Lachine duplex market — May 2025
Based on 8 actual sales · CourtiConnect
Market context: duplex in Lachine
The duplex market in Lachine recorded eight sales in May 2025, with a median price of $591,850 and an average price of $569,525. This represents a meaningful gap relative to the broader Montréal market, where the median duplex price over the trailing twelve months stood at $815,000 across 265 transactions. Lachine's duplex median sits 27.4 percent below the city-wide figure, positioning the neighbourhood as a more affordable segment within Montréal's duplex inventory and reflecting the distinct character and location dynamics of this West Island community. The pace of sales activity in Lachine during this period showed a measured rhythm, with properties remaining on market for an average of 117 days before closing. This timeframe suggests neither urgency nor stagnation, but rather a market where both buyers and sellers have reasonable opportunity to negotiate and make deliberate decisions. The duration reflects typical conditions for a smaller, neighbourhood-level market where inventory circulates at a sustainable rate. Over the six documented sales where asking and sale prices could be compared, the sale-to-asking price ratio averaged 0.944, indicating that buyers generally negotiated properties to below the listed price. This ratio reveals a slight buyer advantage in negotiations during the period, though the margin is modest and suggests a relatively balanced dynamic between supply and demand at the neighbourhood level. The building profile in Lachine's duplex market is notably homogeneous. All eight properties sold during May 2025 were built before 1980, with no sales of structures from the 1980–2010 period or properties constructed after 2010. This composition underscores that Lachine's duplex stock is predominantly vintage housing, requiring the typical due diligence expected of older residential properties. Prospective purchasers should anticipate buildings with established mechanical systems, structural characteristics typical of their era, and maintenance histories that warrant standard inspection protocols and verification checks prior to purchase. A significant observation from the sales data is that 75 percent of the eight transactions were concluded without a legal warranty of quality. For buyers considering properties in this market, this finding simply reflects that most sales proceeded on an as-is basis, which is why independent inspection, engineering review, and thorough property assessment become the standard safeguards in the acquisition process—measures any prudent buyer would undertake regardless of warranty terms. For buyers, Lachine offers duplex opportunities at a 27.4 percent discount to Montréal's median, though the vintage stock demands attentive inspection and evaluation. For sellers, the modest negotiating position suggests realistic pricing aligned with market conditions and property condition will support timely transactions. To estimate the current value of a specific duplex in Lachine, consult the real estate estimator tool, which can refine insights based on individual property characteristics and recent local activity.