423 avenue Grosvenor vs 504 avenue Grosvenor
Data as of October 29, 2026 · updated every week
504 avenue Grosvenor is the older building (1898); 423 avenue Grosvenor was built in 1900. 423 avenue Grosvenor is assessed at $1,409,000, 11% more than 504 avenue Grosvenor ($1,267,600). Neither has a building permit on record. Neither is in a flood zone.
| 423 avenue Grosvenor | 504 avenue Grosvenor | |
|---|---|---|
| Type | House or building | 2 dwellings |
| City and borough | Westmount | Westmount |
| Built | ≈ 1900 | ≈ 1898 |
| Assessed (roll) | $1,409,000 | $1,267,600 |
| Since the previous roll | 0 % | 0 % |
| Welcome tax on that value | ≈ $19,246 | ≈ $17,125 |
| Lot | 199 m² | 258 m² |
| Floor area | 193 m² | 242 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 | 2 Note |
| Nearest metro | Vendôme, 690 m | Vendôme, 760 m |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 423 avenue Grosvenor Full report: 504 avenue Grosvenor