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 |
Source: Centris real estate statistics for Terrebonne (La Plaine), third quarter of 2026, July to September. Changes compare with the same quarter of 2025.
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. Over the last four quarters, Centris counts 270 single-family sales there, up 8%. Condominiums remain marginal: 62 sales over the same period.
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.
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 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.