639-641 18e Avenue vs 646-648 18e Avenue
Data as of October 29, 2026 · updated every week
639-641 18e Avenue is the older building (1935); 646-648 18e Avenue was built in 1949. 646-648 18e Avenue is assessed at $812,300, 12% more than 639-641 18e Avenue ($728,400). 639-641 18e Avenue has 3 building permits on record, 646-648 18e Avenue has 0. Neither is in a flood zone.
| 639-641 18e Avenue | 646-648 18e Avenue | |
|---|---|---|
| Type | 2 dwellings | 4 dwellings |
| City and borough | Montréal · Lachine | Montréal · Lachine |
| Built | 1935 | 1949 |
| Assessed (roll) | $728,400 | $812,300 |
| Since the previous roll | +19 % | +19 % |
| Welcome tax on that value | ≈ $9,917 | ≈ $11,595 |
| Lot | 270 m² | 400 m² |
| Floor area | 200 m² | 218 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 | 3 · Jun 2003 | 0 |
| Findings | 1 Check 3 Note | 4 Note |
| Nearest metro | — | — |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 639-641 18e Avenue Full report: 646-648 18e Avenue