Condominium · 327,739 sq ft
1-4 Sq Westmount
Westmount · Autour de la rue Sainte-Catherine et de l’avenue Greene
Also on the assessment roll as: 1-3 Sq Westmount, Westmount
Municipal assessment 2026
$69,700,000
We do not estimate the market value of a property of type “Office building”. Our model learns from residential transactions, and the value of such a property depends mainly on the income it generates.
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Ownership history
Last change of ownership
August 25, 2017 9 years ago
Date the current owner was entered on the assessment roll. It is most often a sale, but an estate settlement, a gift or a new construction produces the same entry.
Source: property assessment roll (MAMH). Transaction amounts are not published on the roll; they appear in the Registre foncier du Québec (Quebec land register).
Comparable sales
Three recent sales in the area, with the price actually paid.
The assessment roll gives dates, never amounts. We look up in the Quebec land register (Registre foncier du Québec) what three comparable properties recently sold for, and what this address cost.
- Comparable 1Sold · immediate area
- Comparable 2Sold · immediate area
- Comparable 3Sold · immediate area
By email, within 24 hours.
Includes the last sale registered at this address.
This property isn’t for sale. Be the first to know if it is.
Surroundings and accessibility
Wired high-speed internet available in the area50/10 Mbps or more · Based on ISED data for the area. Actual service varies by provider.
Description
This condominium is located at 1-4 Sq Westmount, in Westmount. Built in 1966 (60 years old), it offers 327,739 sq ft of living space. The 2026 property assessment sets its value at $69,700,000 (land: $30,640,400, building: $39,059,600), a decrease of 12.3% since the previous roll. The lot measures 73,291 sq ft.
The property
- Land use (CUBF)
- Office building
- Type
- Condominium
- Non-residential units
- 109
- Living area
- 327,739 sq ft · 30,448 m²
- Year built
- 1966 (actual)
- Lot area
- 73,291 sq ft · 6,809 m²
- Roll number
- 9738-96-2301-001-0001
Financial details
Assessment roll 2026 · market as of July 1, 2024
- Land
- $30,640,400
- Building
- $39,059,600
Total assessment$69,700,000
- Previous roll
- $79,500,000
Change-12.3%
Estimated municipal taxes≈ $456,400 / year
Estimate based on the municipality’s overall tax rate, as published by Quebec’s Ministère des Affaires municipales et de l’Habitation (MAMH). The actual bill varies with the rates for each property category and with flat fees (water, waste collection, etc.), so check with the municipality.
Neighbourhood profile
2021 Census · Statistics CanadaAround rue Sainte-Catherine and avenue Greene
The immediate neighbourhood of the property (census dissemination area, about 400 to 700 residents), not all of Westmount. Dissemination areas have no official name: the landmark above comes from the streets within the area.
Population of the immediate area
782
12,862 people/km²
Median age
71 years
4.5% aged 0 to 14
Median after-tax income
$90,000
42% higher than in Quebec
Homeowners
51.9%
490 private households
Population trend
+1.6% since 2001All of Westmount · annual estimates from the ISQ
Population estimates as of July 1, Institut de la statistique du Québec (ISQ) (2001-2025). Recent years are revised or preliminary.
Data from Statistics Canada’s 2021 Census, aggregated for the property’s statistical area (dissemination area) and not for the property itself. The bar shows the difference from the Quebec average. Values suppressed for confidentiality reasons are not shown.
Water supply
The municipal drinking water distribution system in Westmount serves 20,687 people out of a population of about 20,377. Water source: surface water (Fleuve Saint-Laurent).
Source: directory of municipal drinking water distribution systems, Quebec Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs. The directory describes where the water comes from and the size of each system; it contains no test results and does not say which addresses are connected.
Radon
In the Montréal region, homes tested by Health Canada had a median concentration of 26 Bq/m³, and 6.8% exceeded the Canadian guideline of 200 Bq/m³, out of 74 measurements.
This figure describes a region, not this property. Radon is a natural gas that comes from the ground, but its concentration in a home depends on cracks in the foundation, the drainage and the ventilation: two neighbouring houses can differ by a factor of ten. Only a long-term test on site gives the actual concentration. Test kits cost a few dozen dollars and must stay in place for at least three months during the heating season.
Source: Cross-Canada Survey of Radon Concentrations in Homes, Health Canada, long-term measurements collected from 2009 to 2011. It is the most recent survey published at this scale.
Other properties on Sq Westmount
See the whole street →Westmount has 1,311 properties classified as condominium on the property assessment roll.
2-3
2-3 Sq Westmount
CondominiumEstimate$210,643,500
Avenue Westmount
General recreation parkAssessed value$72,567,500
4326
4326 Avenue Westmount
Single-family homeEstimate$5,525,500
4330
4330 Avenue Westmount
Single-family homeEstimate$4,894,000
4332
4332 Avenue Westmount
Single-family homeEstimate$7,482,000
4333
4333 Avenue Westmount
Single-family homeEstimate$7,843,000
Data transparency
Public data
Quebec property assessment roll 2026 (MAMH, open data). Owner names and cadastral data are redacted at the source.
Ubeestimate™ valuation
Statistical model adjusted for the local market, the building’s characteristics and the neighbourhood context. The property is assumed to be in standard condition.
Disclaimer
These estimates do not replace a professional appraisal and are not binding on Ubeestimate™.