21 De Casson Road vs 4 De Casson Road
Data as of October 29, 2026 · updated every week
4 De Casson Road is the older building (1926); 21 De Casson Road was built in 1927. 21 De Casson Road is assessed at $2,218,400, 26% more than 4 De Casson Road ($1,763,700). Neither has a building permit on record. Neither is in a flood zone.
| 21 De Casson Road | 4 De Casson Road | |
|---|---|---|
| Type | House or building | House or building |
| City and borough | Westmount | Westmount |
| Built | 1927 | 1926 |
| Assessed (roll) | $2,218,400 | $1,763,700 |
| Since the previous roll | +11 % | +11 % |
| Welcome tax on that value | ≈ $31,387 | ≈ $24,566 |
| Lot | 337 m² | 249 m² |
| Floor area | 240 m² | 221 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 | 2 Note |
| Nearest metro | Atwater, 460 m | Atwater, 400 m |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 21 De Casson Road Full report: 4 De Casson Road