Office building · 48,664 sq ft
4100 Rue Molson
Montréal · Rosemont
Municipal assessment 2026
$4,700,000
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
January 20, 2006 20 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.
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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 office building is located at 4100 Rue Molson, in Montréal. Built in 2006 (20 years old), it offers 48,664 sq ft of living space over 4 storeys. The 2026 property assessment sets its value at $4,700,000 (land: $1,177,400, building: $3,522,600), an increase of 5.9% since the previous roll. The lot measures 19,498 sq ft.
The property
- Land use (CUBF)
- Office building
- Type
- Office building
- Non-residential units
- 4
- Living area
- 48,664 sq ft · 4,521 m²
- Number of storeys
- 4
- Year built
- 2006 (actual)
- Lot area
- 19,498 sq ft · 1,811.4 m²
- Roll number
- 9944-85-5773
Financial details
Assessment roll 2026 · market as of July 1, 2024
- Land
- $1,177,400
- Building
- $3,522,600
Total assessment$4,700,000
- Previous roll
- $4,437,800
Change+5.9%
Neighbourhood profile
2021 Census · Statistics CanadaRosemont
The immediate neighbourhood of the property (census dissemination area, about 400 to 700 residents), not all of Montréal.
Population of the immediate area
1,937
4,502 people/km²
Median age
37 years
25.6% aged 0 to 14
Median after-tax income
$115,000
82% higher than in Quebec
Homeowners
92.3%
760 private households
Population trend
+18.3% since 2001All of Montréal · 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 3 municipal drinking water distribution systems in Montréal serve 1,912,518 people out of a population of about 1,915,366. Water source: surface water (Fleuve Saint-Laurent, river).
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 Rue Molson
See the whole street →4100
4100 Rue Molson, Unit 200400
Office buildingAssessed value$6,400,000
4129
4129 Rue Molson
Single-family homeEstimate$585,000
4130
4130 Rue Molson
Single-family homeEstimate$588,000
4050-4056
4050-4056 Rue Molson
Office buildingAssessed value$9,400,000
4051
4051 Rue Molson
Office buildingAssessed value$19,550,000
4200
4200 Rue Molson
Office buildingAssessed value$19,800,000
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™.