488 avenue Mountain vs 491 avenue Mountain
Data as of October 29, 2026 · updated every week
488 avenue Mountain is the older building (1913); 491 avenue Mountain was built in 1955. 491 avenue Mountain is assessed at $3,283,000, 55% more than 488 avenue Mountain ($2,114,300). Neither has a building permit on record. Neither is in a flood zone.
| 488 avenue Mountain | 491 avenue Mountain | |
|---|---|---|
| Type | House or building | House or building |
| City and borough | Westmount | Westmount |
| Built | 1913 | 1955 |
| Assessed (roll) | $2,114,300 | $3,283,000 |
| Since the previous roll | +8 % | +11 % |
| Welcome tax on that value | ≈ $29,825 | ≈ $47,356 |
| Lot | 351 m² | 767 m² |
| Floor area | 258 m² | 248 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 | Atwater, 890 m | Atwater, 880 m |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 488 avenue Mountain Full report: 491 avenue Mountain