Water treatment plant · 142,451 sq ft
20 Rue Châteauguay
Longueuil · Vieux-Longueuil
Municipal assessment 2025
$4,540,300
We do not estimate the market value of a property of type “Water treatment plant”. 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 14, 2009 17 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 water treatment plant is located at 20 Rue Châteauguay, in Longueuil. The 2026 property assessment sets its value at $4,540,300 (land: $2,134,800, building: $2,405,500), an increase of 40.5% since the previous roll. The lot measures 142,451 sq ft.
The property
- Land use (CUBF)
- Water treatment plant
- Type
- Water treatment plant
- Non-residential units
- 1
- Number of storeys
- 2
- Lot area
- 142,451 sq ft · 13,234.1 m²
- Frontage
- 183.5 m
- Roll number
- 0343-47-3503
Financial details
Assessment roll 2025 · market as of July 1, 2023
- Land
- $2,134,800
- Building
- $2,405,500
Total assessment$4,540,300
- Previous roll
- $3,232,200
Change+40.5%
Neighbourhood profile
2021 Census · Statistics CanadaVieux-Longueuil
The immediate neighbourhood of the property (census dissemination area, about 400 to 700 residents), not all of Longueuil.
Population of the immediate area
661
12,018 people/km²
Median age
66 years
6.8% aged 0 to 14
Median after-tax income
$36,000
43% lower than in Quebec
Homeowners
12.5%
425 private households
Population trend
+16.4% since 2001All of Longueuil · 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 Longueuil serve 249,337 people out of a population of about 268,530. 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 Montérégie region, homes tested by Health Canada had a median concentration of 57 Bq/m³, and 8.2% exceeded the Canadian guideline of 200 Bq/m³, out of 110 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 Châteauguay
See the whole street →35
35 Rue Châteauguay
Apartment building (6 units)Estimate$1,263,000
Rue Châteauguay
Undeveloped and unused land (excluding non-commercial forest use)Assessed value$8,800
Rue Châteauguay
Undeveloped and unused land (excluding non-commercial forest use)Assessed value$166,300
Rue Châteauguay
Undeveloped and unused land (excluding non-commercial forest use)Assessed value$166,300
Rue Châteauguay
ResidentialEstimate$428,000
140
140 Rue Châteauguay
Single-family homeEstimate$958,500
Data transparency
Public data
Quebec property assessment roll 2025 (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™.