129-131 18e Avenue vs 420 18e Avenue
Data as of October 25, 2026 · updated every week
420 18e Avenue is the older building (1900); 129-131 18e Avenue was built in 1928. 129-131 18e Avenue is assessed at $589,100, 14% more than 420 18e Avenue ($517,900). 129-131 18e Avenue has 0 building permits on record, 420 18e Avenue has 5. Neither is in a flood zone.
| 129-131 18e Avenue | 420 18e Avenue | |
|---|---|---|
| Type | 2 dwellings | House or building |
| City and borough | Montréal · Lachine | Montréal · Lachine |
| Built | 1928 | ≈ 1900 |
| Assessed (roll) | $589,100 | $517,900 |
| Since the previous roll | +7 % | +19 % |
| Welcome tax on that value | ≈ $7,131 | ≈ $5,879 |
| Lot | 333 m² | 279 m² |
| Floor area | 243 m² | 133 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 | 5 · Oct 2026 |
| Findings | 1 Check 5 Note | 2 Check 4 Note |
| Nearest metro | — | — |
The full report for each address explains every finding and shows the full permit and value history.