640 18e Avenue vs 669-673 18e Avenue
Data as of October 25, 2026 · updated every week
640 18e Avenue is the older building (1946); 669-673 18e Avenue was built in 1950. 640 18e Avenue is assessed at $1,143,100, 28% more than 669-673 18e Avenue ($896,200). 640 18e Avenue has 4 building permits on record, 669-673 18e Avenue has 2. Neither is in a flood zone.
| 640 18e Avenue | 669-673 18e Avenue | |
|---|---|---|
| Type | House or building | 3 dwellings |
| City and borough | Montréal · Lachine | Montréal · Lachine |
| Built | 1946 | 1950 |
| Assessed (roll) | $1,143,100 | $896,200 |
| Since the previous roll | +19 % | +19 % |
| Welcome tax on that value | ≈ $18,403 | ≈ $13,273 |
| Lot | 799 m² | 586 m² |
| Floor area | 227 m² | 269 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 | 4 · Nov 2020 | 2 · Aug 2011 |
| Findings | 3 Note | 4 Note |
| Nearest metro | — | — |
The full report for each address explains every finding and shows the full permit and value history.