6566 21e Avenue vs 6636-6638 21e Avenue
Data as of November 1, 2026 · updated every week
6566 21e Avenue is the older building (1954); 6636-6638 21e Avenue was built in 1955. 6566 21e Avenue is assessed at $1,269,000, 54% more than 6636-6638 21e Avenue ($824,800). 6566 21e Avenue has 1 building permits on record, 6636-6638 21e Avenue has 3. Neither is in a flood zone.
| 6566 21e Avenue | 6636-6638 21e Avenue | |
|---|---|---|
| Type | 6 dwellings | 2 dwellings |
| City and borough | Montréal · Rosemont-La Petite-Patrie | Montréal · Rosemont-La Petite-Patrie |
| Built | 1954 | 1955 |
| Assessed (roll) | $1,269,000 | $824,800 |
| Since the previous roll | +5 % | +10 % |
| Welcome tax on that value | ≈ $21,551 | ≈ $11,845 |
| Lot | 489 m² | 242 m² |
| Floor area | 488 m² | 186 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 | 1 · Oct 2024 | 3 · Jun 2026 |
| Findings | 1 Serious 1 Check 3 Note | 1 Serious 1 Check 3 Note |
| Nearest metro | Saint-Michel, 1.5 km | Saint-Michel, 1.4 km |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 6566 21e Avenue Full report: 6636-6638 21e Avenue