405-831 avenue Rockland vs 870 avenue Rockland
Data as of November 1, 2026 · updated every week
405-831 avenue Rockland is the older building (1934); 870 avenue Rockland was built in 1952. 405-831 avenue Rockland is assessed at $1,846,800 and 870 avenue Rockland at $773,900; one is a whole condo building, so the values do not compare directly. 405-831 avenue Rockland has 7 building permits on record, 870 avenue Rockland has 9. Neither is in a flood zone.
| 405-831 avenue Rockland | 870 avenue Rockland | |
|---|---|---|
| Type | Condo unit | Condo building, 1 unit |
| City and borough | Montréal · Outremont | Montréal · Outremont |
| Built | 1934 | 1952 |
| Assessed (roll) | $1,846,800 | $773,900 |
| Since the previous roll | +14 % | — |
| Welcome tax on that value | ≈ $35,996 | ≈ $10,827 |
| Lot | — | — |
| Floor area | 165 m² | 104 m² |
| Notice of deterioration | No | No |
| City’s right of first refusal | No | No |
| Heritage | Yes | No |
| In a flood zone | No | No |
| Building permits on record | 7 · May 2026 | 9 · Jul 2026 |
| Findings | 2 Check 5 Note | 1 Check 4 Note |
| Nearest metro | Outremont, 420 m | Outremont, 490 m |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 405-831 avenue Rockland Full report: 870 avenue Rockland