510-514 4e Avenue vs 578-584 4e Avenue
Data as of October 25, 2026 · updated every week
578-584 4e Avenue is the older building (1925); 510-514 4e Avenue was built in 1930. 578-584 4e Avenue is assessed at $658,000, 42% more than 510-514 4e Avenue ($463,500). Neither has a building permit on record. Neither is in a flood zone.
| 510-514 4e Avenue | 578-584 4e Avenue | |
|---|---|---|
| Type | 3 dwellings | 3 dwellings |
| City and borough | Montréal · Lachine | Montréal · Lachine |
| Built | 1930 | 1925 |
| Assessed (roll) | $463,500 | $658,000 |
| Since the previous roll | +19 % | +21 % |
| Welcome tax on that value | ≈ $5,063 | ≈ $8,509 |
| Lot | 177 m² | 177 m² |
| Floor area | 269 m² | 251 m² |
| Notice of deterioration | No | No |
| City’s right of first refusal | No | No |
| Heritage | Yes | Yes |
| In a flood zone | No | No |
| Building permits on record | 0 | 0 |
| Findings | 2 Check 5 Note | 1 Check 4 Note |
| Nearest metro | — | — |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 510-514 4e Avenue Full report: 578-584 4e Avenue