8421-8423 9e Avenue vs 8510-8512 9e Avenue
Data as of November 1, 2026 · updated every week
8421-8423 9e Avenue is the older building (1949); 8510-8512 9e Avenue was built in 1958. 8421-8423 9e Avenue is assessed at $711,900, 38% more than 8510-8512 9e Avenue ($517,100). 8421-8423 9e Avenue has 5 building permits on record, 8510-8512 9e Avenue has 0. Neither is in a flood zone.
| 8421-8423 9e Avenue | 8510-8512 9e Avenue | |
|---|---|---|
| Type | 2 dwellings | 2 dwellings |
| City and borough | Montréal · Villeray-Saint-Michel-Parc-Extension | Montréal · Villeray-Saint-Michel-Parc-Extension |
| Built | 1949 | 1958 |
| Assessed (roll) | $711,900 | $517,100 |
| Since the previous roll | +10 % | +19 % |
| Welcome tax on that value | ≈ $9,587 | ≈ $5,867 |
| Lot | 400 m² | 200 m² |
| Floor area | 253 m² | 183 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 | 5 · Aug 2023 | 0 |
| Findings | 1 Serious 4 Note | 4 Note |
| Nearest metro | Saint-Michel, 1.4 km | Saint-Michel, 1.5 km |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 8421-8423 9e Avenue Full report: 8510-8512 9e Avenue