577 avenue Grosvenor vs 664 avenue Grosvenor
Data as of October 29, 2026 · updated every week
577 avenue Grosvenor is the older building (1909); 664 avenue Grosvenor was built in 1920. 577 avenue Grosvenor is assessed at $2,386,200, 8% more than 664 avenue Grosvenor ($2,213,300). Neither has a building permit on record. Neither is in a flood zone.
| 577 avenue Grosvenor | 664 avenue Grosvenor | |
|---|---|---|
| Type | House or building | House or building |
| City and borough | Westmount | Westmount |
| Built | 1909 | 1920 |
| Assessed (roll) | $2,386,200 | $2,213,300 |
| Since the previous roll | 0 % | +19 % |
| Welcome tax on that value | ≈ $33,904 | ≈ $31,310 |
| Lot | 309 m² | 367 m² |
| Floor area | 232 m² | 219 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 | Villa-Maria, 930 m | Villa-Maria, 720 m |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 577 avenue Grosvenor Full report: 664 avenue Grosvenor