Municipal assessment in Châteauguay: property roll, taxes and market value
In 2026, the median municipal assessment in Châteauguay is $471,550 (houses and plexes, condominiums not included), across 14,762 properties on the roll. The general property tax rate is $0.5893 per $100 (2025 rate).
- Properties on the roll (houses and plexes, condominiums not included)
- 14,762
- Median assessment (2026 roll)
- $471,550
- Median land value
- $195,100
- Median building value
- $277,800
- Median year of construction
- 1972
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Estimated market value
$485,697 (indicative estimate)
Indicative estimate: $471,550 × comparative factor 1.03 = $485,697. The comparative factor published by the Ministère des Affaires municipales measures the gap between roll values and recent sale prices; it brings an assessment filed a few years ago back to current market conditions.
General property tax
For a roll value of $471,550:
| General property tax ($0.5893 per $100 (2025 rate)) | $2,779 |
|---|---|
| School tax ($0.079 per $100) | $372 |
| Annual total | $3,151 |
Excluding service charges (water, sewers, waste collection, public transit) and special taxes, which are added to the bill and vary from one municipality to another.
2025 rate.
Welcome tax (taxe de bienvenue) calculator
Transfer duties on a purchase at $471,550: $5,184.
Scale adopted by Châteauguay.
Housing stock by decade of construction
| Decade | Properties | Share |
|---|---|---|
| Before 1940 | 299 | 2% |
| 1940–1949 | 317 | 2.1% |
| 1950–1959 | 2,130 | 14.4% |
| 1960–1969 | 4,051 | 27.4% |
| 1970–1979 | 2,434 | 16.5% |
| 1980–1989 | 1,850 | 12.5% |
| 1990–1999 | 1,023 | 6.9% |
| 2000–2009 | 1,462 | 9.9% |
| 2010–2019 | 978 | 6.6% |
| 2020–2029 | 218 | 1.5% |
Regional market — Montérégie
34,497 sales over 12 months (July 2025 to June 2026), a change of 3.1% year over year. Market is hot.
What the numbers say in Châteauguay
In Châteauguay, the 2026 roll counts 14,762 properties (houses and plexes, condominiums not included), with a median assessment of $471,550 ($429,300 at the 25th percentile, $542,000 at the 75th).
Land accounts for about 41% of the median value, the building for the rest; the housing stock was built around 1972.
Regional market (Montérégie): hot, 34,497 sales over 12 months, a change of 3.1% year over year (July 2025 to June 2026).
Frequently asked questions
What is the median municipal assessment in Châteauguay?
In 2026, the median municipal assessment in Châteauguay is $471,550 (houses and plexes, condominiums not included), across 14,762 properties on the roll. The general property tax rate is $0.5893 per $100 (2025 rate).
How much municipal tax for a median house in Châteauguay?
With a residential rate of $0.5893 per $100 (2025 rate), a property assessed at $471,550 pays about $2,779 in general property tax and $372 in school tax, for $3,151 a year. Excluding service charges (water, sewers, waste collection, public transit) and special taxes, which are added to the bill and vary from one municipality to another.
What is the welcome tax (taxe de bienvenue) in Châteauguay?
On a purchase at the median assessment ($471,550), transfer duties amount to about $5,184, based on the scale adopted by the municipality.
Does the municipal assessment match market value?
Not exactly. In Châteauguay, the comparative factor of 1.03 suggests an indicative market value of about $485,697 for a property assessed at the median.
Where does this data come from?
From the property assessment roll published by the Ministère des Affaires municipales et de l'Habitation (2026 roll), aggregated over 14,762 properties (houses and plexes, condominiums not included). No address or individual value is published on this page. Divided co-ownership (condominium) units are not included in these statistics.
Source and methodology
2026 property assessment roll from the Ministère des Affaires municipales et de l'Habitation, aggregated over 14,762 properties (houses and plexes, condominiums not included) in Châteauguay (code 67050). Calculations performed on 2026-09-20. Divided co-ownership (condominium) units are not included in these statistics.
Cite this data: free to reuse with a link to Evaloria.