470 avenue Roslyn vs 509 avenue Roslyn
Data as of October 29, 2026 · updated every week
470 avenue Roslyn is the older building (1965); 509 avenue Roslyn was built in 1980. 470 avenue Roslyn is assessed at $3,642,900, 35% more than 509 avenue Roslyn ($2,708,400). Neither has a building permit on record. Neither is in a flood zone.
| 470 avenue Roslyn | 509 avenue Roslyn | |
|---|---|---|
| Type | House or building | House or building |
| City and borough | Westmount | Westmount |
| Built | 1965 | 1980 |
| Assessed (roll) | $3,642,900 | $2,708,400 |
| Since the previous roll | 0 % | 0 % |
| Welcome tax on that value | ≈ $52,754 | ≈ $38,737 |
| Lot | 467 m² | 499 m² |
| Floor area | 290 m² | 299 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 | 2 Note |
| Nearest metro | Vendôme, 780 m | Vendôme, 890 m |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 470 avenue Roslyn Full report: 509 avenue Roslyn