6680-6684 21e Avenue vs 6870 21e Avenue
Data as of November 1, 2026 · updated every week
6870 21e Avenue is the older building (1954); 6680-6684 21e Avenue was built in 1955. 6870 21e Avenue is assessed at $868,000, 17% more than 6680-6684 21e Avenue ($740,300). Neither has a building permit on record. Neither is in a flood zone.
| 6680-6684 21e Avenue | 6870 21e Avenue | |
|---|---|---|
| Type | 3 dwellings | 5 dwellings |
| City and borough | Montréal · Rosemont-La Petite-Patrie | Montréal · Rosemont-La Petite-Patrie |
| Built | 1955 | 1954 |
| Assessed (roll) | $740,300 | $868,000 |
| Since the previous roll | +6 % | +6 % |
| Welcome tax on that value | ≈ $10,155 | ≈ $12,709 |
| Lot | 242 m² | 376 m² |
| Floor area | 200 m² | 231 m² |
| Notice of deterioration | No | No |
| City’s right of first refusal | No | No |
| Heritage | No | No |
| In a flood zone | No | No |
| Building permits on record | 0 | 0 |
| Findings | 1 Serious 4 Note | 1 Serious 5 Note |
| Nearest metro | Saint-Michel, 1.3 km | Saint-Michel, 1.1 km |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 6680-6684 21e Avenue Full report: 6870 21e Avenue