580 18e Avenue vs 629-631 18e Avenue
Data as of October 29, 2026 · updated every week
580 18e Avenue is the older building (1920); 629-631 18e Avenue was built in 1940. 629-631 18e Avenue is assessed at $658,100, 28% more than 580 18e Avenue ($513,800). 580 18e Avenue has 2 building permits on record, 629-631 18e Avenue has 4. Neither is in a flood zone.
| 580 18e Avenue | 629-631 18e Avenue | |
|---|---|---|
| Type | House or building | 2 dwellings |
| City and borough | Montréal · Lachine | Montréal · Lachine |
| Built | 1920 | 1940 |
| Assessed (roll) | $513,800 | $658,100 |
| Since the previous roll | +19 % | +19 % |
| Welcome tax on that value | ≈ $5,818 | ≈ $8,511 |
| Lot | 304 m² | 387 m² |
| Floor area | 116 m² | 226 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 · Jul 2014 | 4 · Jun 2017 |
| Findings | 1 Check 3 Note | 3 Note |
| Nearest metro | — | — |
The full report for each address explains every finding and shows the full permit and value history.