604 avenue Grosvenor vs 646 avenue Grosvenor
Data as of October 29, 2026 · updated every week
646 avenue Grosvenor is the older building (1910); 604 avenue Grosvenor was built in 1911. 646 avenue Grosvenor is assessed at $2,218,900, 14% more than 604 avenue Grosvenor ($1,941,100). Neither has a building permit on record. Neither is in a flood zone.
| 604 avenue Grosvenor | 646 avenue Grosvenor | |
|---|---|---|
| Type | House or building | House or building |
| City and borough | Westmount | Westmount |
| Built | 1911 | 1910 |
| Assessed (roll) | $1,941,100 | $2,218,900 |
| Since the previous roll | +19 % | +19 % |
| Welcome tax on that value | ≈ $27,227 | ≈ $31,394 |
| Lot | 320 m² | 377 m² |
| Floor area | 271 m² | 264 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 | 2 Note | 1 Note |
| Nearest metro | Villa-Maria, 820 m | Villa-Maria, 750 m |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 604 avenue Grosvenor Full report: 646 avenue Grosvenor