487 avenue Grosvenor vs 580 avenue Grosvenor
Data as of October 29, 2026 · updated every week
487 avenue Grosvenor is the older building (1907); 580 avenue Grosvenor was built in 1915. 580 avenue Grosvenor is assessed at $3,350,000, 110% more than 487 avenue Grosvenor ($1,599,000). Neither has a building permit on record. Neither is in a flood zone.
| 487 avenue Grosvenor | 580 avenue Grosvenor | |
|---|---|---|
| Type | House or building | House or building |
| City and borough | Westmount | Westmount |
| Built | 1907 | 1915 |
| Assessed (roll) | $1,599,000 | $3,350,000 |
| Since the previous roll | 0 % | 0 % |
| Welcome tax on that value | ≈ $22,096 | ≈ $48,361 |
| Lot | 206 m² | 498 m² |
| Floor area | 169 m² | 418 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, 790 m | Villa-Maria, 880 m |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 487 avenue Grosvenor Full report: 580 avenue Grosvenor