6734 21e Avenue vs 6840 21e Avenue
Data as of November 1, 2026 · updated every week
6734 21e Avenue is the older building (1954); 6840 21e Avenue was built in 1957. 6734 21e Avenue is assessed at $1,151,900, 43% more than 6840 21e Avenue ($805,900). 6734 21e Avenue has 1 building permits on record, 6840 21e Avenue has 0. Neither is in a flood zone.
| 6734 21e Avenue | 6840 21e Avenue | |
|---|---|---|
| Type | 6 dwellings | 3 dwellings |
| City and borough | Montréal · Rosemont-La Petite-Patrie | Montréal · Rosemont-La Petite-Patrie |
| Built | 1954 | 1957 |
| Assessed (roll) | $1,151,900 | $805,900 |
| Since the previous roll | +5 % | +6 % |
| Welcome tax on that value | ≈ $18,623 | ≈ $11,467 |
| Lot | 366 m² | 251 m² |
| Floor area | 416 m² | 201 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 2001 | 0 |
| Findings | 1 Serious 5 Note | 1 Serious 5 Note |
| Nearest metro | Saint-Michel, 1.2 km | Saint-Michel, 1.1 km |
The full report for each address explains every finding and shows the full permit and value history.