21 avenue Nelson vs 57 avenue Nelson
Data as of October 29, 2026 · updated every week
57 avenue Nelson is the older building (1912); 21 avenue Nelson was built in 1939. 57 avenue Nelson is assessed at $2,728,400, 45% more than 21 avenue Nelson ($1,882,300). 21 avenue Nelson has 1 building permits on record, 57 avenue Nelson has 2. Neither is in a flood zone.
| 21 avenue Nelson | 57 avenue Nelson | |
|---|---|---|
| Type | House or building | House or building |
| City and borough | Montréal · Outremont | Montréal · Outremont |
| Built | 1939 | 1912 |
| Assessed (roll) | $1,882,300 | $2,728,400 |
| Since the previous roll | +6 % | +8 % |
| Welcome tax on that value | ≈ $36,883 | ≈ $63,955 |
| Lot | 465 m² | 275 m² |
| Floor area | 173 m² | 194 m² |
| Notice of deterioration | No | No |
| City’s right of first refusal | No | No |
| Heritage | Yes | Yes |
| In a flood zone | No | No |
| Building permits on record | 1 · Jun 2022 | 2 · Apr 2019 |
| Findings | 1 Serious 1 Check 3 Note | 2 Check 4 Note |
| Nearest metro | Mont-Royal, 1.2 km | Côte-Des-Neiges, 840 m |
The full report for each address explains every finding and shows the full permit and value history.