641-643 11e Avenue vs 870 11e Avenue
Data as of October 29, 2026 · updated every week
641-643 11e Avenue is the older building (1920); 870 11e Avenue was built in 1976. 870 11e Avenue is assessed at $614,000, 21% more than 641-643 11e Avenue ($505,600). 641-643 11e Avenue has 2 building permits on record, 870 11e Avenue has 0. Neither is in a flood zone.
| 641-643 11e Avenue | 870 11e Avenue | |
|---|---|---|
| Type | 2 dwellings | House or building |
| City and borough | Montréal · Lachine | Montréal · Lachine |
| Built | 1920 | 1976 |
| Assessed (roll) | $505,600 | $614,000 |
| Since the previous roll | +19 % | +21 % |
| Welcome tax on that value | ≈ $5,695 | ≈ $7,629 |
| Lot | 209 m² | 422 m² |
| Floor area | 186 m² | 116 m² |
| Notice of deterioration | No | No |
| City’s right of first refusal | No | No |
| Heritage | Yes | No |
| In a flood zone | No | No |
| Building permits on record | 2 · Feb 2026 | 0 |
| Findings | 3 Check 2 Note | 4 Note |
| Nearest metro | — | — |
The full report for each address explains every finding and shows the full permit and value history.