2423 avenue de Mayfair vs 4445 avenue de Mayfair
Data as of November 1, 2026 · updated every week
2423 avenue de Mayfair is the older building (1922); 4445 avenue de Mayfair was built in 1935. 4445 avenue de Mayfair is assessed at $1,280,600, 11% more than 2423 avenue de Mayfair ($1,150,000). 2423 avenue de Mayfair has 3 building permits on record, 4445 avenue de Mayfair has 6. Neither is in a flood zone.
| 2423 avenue de Mayfair | 4445 avenue de Mayfair | |
|---|---|---|
| Type | House or building | House or building |
| City and borough | Montréal · Côte-des-Neiges-Notre-Dame-de-Grâce | Montréal · Côte-des-Neiges-Notre-Dame-de-Grâce |
| Built | 1922 | 1935 |
| Assessed (roll) | $1,150,000 | $1,280,600 |
| Since the previous roll | +14 % | +1 % |
| Welcome tax on that value | ≈ $18,576 | ≈ $21,841 |
| Lot | 335 m² | 721 m² |
| Floor area | 190 m² | 197 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 | 3 · Dec 2024 | 6 · Oct 2025 |
| Findings | 1 Serious 2 Check 3 Note | 1 Serious 2 Check 2 Note |
| Nearest metro | Villa-Maria, 2.5 km | Villa-Maria, 2.5 km |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 2423 avenue de Mayfair Full report: 4445 avenue de Mayfair