425 avenue Roslyn vs 511 avenue Roslyn
Data as of October 29, 2026 · updated every week
511 avenue Roslyn is the older building (1899); 425 avenue Roslyn was built in 1910. 511 avenue Roslyn is assessed at $7,486,300, 72% more than 425 avenue Roslyn ($4,340,200). Neither has a building permit on record. Neither is in a flood zone.
| 425 avenue Roslyn | 511 avenue Roslyn | |
|---|---|---|
| Type | House or building | House or building |
| City and borough | Westmount | Westmount |
| Built | 1910 | ≈ 1899 |
| Assessed (roll) | $4,340,200 | $7,486,300 |
| Since the previous roll | 0 % | 0 % |
| Welcome tax on that value | ≈ $63,214 | ≈ $110,405 |
| Lot | 619 m² | 1,016 m² |
| Floor area | 358 m² | 662 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, 800 m | Vendôme, 910 m |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 425 avenue Roslyn Full report: 511 avenue Roslyn