Plex prices · Châteauguay · Centris 2016-2026
The median price of a plex in Châteauguay year by year since 2016, next to the house and the condo of the same city: the frenzy, the rate brake, the record year, and what the plex-to-house ratio tells a buyer. Centris figures, not estimates.
In Châteauguay, a plex sells for $728,500 at the median in 2026 (January to mid-September), against $240,000 in 2016: +204% in ten years, one of the strongest increases among the 31 cities tracked (median +116%). Single-family houses did +144% over the same period ($213,000 to $520,000): the plex rose faster than houses, and it is now worth 1.40 times a house ($208,500 more). Record year: 2026 ($728,500). Source: Centris (Matrix), compiled September 30, 2026.
The short answer
In Châteauguay, a plex sells for $728,500 at the median in 2026 (January to mid-September), against $240,000 in 2016: +204% in ten years, one of the strongest increases among the 31 cities tracked (median +116%). Single-family houses did +144% over the same period ($213,000 to $520,000): the plex rose faster than houses, and it is now worth 1.40 times a house ($208,500 more). Record year: 2026 ($728,500).
Median plex price per year, next to houses and condos
| Year | Plex, median price | Plex sales | House, median price | Condo, median price | Plex ÷ house |
|---|---|---|---|---|---|
| 2016 | $240,000 | 17 | $213,000 | $175,430 | 1.13 |
| 2017 | $310,000 | 25 | $230,000 | $175,000 | 1.35 |
| 2018 | $325,000 | 23 | $238,000 | $181,950 | 1.37 |
| 2019 | $311,000 | 32 | $265,000 | $180,000 | 1.17 |
| 2020 | $412,000 | 32 | $314,000 | $203,000 | 1.31 |
| 2021 | $415,000 | 47 | $404,450 | $295,500 | 1.03 |
| 2022 | $541,000 | 33 | $470,000 | $315,000 | 1.15 |
| 2023 | $545,000 | 14 | $450,000 | $331,000 | 1.21 |
| 2024 | $585,000 | 27 | $466,000 | $335,000 | 1.26 |
| 2025 | $641,000 | 31 | $524,800 | $375,000 | 1.22 |
| 2026 (Jan. to mid-Sep.) | $728,500 | 18 | $520,000 | $390,000 | 1.40 |
Plex sales closed on Centris from 2016 to September 16, 2026: 299. Plexes sell less often than houses: their median moves more from one year to the next. Read the plateaus, not a single year.
What ten years of prices say in Châteauguay
- Four markets in ten years in Châteauguay: $310,500 median price in 2016-2019, $415,000 during the 2020-2022 frenzy, $565,000 when high rates returned, $684,750 today.
- The frenzy: +74% between 2019 and 2022 ($311,000 to $541,000). Then 2023 still gained +1%: the rate hikes did not push plex prices down in Châteauguay.
- Record year: 2026 ($728,500); lowest year: 2016 ($240,000). 1 year of decline out of ten: 2019.
- Plex versus house: a plex was worth 1.13 times a house in 2016 and 1.40 times in 2026. The gap widened: the plex is more sought after than before in Châteauguay. The plex was pricier than a house in 11 years out of eleven.
- Condos in Châteauguay did +122% ($175,430 to $390,000): plexes rose faster than condos.
- 2026 (Jan. to mid-Sep.) versus 2025: $641,000 then $728,500 (+14%), on 18 sales against 31 for the whole of 2025.
- Compound annual growth rate: 11.7% a year for ten years. Gain in dollars: $488,500 for the plex, $307,000 for the house.
- Volume: 299 plexes sold on Centris in Châteauguay from 2016 to September 16, 2026, 17 in 2016 and 31 in 2025 (volume record: 2021, 47).
What it changes when buying or selling a plex in Châteauguay
At 1.40 times the price of a house, a plex in Châteauguay is expensive for what it earns: the buyer is not only buying rents, but the scarcity of a well-located building, and accepts a lower gross yield. For a first-time buyer, the duplex remains the way to live in Châteauguay while a tenant pays part of the mortgage, but the down payment (20% as soon as you do not occupy it, or on a building of more than four units) and the entry price demand a tight calculation. For the seller, this is a market where buyers compare price per unit and rent, not the house next door.
How to read these figures
One median price per year and per category, for all of Châteauguay: plexes on one side, houses and condos on the other, all pulled from Centris the same day. Plex is a broad category (two to five units): in a year when more triplexes than duplexes sell, the median rises without prices having moved. The plex ÷ house ratio corrects part of that effect by comparing two markets in the same city, the same year. For price per unit, which neutralizes building size, see plex prices per unit, 20 cities.
Frequently asked questions
How much does a plex cost in Châteauguay in 2026?
$728,500 at the median for a plex sold in Châteauguay from January to mid-September 2026 (18 sales), against $641,000 in 2025 and $240,000 in 2016.
Does a plex cost more than a house in Châteauguay?
Yes: $728,500 against $520,000 for a house, or 1.40 times the price. It was 1.13 times in 2016.
Did plexes rise faster than houses in Châteauguay?
Yes: +204% for plexes against +144% for houses between 2016 and 2026. That is the case in only 11 of 31 cities.
Source: Centris (Matrix), Statistics module, queries of September 16, 2026 for the municipality of Châteauguay: Plex, Single-family and Condominium categories, median sale price and number of sales by year over ten years; compiled by the Loaa & Manseur team on September 30, 2026, aggregates only, current year partial. The plex prices in 31 cities hub compares the 31 cities; the number of sales in Châteauguay gives the volume of each category.
Our other data series in Châteauguay, from the same Centris listings:
- Buyer's or seller's market in Châteauguay
- How much buyers negotiate in Châteauguay
- Houses that do not sell in Châteauguay
- Home prices in Châteauguay, ten years
Each series is recalculated from actual sales, aggregates only.
And the number of homes for sale in Châteauguay:
Inventory and new listings per year, ten years from the same Centris listings.
And sale price relative to asking in Châteauguay:
Bidding wars or negotiation, year by year, ten years from the same Centris listings.
And the houses that do not sell in Châteauguay:
Expired listings and failure rate, year by year, ten years from the same Centris listings.
And the average house price in Châteauguay:
Mean, median and asking price, year by year, ten years from the same Centris listings.
And the sales volume in Châteauguay:
How many dollars change hands each year, and whether price or the number of sales rose, ten years from the same Centris listings.
And house appreciation in Châteauguay:
What a house bought in each year since 2016 is worth today, ten years from the same Centris listings.
And the jump from condo to house in Châteauguay:
The gap between house and condo year by year, and how much of it the condo's gain covers, ten years from the same Centris listings.
All the statistics in Châteauguay at a glance:
Twelve 2026 Centris indicators, the city's rank on each, and a link to ten years of detail.
Our proof, not our promises
The Loaa & Manseur team, led by Lotfi Manseur and Loaa Al Daow, is 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 of large residential teams according to the official RE/MAX ranking, computed on actual transactions. Its Google profile counts more than 220 reviews with a 4.9 rating. Its offices are at 55 avenue de l'Équinoxe in Brossard, one bridge from the island, and every broker's licence can be checked in the OACIQ public register. Three things to verify yourself before calling us, and to demand of any other broker.
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.