331 avenue Lansdowne vs 646 avenue Lansdowne
Data as of October 29, 2026 · updated every week
331 avenue Lansdowne is the older building (1910); 646 avenue Lansdowne was built in 1921. 331 avenue Lansdowne is assessed at $3,696,000, 64% more than 646 avenue Lansdowne ($2,257,100). Neither has a building permit on record. Neither is in a flood zone.
| 331 avenue Lansdowne | 646 avenue Lansdowne | |
|---|---|---|
| Type | House or building | House or building |
| City and borough | Westmount | Westmount |
| Built | 1910 | 1921 |
| Assessed (roll) | $3,696,000 | $2,257,100 |
| Since the previous roll | +10 % | 0 % |
| Welcome tax on that value | ≈ $53,551 | ≈ $31,967 |
| Lot | 810 m² | 393 m² |
| Floor area | 477 m² | 220 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 | Vendôme, 800 m | Villa-Maria, 920 m |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 331 avenue Lansdowne Full report: 646 avenue Lansdowne