The real estate market in Châteauguay in September 2026: days on market, inventory, prices and verdict over twelve months (Centris)

Real estate market · Châteauguay · September 2026

The real estate market in Châteauguay month by month from October 2025 to September 2026: days on market, sold against asking price, active houses and new listings, then months of inventory and the verdict (seller's, balanced, buyer's). Centris data, nothing estimated.

In Châteauguay, in September 2026, a house sold in 32 days in median, at 98% of the asking price, with 165 houses active on Centris. Compared with June, days on market are up by 13 days and inventory is roughly flat (+2%). Compared with October 2025, the start of the window, days on market are up by 18 days and inventory is up 25%. At 4.3 months of inventory (approximation: 165 active houses for about 38.0 sales a month in 2026), it is a balanced market; Châteauguay ranks 32nd of 50 cities, from the tightest market to the slowest. Source: Centris (Matrix), read September 16, 2026, compiled October 13, 2026.

The short answer

In Châteauguay, in September 2026, a house sold in 32 days in median, at 98% of the asking price, with 165 houses active on Centris. Compared with June, days on market are up by 13 days and inventory is roughly flat (+2%). Compared with October 2025, the start of the window, days on market are up by 18 days and inventory is up 25%. At 4.3 months of inventory (approximation: 165 active houses for about 38.0 sales a month in 2026), it is a balanced market; Châteauguay ranks 32nd of 50 cities, from the tightest market to the slowest.

The past twelve months in Châteauguay, month by month

Single-family category, municipality of Châteauguay, Centris (Matrix), read September 16, 2026. September 2026: data from September 1 to 16 (month in progress). Days on market = days between listing and accepted offer, median of the month's sales; ratio = sold price ÷ asking price, median.

What the twelve months say

• Days on market: the fastest of the twelve months was April 2026 (10 days), the slowest August 2026 (44 days); median of the twelve months, 16 days. September (32 days) is above the twelve-month median.
• Inventory: 104 active houses at the low (December 2025), 165 at the peak (September 2026). September is the peak of the twelve months: there have never been as many houses for sale in the window.
• New listings: 686 houses put up for sale from October 2025 to August 2026 (eleven full months), the busiest month being April 2026 (83) and the quietest December 2025 (25). August (59) is below June (67); September (30) covers only the first 16 days of the month.
• Price: houses sold at 98% of asking in September, -1 point from June; over the twelve months, none of the 12 months closed above asking (ratio of 100% or more), the highest in October 2025 (99%). The median price of a house in Châteauguay is $520,000 in 2026 to date (342 sales from January to September) against $524,800 in 2025 (467 sales), -0.9%.
• Across the 50 cities tracked, the September median is 16 days (June: 14 days; October 2025: 12 days); it lengthened since June in 30 cities and doubled in 7. September inventory is higher than June in 39 cities and higher than October 2025 in 44; it is at its twelve-month peak in 24 cities. 26 cities are in a seller's market, 20 in a balanced market, 4 in a buyer's market.

Months of inventory and verdict: a balanced market

Rule: under 4 months of inventory = seller's market, 4 to 6 months = balanced market, over 6 months = buyer's market. Calculation in Châteauguay: 165 active houses in September ÷ (342 sales in 2026 ÷ 9 months = 38.0 sales a month) = 4.3 months. Verdict: a balanced market. It is an approximation: 2026 sales stop on September 16 and are divided by nine full months, which nudges the result slightly upward; the actual pace of September may differ from the year's average. Châteauguay ranks 32nd of 50, from the tightest market to the slowest (median of cities: 3.9 months).

What it changes for selling in Châteauguay

In Châteauguay, the market no longer leans clearly: 4.3 months of inventory, between 4 and 6 months, with 165 active houses and 32 days of median days on market. Days on market are lengthening (+13 days since June): a seller has to price right from the first day, because buyers compare 165 houses and the 98% ratio shows they no longer pay above asking. The first two weeks decide: a house with no offer after fifteen days is listed too high for this market.

What it changes for buying in Châteauguay

To buy in Châteauguay, this is when both sides meet: there is choice (165 active houses), time to visit without rushing, and a margin for negotiation that exists but stays thin (98% of asking in median). An offer conditional on inspection and financing is accepted again; an offer well below asking, not yet.

How to read these figures

The four columns of the table are read together: days on market lengthening while inventory rises is a market loosening; days on market lengthening while inventory is flat is often an asking price set too high. The sold ÷ asking ratio says whether the buyer pays the listed price (100%), above it (bidding) or below it (negotiation). Centris (Matrix) data read September 16, 2026, September 2026 partial (to the 16th), Single-family category, municipality of Châteauguay.

Frequently asked questions

Is it a seller's or a buyer's market in Châteauguay in September 2026?

In September 2026, in Châteauguay, it is a balanced market: 4.3 months of inventory (165 active houses for about 38.0 sales a month), under the rule under 4 months of inventory = seller's market, 4 to 6 months = balanced market, over 6 months = buyer's market. Châteauguay ranks 32nd of 50 cities, from the tightest market to the slowest; the median of cities is 3.9 months.

How long does it take to sell a house in Châteauguay right now?

32 days in median in September 2026 (to the 16th), against 19 days in June and 14 days in October 2025. Over the past twelve months, days on market ranged from 10 days (April 2026) to 44 days (August 2026). The ten-year series is in days on market in Châteauguay 2016-2026.

Are houses selling above asking in Châteauguay?

Not in median: in September 2026, houses sold at 98% of asking. Over the past twelve months, none of the 12 months showed a ratio of 100% or more in Châteauguay; the highest was October 2025 (99%), the lowest January 2026 (98%). The history is in sold over asking in Châteauguay.

How much does a house cost in Châteauguay in 2026?

The median price of a house sold in Châteauguay is $520,000 in 2026 to date (January to September 16, 342 sales), against $524,800 for all of 2025 (467 sales): -0.9%. The ten-year price is in home prices in Châteauguay 2016-2026.

Source: Centris (Matrix), Statistics module, Single-family category, municipality of Châteauguay, read September 16, 2026: median days on market and sold ÷ asking ratio by month, active and new listings by month (October 2025 to September 2026), median price and number of sales by year (2026 = cumulative to September 16); compiled by the Loaa & Manseur team, aggregates only. Months of inventory are the team's calculation, not a Centris measure. The the real estate market of 50 cities in September 2026 hub compares the 50 cities.

Our proof, not our promises

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Also available in French: version française de ce guide.

Published September 7, 2026 by the Loaa & Manseur team, the number 1 team at RE/MAX Platine in 2024 and 2025, 6th RE/MAX team in Quebec, 15th in Canada and in the global top 50 according to the official RE/MAX ranking. Tell us about your project.