639 avenue Roslyn vs 648 avenue Roslyn
Data as of October 29, 2026 · updated every week
639 avenue Roslyn is the older building (1905); 648 avenue Roslyn was built in 1908. 639 avenue Roslyn is assessed at $3,000,000, 26% more than 648 avenue Roslyn ($2,388,000). Neither has a building permit on record. Neither is in a flood zone.
| 639 avenue Roslyn | 648 avenue Roslyn | |
|---|---|---|
| Type | House or building | House or building |
| City and borough | Westmount | Westmount |
| Built | 1905 | 1908 |
| Assessed (roll) | $3,000,000 | $2,388,000 |
| Since the previous roll | 0 % | 0 % |
| Welcome tax on that value | ≈ $43,111 | ≈ $33,931 |
| Lot | 516 m² | 363 m² |
| Floor area | 326 m² | 252 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 | Villa-Maria, 900 m | Villa-Maria, 830 m |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 639 avenue Roslyn Full report: 648 avenue Roslyn