Buying a house in Châteauguay in 2026: the budget, the centre, the northwest and the river, the steps and the pitfalls

Buying · Châteauguay · QPAREB Q2 2026 figures

Three hundred and two houses for sale, the lowest median in the western South Shore and a negotiable high end: here are the budget per month, the sectors, the steps and the pitfalls for buying a house in Châteauguay in 2026.

Buying a house in Châteauguay in 2026 means buying in the cheapest city in the western South Shore, with 43 % more choice than a year ago: a $525,000 median (flat year over year), 36 days, 302 houses active, a seller's market up to $790,000 and a buyer's market above (11.0 months of inventory). The budget starts around $400,000 for a 1960s to 1970s bungalow in the centre or south (about $1,933 a month with 5 % down, household income of about $88,000), passes $525,000 for a renovated bungalow or a 1980s cottage ($2,531, $114,000) and reaches $800,000 for a recent home in the northwest or a waterfront, where the buyer negotiates ($3,790, $168,000). The method: pre-approval, sector chosen on closed sales, an offer in the first two weeks under $660,000, a documented negotiation above $790,000. Here are the budget, the sectors, the steps and the pitfalls.

The Châteauguay market in 2026, from the buyer's side

Châteauguay (QPAREB sector 39: Châteauguay, Mercier, Léry) sold its median house for $525,000 in the second quarter of 2026, flat year over year and +43 % in five years, in 36 days, with 302 houses active (+43 %). The market is the seller's up to $790,000 (2.5 months of inventory between $260,000 and $390,000, 3.0 months up to $660,000, 5.8 months up to $790,000) and the buyer's above (11.0 months). For a buyer, that means a quick offer under $660,000 and a negotiation above $790,000. The monthly picture is on the South Shore's August 2026 report.

Sector (QPAREB, Q2 2026)House, median1 year5 yearsDaysHouses active
Châteauguay, Mercier, Léry$525,0000%43 %36 days302
Saint-Constant, Delson, Sainte-Catherine (neighbours)$620,0005%42 %38 days208
Candiac, La Prairie$820,0004%33 %39 days162
South Shore, all$648,5002%39 %30 days1

Châteauguay: months of inventory by price range (single-family)

RangeMonths of inventoryMarket
< 260K3.8 monthsSeller
260K - 390K2.5 monthsSeller
390K - 660K3.0 monthsSeller
660K - 790K5.8 monthsSeller
>= 790K11.0 monthsBuyer

Under 4 months of inventory, the seller leads and a fairly priced house goes in three weeks; above 8 months, the buyer leads and the delay is counted in months.

What it costs per month in Châteauguay

Purchase priceMinimum down paymentMonthly payment at 4.24 %, 30 years (CMHC premium included)Gross household income required (approx.)
$400,000$20,000$1,933$88,000
$450,000$22,500$2,175$98,000
$525,000$27,500$2,531$114,000
$650,000$40,000$3,103$139,000
$800,000$55,000$3,790$168,000

Assumptions: 4.24 % five-year fixed rate, stress test at 6.24 %, 5 % down up to $500,000 and 10 % on the portion above, CMHC premium added to the loan, municipal and school taxes at 0.9 % of the price, $1,800 a year in heating, 39 % gross debt service ratio. Your file may give a different result.

Which sector to buy in in Châteauguay

The centre and the south, around boulevard Saint-Jean-Baptiste, old Châteauguay and the 132, sell the 1960s to 1980s bungalows and cottages below the median: the entry budget, to refresh, near the shops and the exo buses to Angrignon. The northwest, toward the 30 and Mercier, sells the 1990s to 2020 cottages at or above the median, with the garage. The Châteauguay river, Lac Saint-Louis and the streets near Île Saint-Bernard sell the waterfront above $790,000, where the buyer leads. Mercier and Léry, in the same sector, sell on larger lots. Our guide living in Châteauguay details each sector.

The eight steps of a purchase, in order

  1. The real budget: down payment, CMHC premium, notary fees ($1,500 to $2,500), inspection ($500 to $800), welcome tax (about 1 % to 2 % of the price, refundable up to $5,875 for a first-time buyer), tax adjustments and moving. Since Finances Québec's Information Bulletin 2026-2 (April 2026), this credit is reduced by 2.35 % of the portion of the price above $750,000 and disappears at $1,000,000: $4,700 at $800,000, $2,350 at $900,000.
  2. The written pre-approval, with the rate guaranteed 90 to 120 days; without it, no serious offer in a sector that sells in under a month.
  3. Choosing the sector on closed sales, not on asking prices: two or three sectors compared on price, days on market and commute.
  4. The viewings, grouped on the first weekend of the listing when the market is the seller's.
  5. The offer to purchase, conditional on inspection and financing; short and clean in a seller's market, negotiated in a buyer's market; the price is documented with the street's last three comparable sales.
  6. The pre-purchase inspection and the reading of the seller's declaration, the certificate of location and, outside the urban perimeter, the well and septic reports.
  7. Financing confirmed and conditions lifted, 10 to 15 days after acceptance.
  8. The notary, 30 to 60 days after acceptance: that is when the property changes hands.

The pitfalls specific to Châteauguay

The flood zone along the Châteauguay river and the lake: the municipal map and the certificate of location before the offer, because insurance and financing depend on it. The 1960s bungalows: roof, windows, electrical panel, drain and sometimes a buried oil tank to inspect and price. Pyrite in the 1970s to 1990s backfill. The Mercier bridge in the time budget, to test at rush hour before buying. And the choice: with 302 houses, compare, but under $660,000 do not wait for the sixth.

Before making an offer in Châteauguay, our figures drawn from actual sales:

All four pages are built on listings sold over the last twelve months, not on regional averages. They exist to put a number on an offer rather than guess at one.

Before you sign: Certificate of location in Châteauguay: cost, timing and when to redo it

Bungalow or two-storey home in Châteauguay:

Single-storey homes make up 70% of sales in Châteauguay over ten years; our page gives both price series, the second-floor premium and who the bungalow is for.

What one more bedroom costs in Châteauguay:

Three price series (3, 4, 5 or more bedrooms) over ten years, the fourth- and fifth-bedroom premiums, and the size that rose the most in Châteauguay.

What one more bedroom costs in a condo in Châteauguay:

The median price of 1-, 2- and 3-plus-bedroom condos over ten years, the second- and third-bedroom premiums, and the size that rose the most in Châteauguay.

Days on market in Châteauguay, ten years of perspective:

Median days for a house and a condo by year since 2016, the decade's four markets and what today's delay changes when selling in Châteauguay.

The number of sales in Châteauguay, ten years of perspective:

Houses, condos and plexes sold per year since 2016, the record year, the high-rate trough and what today's volume changes when selling in Châteauguay.

Plex prices in Châteauguay, ten years of perspective:

The median price of a plex per year since 2016, next to houses and condos, the frenzy, the rate brake and what the plex-to-house ratio tells a buyer in Châteauguay.

How many homes are for sale in Châteauguay, ten years of perspective:

Month-end inventory and new listings per year since 2016, the frenzy trough, absorption, months of inventory and why prices doubled in Châteauguay.

Sale price relative to asking price in Châteauguay, ten years of perspective:

At what percentage of asking houses have sold since 2016, the 2021 bidding wars, the return of negotiation and what the gap is worth in dollars in Châteauguay.

Houses that do not sell in Châteauguay, ten years of perspective:

Listings expired without a sale per year since 2016, the failure rate against sales, average days next to median days and what today's rate tells a seller in Châteauguay.

The average house price in Châteauguay, ten years of perspective:

The average sale price per year since 2016, next to the median and the asking price, why the average is higher and which of the three prices to use to set yours in Châteauguay.

How many dollars of houses sell in Châteauguay, ten years of perspective:

The total sale prices per year since 2016, next to the number of sales and the average price: whether the rise comes from price or from the number of buyers in Châteauguay.

House appreciation in Châteauguay by year of purchase:

What a house bought in 2016, 2019, 2021 or 2024 is worth today at the median price, in dollars, in percent and per year, house and condo, and what is left for those who bought at the peak in Châteauguay.

From condo to house in Châteauguay, the gap to close:

The median price of the house and the condo year by year since 2016, the gap between them, and whether the gain on a condo bought in 2016, 2019, 2021 or 2023 covers the jump in Châteauguay.

The Châteauguay market in one table:

Price, growth, sales, volume, days on market, inventory, over-asking, unsold, condo and appreciation, each with the city's rank among 50 and ten years of detail in Châteauguay.

How much down payment to buy in Châteauguay:

The legal minimum on the median house, the 20% that avoids the CMHC premium, the premium at the minimum, what a FHSA and an HBP cover, the condo, and ten years of perspective in Châteauguay.

How many condos are for sale in Châteauguay, ten years of perspective:

Condominium inventory at each month-end and new listings per year since 2016, absorption, months of inventory, and the comparison with single-family houses in Châteauguay.

When to sell in Châteauguay, ten years of sales month by month:

The month with the most home sales, the quietest month, spring versus winter, the best-paying month and when to list to sell at the right time in Châteauguay.

Condos that do not sell in Châteauguay, ten years of perspective:

Condo listings expired without a sale per year since 2016, the failure rate against sales, the same rate for houses, and what it tells a condo seller in Châteauguay.

When to sell a condo in Châteauguay, ten years of sales month by month:

The month with the most condo sales, the quietest month, spring versus winter, the best-paying month, houses alongside and when to list in Châteauguay.

How much buyers negotiate a condo in Châteauguay, ten years of perspective:

Sale price as a percentage of asking for condos, year by year since 2016, the ratio on the original price, houses alongside and the dollar gap on the median condo in Châteauguay.

What the median house costs a month in Châteauguay, ten years of perspective:

The monthly payment on the house in the middle every year since 2016 with the Centris price and the 5-year rate actually charged, the share of price and the share of rate, the renewal shock and the income it takes in Châteauguay.

What the house really gained in Châteauguay, once inflation is removed:

Each year's median price converted to 2026 dollars with the Quebec CPI, the real increase, the years of real decline, the peak in purchasing power and the condo alongside in Châteauguay.

What the median condo costs a month in Châteauguay, ten years of perspective:

The monthly payment on the condo in the middle every year since 2016 with the Centris price and the 5-year rate actually charged, the share of price and the share of rate, the renewal shock and the income it takes in Châteauguay.

Châteauguay or the city next door: where to buy in 2026, matchup by matchup:

Each matchup puts Châteauguay and a neighbouring city side by side over ten years of Centris sales: house and condo prices, gap, days on market, inventory, bidding, unsold listings and monthly payment.

How much is a semi-detached or row house in Châteauguay, ten years of perspective:

The median price by house type year by year since 2016, the number of sales, the shared-wall discount and how it moved in Châteauguay.

How many houses still sell under $500,000 in Châteauguay, ten years of perspective:

Sales under $500,000 and under $400,000 year by year since 2016, their share, the tipping year and what is still available under the threshold in Châteauguay.

At what price houses sell in Châteauguay, range by range:

The distribution of sales by price bracket in 2020, 2023 and 2026, the best-selling range, the share under $500,000 and above $750,000 in Châteauguay.

How long to sell by price in Châteauguay:

Median days on market by price bracket over the past twelve months, the fastest bracket, the slowest and what it changes for selling or buying in Châteauguay.

How much the lot is worth in a house price in Châteauguay, ten years of perspective:

The median price of houses on small lots and on large lots year by year since 2016, the large-lot premium and how it moved in Châteauguay.

How many dollars of condos sell in Châteauguay, ten years of perspective:

Condo sales volume year by year since 2016, the number of sales and the average price behind it, and the condo's share of the market in Châteauguay.

The average condo price in Châteauguay, and why it exceeds the median:

The average sale price of condos year by year since 2016, beside the median price and the asking price, and the gap between the two in Châteauguay.

How long to sell a condo by price in Châteauguay:

Median condo days on market by price bracket over the past twelve months, the fastest bracket, the slowest and what it changes for selling or buying a condo in Châteauguay.

What sells at what price in Châteauguay:

The 2026 sales crossed by price range and category: what sells under $300,000, who holds the million, where houses, condos and plexes compete in Châteauguay.

Which sells fastest in Châteauguay, house, condo or plex:

Days on market of houses, condos and plexes compared price range by price range over twelve months in Châteauguay.

At what price condos sell in Châteauguay, range by range:

The distribution of condo sales by price bracket in 2020 and 2026, the best-selling range, the share under $300,000 and under $400,000 in Châteauguay.

The pros and cons of living in Châteauguay:

The good reasons to live there and what you have to accept, who it suits and who it does not, written without embellishment by a team that sells there.

The market in Châteauguay this month:

Days on market, sold against asking, inventory and September 2026 verdict in Châteauguay, over the past twelve Centris months.

The condo market in Châteauguay this month:

Days on market, sold against asking, median price and September 2026 verdict for the condo in Châteauguay, compared with the house, over the past twelve Centris months.

The welcome tax on the median house in Châteauguay, 2016 against 2026:

The tax computed year by year on the Centris median price with the city's 2026 grid, and what a first-time buyer pays net in Châteauguay.

The salary to buy the median house in Châteauguay, 2016 against 2026:

The gross income required year by year (payment at the contracted rate, taxes, heating, 32% GDS ratio) on the Centris median price in Châteauguay, and the price's and the rate's share of the increase.

Which houses linger by price in Châteauguay:

Average against median days on market by price bracket over the past twelve months, the ratio between the two and the bracket where listings linger the most in Châteauguay.

Split-level, storey-and-a-half, bungalow or two-storey in Châteauguay:

Four house types side by side over ten years: median price, gap between types, share of sales and the one that rose the most in Châteauguay.

How much buyers negotiate on a house by price in Châteauguay:

Sold-to-asking ratio by price bracket over the past twelve months, the bracket negotiated the most, the one where asking or more is paid, and what it changes for selling or buying in Châteauguay.

How much buyers negotiate on a condo by price in Châteauguay:

Sold-to-asking ratio by price bracket over the past twelve months, the bracket negotiated the most, the one where asking or more is paid, and what it changes for selling or buying in Châteauguay.

Where the money goes by price in Châteauguay:

Share of dollars against share of sales by price bracket over the past twelve months, the average ticket and the bracket that weighs the most in Châteauguay.

How much sellers cut their price before selling in Châteauguay:

Sold price against the first asking price and the last, by price bracket over the past twelve months, and the bracket where sellers adjust the most in Châteauguay.

What one more bathroom costs in Châteauguay:

Three price series (1, 2, 3 or more bathrooms) over ten years, the second- and third-bathroom premiums, and the class that rose the most in Châteauguay.

One of the team's Châteauguay listings, for sale right now:

It has all three features that lift a house's price the most in Châteauguay: the garage, the pool and the fireplace.

Buying to rent on Airbnb in Châteauguay:

What the city allows for the principal residence and for a unit bought for short-term rental, the permit required and the purchase price, with sources.

Property taxes in Châteauguay:

The tax bill, increase and rate published by the city for 2026, the assessment roll year and the school tax, with sources.

Coming from Montreal?

Prices, monthly mortgage payment and welcome tax compared with Montreal.

New or old in Châteauguay:

Median price of houses sold by construction era, from 1959 and earlier to 2010 and later, year by year since 2016.

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 221 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.

For the budget, first-time home buyer in Châteauguay; for prices, house prices in Châteauguay; to compare, Châteauguay vs Candiac and Châteauguay vs Vaudreuil-Dorion.

Frequently asked questions

What budget do you need to buy a house in Châteauguay?

About $88,000 in gross household income for a $400,000 house with 5 % down, $114,000 for $525,000 and $168,000 for $800,000, with a 30-year amortization and the stress test at 6.24 %.

Should you offer above the asking price in Châteauguay?

Under $660,000, sometimes: 3.0 months of inventory and 36 days on market bring multiple offers on the fairly priced house, but 302 houses active give the choice. Above $790,000, no: the buyer leads and an offer below asking is discussed. The ceiling is set on the street's closed sales.

Is it a good time to buy in Châteauguay?

Published forecasts (Desjardins, QPAREB, CMHC) expect stable to moderately rising prices in 2027 and a policy rate around 2.75 %; waiting does not lower the price. The right time is when your budget, your pre-approval and your sector are ready; in a seller's market, the ready buyer beats the buyer who waits.

How much does a broker cost the buyer?

Generally nothing: the buyer's broker's compensation is provided for in the seller's brokerage contract and paid at the sale. The purchase brokerage contract states what happens if the seller provides none; we explain it before signing. See our fees (in French).

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.

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