Over the trailing 24 months, 1,917 building permits were issued inThunder Bay, ON, representing$587.9M in declared project value, an average of80 permits per month. For contractors, suppliers, and trades, that volume is the real signal: it's the pipeline of projects breaking ground in Thunder Bay that you can be bidding on. Permits here also took a median of 11 days (average 29.3 days) from application to issuance, so you can time outreach to when a project is actually moving.
Thunder Bay permit activity at a glance
| Metric | Value |
|---|---|
| Permits issued (last 24 months) | 1,917 |
| Total declared project value | $587.9M |
| Average permits per month | 80 |
| Average project value | $325K |
| Median days to issuance | 11 days |
| Average days to issuance | 29.3 days |
| Cross-city median (6 timing cities) | 28 days |
Permit volume trend in Thunder Bay
The busiest single month was Jun 2025(137 permits). Volume isn't flat, application activity rises in spring and summer, which is exactly when the project pipeline is deepest and competition for trades is highest. Tracking the month-over-month curve lets you staff and bid ahead of the surge instead of chasing it.
Permit activity by type of work in Thunder Bay
Where the work actually is matters more than any headline. Here are the most common permit categories in Thunder Bay over the last 24 months, ranked by volume, with the average project value and wait time for each, so you can see which segments are both active and worth chasing:
| Type of work | Permits | Avg value | Median days |
|---|---|---|---|
| Plumbing System Only - Single Detached Dwelling | 707 | $4K | 4 |
| Addition/Alteration - Single Detached Dwelling | 165 | $55K | 14 |
| New - Detached Garage | 111 | $42K | 16 |
| New - Single Detached Dwelling | 80 | $493K | 28 |
| Addition/Alteration - Duplex | 54 | $46K | 36 |
| Demolition - Detached Garage | 44 | n/a | 1 |
| Addition/Alteration - Commercial Mall | 43 | $326K | 56 |
| New - Outdoor Recreation Accessory Bldg. | 26 | $36K | 13 |
| New - Duplex | 25 | $481K | 25 |
| Addition/Alteration - Office Building | 23 | $146K | 42 |
| Demolition - Single Detached Dwelling | 23 | n/a | 8 |
| Addition/Alteration - Assembly/Commercial | 22 | $720K | 66 |
How Thunder Bay wait times compare
The median across the 6 cities with published processing-time data is 28 days. Thunder Bay sits 17 days faster than that benchmark. Faster issuance means a shorter gap between a permit being filed and shovels in the ground, and a shorter window to get in front of the owner or GC before a competitor does.
How to use this for Thunder Bay lead generation
A permit is the earliest hard signal that a real, funded project is moving. The contractors who win the work are the ones who reach the owner or general contractor first, usually before the project is publicly visible. The practical play:
- Filter by your trade and value band. Use the by-work-type table to focus on the categories that match your crew and your margins.
- Watch the volume curve. Spring and summer surges mean more projects but more competition, get your outreach queued before the peak.
- Move on fresh permits fast. With a 11-day median wait here, the window between a permit issuing and a project being staffed is short. Speed wins the bid.
- Track owners and GCs, not just addresses. Permit records name who's building, that's your contact list.
About these numbers
These are permit-volume and application-to-issuance timingbenchmarks drawn from issued building permits in Thunder Bay. They are not approval rates: the underlying dataset has no approval-versus-denial field, so we never report rejection percentages. Volume and value tell you where the work is; wait times tell you how fast it moves; SiteWire surfaces the individual permits behind these totals so you can act on them.