
|---|---|---|
| House, Detached | 55 | $50k |
| House, Semi-Detached | 28 | $50k |
Permits issued for basement underpinning across Toronto each month. Tap or hover a month.
Source: City of Toronto building permits, Small Residential Projects issued since November 2025, work type "Underpinning". Costs are as declared on permit applications, not final prices, and leave out work that needs no permit.