La Plaine is the northern sector of Terrebonne, and the one where you enter the market at the lowest price in the city. In the third quarter of 2026, single-family homes there sold at a median price of $520,000, compared with $632,500 in the Terrebonne sector and $695,000 in Lachenaie, according to Centris.
La Plaine by the numbers
| Single-family | Sales | Median price | Average days on market |
|---|---|---|---|
| Q3 2026 | 56 (+21%) | $520,000 (+3%) | 31 |
| 4 quarters ending September 2026 | 270 (+8%) | $519,062 (+7%) | 27 |
Source: Centris real estate statistics for Terrebonne (La Plaine), third quarter of 2026, July to September. Changes compare with the same period a year earlier.
It is the only one of Terrebonne’s three sectors where sales rose in the third quarter: +21%, while they fell 25% in the Terrebonne sector and 20% in Lachenaie. Supply rose even faster: 74 active single-family listings in the third quarter, 94% more than a year earlier. Condominiums remain marginal: 62 sales over four quarters, at a median price of $333,000 (+1%).
The APCIQ places La Plaine in its sector 29, Terrebonne, with Bois-des-Filion, the rest of Terrebonne, Lachenaie and Sainte-Anne-des-Plaines. In the third quarter of 2026, single-family homes there recorded 273 sales (-14%), a median price of $587,500 (+2%) and 37 days on market on average; active listings had risen 38%. Over 12 months, the APCIQ classifies every single-family price range in the sector as a seller’s market, with 2.0 to 6.2 months of inventory. Source: APCIQ residential barometer, Q3 2026, page 39.
The figures for La Plaine and the city’s two other sectors are in the La Plaine, Terrebonne real estate market in the third quarter of 2026: sales, median prices and days on market for single-family homes, condos and plexes, as published by Centris.
From farming parish to Terrebonne sector
According to the City of Terrebonne, the rang de La Plaine sud, today chemin Forest, appears in 1840, and Canadian Pacific built a station at La Plaine in 1903. The municipality of the Parish of Saint-Joachim was founded in 1922 and became the municipality of La Plaine in 1969. In 2001, La Plaine, Lachenaie and Terrebonne merged to form the current city.
The growth is recent. The sector had 19,415 residents in 2006 and 24,235 in 2016, an increase of nearly 25% in ten years, according to the City’s parks master plan. Centris reports 24,706 at the 2021 census. Boundaries differ slightly from one source to another, but the order of magnitude is the same: about 25,000 residents.
What sets the sector apart
The parks master plan describes the sector as “somewhat off-centre in the north of the territory”: a small densely urbanized part and, for the rest, woodland and farmland. It is also the only urbanized sector of Terrebonne located outside the band between the Rivière des Mille Îles and Autoroute 640.
Route 337, boulevard Laurier, crosses the sector and is its main artery. Autoroute 640 does not pass through La Plaine: you reach it by Route 337, at exit 38.
The plan counts 9 neighbourhood parks, 7 sector parks and two large parks in the sector, Philippe-Villeneuve and du Boisé. It notes, however, that the north of the sector is not served by any large park.
Assessment roll and welcome tax
Terrebonne’s 2026-2027-2028 assessment roll, prepared by LBP Évaluateurs agréés, has a reference date of July 1, 2024. According to the City’s 2026 budget, the overall roll rises 24.66% from the 2023-2025 roll; the city’s average house is valued at $573,987 and the average condo at $390,955. These averages cover the whole city, not La Plaine alone. The City spreads the change over three years: the 2026 tax bill uses the 2025 value plus one third of the difference.
For transfer duties, Terrebonne applies a 3% rate in 2026 on the portion above $500,000, on top of the provincial brackets of 0.5%, 1% and 1.5%; the 2026 comparative factor is 1. For a $520,000 house, La Plaine’s third-quarter median price, the calculation gives $6,210.50. The City says it takes 3 to 6 months to receive the bill. The calculation and the 2027 thresholds are in the welcome tax guide.
What to check before buying
The agricultural zone. According to the City, 37% of Terrebonne’s territory is in the agricultural zone, and a good part of La Plaine is woodland and farmland. In the agricultural zone, several actions, such as subdividing a lot or changing its use, require authorization from the Commission de protection du territoire agricole du Québec. For a large lot or a property on the edge of this zone, check what is allowed before the offer, not after.
Water and sewer. In a partly rural sector, do not assume the connection. Check whether the property is connected to municipal water and sewer, or whether it has a well and a septic system, which are inspected and maintained differently.
Flood zones. The Mascouche River borders the sector to the south. The provincial flood zone framework has been in force since March 1, 2026, and the status is checked address by address. I verify the applicable map before the offer, because the status affects insurance and financing. The checks are detailed in buying in a flood zone in Quebec.
The commute. Drive the actual route to your workplace, at the time you would really make it. That is the true price of the gap with Lachenaie.
Selling in La Plaine
The price gap with the rest of the city makes La Plaine a natural option for buyers who are looking at Terrebonne on a tighter budget. The list price is therefore set on comparable sales in La Plaine, not on the city median. In the third quarter of 2026, homes stayed on the market 31 days on average: a well-positioned property sells quickly, a property listed at Lachenaie prices waits.
The comparative market analysis is prepared at no cost, with recent sales on your street and the properties that did not find a buyer.
Buying in La Plaine
Start with mortgage pre-approval, then set your range with the affordability calculator. You benefit from the Intégri-T guarantee, paid by the seller or the buyer, which covers up to $50,000 in latent defects for three years after the notarial deed.
To compare with the rest of the city, see the Terrebonne and Old Terrebonne pages. Have an address in mind? Write to me, and I will check the zoning and connections before your offer.
