Châteauguay or Saint-Laurent: comparison for buyers
Choose two or three cities from my guides. The figures come from the same sources as the guides.
Median prices
| Châteauguay | Saint-Laurent |
|---|
| Single-family home |
$540,00092 sales · +2% year over year
|
$880,00061 sales · +3% year over year
|
|---|
| Condo |
last 4 quarters$383,45063 sales · +5% year over year
|
$463,500100 sales · -2% year over year
|
|---|
| Plex (2 to 5 units) |
—No published median
|
last 4 quarters$889,87580 sales · -1% year over year
|
|---|
Median price = half of the properties sold for less, the other half for more. The price of a specific property varies.
Source: Centris, Q3 2026 (July to September).
Châteauguay: City of Châteauguay, Q3 2026 (July to September), change compared with the same quarter of 2025. For condos, Centris does not publish a quarterly price due to too few transactions: the figures cover the last four quarters. For plexes, the number of sales (22 over four quarters) is too low for Centris to publish a median price. (Centris – Châteauguay statistics)
Saint-Laurent: Borough of Saint-Laurent, Q3 2026 (July to September), change compared with the same quarter of 2025. For plexes, Centris does not publish a quarterly price due to too few transactions (16 sales): the figures cover the last four quarters. (Centris – Saint-Laurent statistics)
At a glance
Châteauguay
- Population (2021 census)
- 50,815 residents (+6.1% since 2016)
- Occupied private dwellings (2021)
- 19,917
- Average home value (2026 budget)
- $495,043
Saint-Laurent
- Population (2021 census)
- 102,104 residents (+3% since 2016)
- Area
- 43 km², about 70% of it industrial or commercial
- Jobs in the borough
- About 108,000 (Ville de Montréal)
Transit
Châteauguayexo buses leave from the Châteauguay terminus for Angrignon metro station and, at rush hour, for downtown Montréal (Terminus Centre-ville). Highway 30 crosses the city. To reach Montréal, Route 138 leads to the Honoré-Mercier Bridge; an eastbound reserved lane helps avoid part of the congestion on the approach to the bridge.
Saint-LaurentThe metro’s orange line serves the Du Collège and Côte-Vertu stations; Côte-Vertu is also a major bus terminus. Since November 17, 2025, the REM has stopped at the Côte-de-Liesse, Montpellier, Du Ruisseau and Bois-Franc stations; according to the REM, the trip from Bois-Franc to Gare Centrale takes about 16 minutes. Bois-Franc (about 740 spaces) and Du Ruisseau (more than 1,000 spaces) have park-and-ride lots. Since January 12, 2026, the exo 15 Mascouche line has ended at Côte-de-Liesse station, with a connection to the REM. According to the REM, the airport branch is scheduled to open in 2027; it will add Marie-Curie station.
Education
ChâteauguayCentre de services scolaire des Grandes-Seigneuries for French-language education and New Frontiers School Board for English-language education (including Howard S. Billings Regional High School, in Châteauguay). There is no cégep in Châteauguay; an exo bus line (90) serves Cégep André-Laurendeau, in LaSalle, at weekday rush hours.
Saint-LaurentCentre de services scolaire Marguerite-Bourgeoys for French-language education and English Montreal School Board (EMSB) for English-language education. Two cégeps in the borough: Cégep de Saint-Laurent and Vanier College.
Health
ChâteauguayHôpital Anna-Laberge, on boulevard Brisebois (Santé Québec – Montérégie-Ouest): emergency department open 24 hours a day, birthing centre, pediatrics, surgery and oncology.
Saint-LaurentCLSC de Saint-Laurent (CIUSSS du Nord-de-l’Île-de-Montréal). The nearest hospital is Hôpital du Sacré-Cœur-de-Montréal, in the neighbouring borough of Ahuntsic-Cartierville.
Welcome tax
ChâteauguayChâteauguay applies an additional bracket: 0.5% up to $62,900, 1% up to $315,000, 1.5% up to $615,600, then 3% on the portion above $615,600 (rates in effect since January 1, 2026, for information only). For a house at the median price of $540,000, below this threshold, that comes to about $6,211, the same as with Québec’s base rates. The City requires payment in a single instalment, within 30 days of the bill.
Saint-LaurentSaint-Laurent is part of the City of Montréal, so Montréal’s rates apply. In 2026: 0.5% up to $62,900, 1% up to $315,000, 1.5% up to $552,300, 2% up to $1,104,700, then 2.5%, 3.5% and 4% above $3,113,000 (rates as of October 2026, for information only). For a house at the median price of $880,000, that comes to about $12,949. Ville de Montréal programs, such as RénoPlex, also apply.
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