422-424 avenue Grosvenor vs 666 avenue Grosvenor
Data as of October 29, 2026 · updated every week
422-424 avenue Grosvenor is the older building (1908); 666 avenue Grosvenor was built in 1920. 666 avenue Grosvenor is assessed at $2,035,900, 44% more than 422-424 avenue Grosvenor ($1,411,400). Neither has a building permit on record. Neither is in a flood zone.
| 422-424 avenue Grosvenor | 666 avenue Grosvenor | |
|---|---|---|
| Type | 2 dwellings | House or building |
| City and borough | Westmount | Westmount |
| Built | 1908 | 1920 |
| Assessed (roll) | $1,411,400 | $2,035,900 |
| Since the previous roll | 0 % | +19 % |
| Welcome tax on that value | ≈ $19,282 | ≈ $28,649 |
| Lot | 259 m² | 367 m² |
| Floor area | 292 m² | 217 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 | 2 Note |
| Nearest metro | Vendôme, 670 m | Villa-Maria, 720 m |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 422-424 avenue Grosvenor Full report: 666 avenue Grosvenor