455 avenue Roslyn vs 504 avenue Roslyn
Data as of October 29, 2026 · updated every week
455 avenue Roslyn is the older building (1909); 504 avenue Roslyn was built in 1939. 455 avenue Roslyn is assessed at $4,553,300, 76% more than 504 avenue Roslyn ($2,592,000). Neither has a building permit on record. Neither is in a flood zone.
| 455 avenue Roslyn | 504 avenue Roslyn | |
|---|---|---|
| Type | House or building | House or building |
| City and borough | Westmount | Westmount |
| Built | 1909 | 1939 |
| Assessed (roll) | $4,553,300 | $2,592,000 |
| Since the previous roll | 0 % | 0 % |
| Welcome tax on that value | ≈ $66,410 | ≈ $36,991 |
| Lot | 746 m² | 464 m² |
| Floor area | 387 m² | 308 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 | 0 | 0 |
| Findings | 1 Note | 1 Note |
| Nearest metro | Vendôme, 810 m | Vendôme, 840 m |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 455 avenue Roslyn Full report: 504 avenue Roslyn