307 avenue Roslyn vs 641 avenue Roslyn
Data as of October 29, 2026 · updated every week
307 avenue Roslyn is the older building (1910); 641 avenue Roslyn was built in 1921. 641 avenue Roslyn is assessed at $2,742,600, 36% more than 307 avenue Roslyn ($2,015,200). Neither has a building permit on record. Neither is in a flood zone.
| 307 avenue Roslyn | 641 avenue Roslyn | |
|---|---|---|
| Type | House or building | House or building |
| City and borough | Westmount | Westmount |
| Built | 1910 | 1921 |
| Assessed (roll) | $2,015,200 | $2,742,600 |
| Since the previous roll | +10 % | 0 % |
| Welcome tax on that value | ≈ $28,339 | ≈ $39,250 |
| Lot | 380 m² | 516 m² |
| Floor area | 191 m² | 420 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 | 3 Note | 2 Note |
| Nearest metro | Vendôme, 690 m | Villa-Maria, 890 m |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 307 avenue Roslyn Full report: 641 avenue Roslyn