Châteauguay is one of the most accessible cities on the South Shore West in 2026. Connected to Montreal via the Mercier Bridge and Highway 30, it offers an interesting compromise between price, space and metro access. The median single-family home sits around $437,000, about 22% below the Montreal median ($560,000 QPAREB March 2026) — one of the most accessible entry points within 30 minutes of Montreal. For broader context, see also our Montreal exodus real estate impact analysis.
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💰 Châteauguay vs Montreal
$437,000
Châteauguay
$560,000
Single-family MTL
-22%
Discount vs MTL
Châteauguay applies a 0.78× ratio on the Montreal single-family median. This 22% structural discount makes it one of the most accessible destinations in the metro area for first-time buyers.
🧮 Reproducible calculation: $437,000 at 3.69%
| Purchase price | $437,000 |
| Down payment (20%) | $87,400 |
| Mortgage | $349,600 |
| 5-year fixed rate | 3.69% |
| Amortization | 25 years |
| Monthly payment (P&I) | ~ $1,790 |
💵 Total savings vs Montreal
Purchase price savings: $123,000
Down payment savings (20%): $24,600
Monthly savings vs $560K: ~ $630/month
Interest savings over 25 years: ~ $189,000
🔍 Estimation methodology
📐 Estimates based on QPAREB March 2026 data and historical sector ratios. Châteauguay ratio: 0.78× on single-family. Request a comparative analysis from a local OACIQ broker for precise valuation.
🎯 Buyer and seller strategy
✅ Buyers
First-time buyers: 22% discount opportunity
Plan Mercier Bridge traffic at rush hour
Valid pre-approval before BoC April 29
💰 Sellers
Market sustained by Montreal exodus
Highlight Highway 30 access
Spring peak: target May-June
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