Single-family median price, Vieux-Longueuil sector
$625,000As of Q3 2026.Source
Condominium median price, Vieux-Longueuil sector
$398,500As of Q3 2026.Source
Single-family median price, Montreal South Shore
$645,000As of Q3 2026.Source
Population of the City of Longueuil
254,483As of 2021 Census.Source
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Longueuil is the main city of the South Shore, across the river from Montreal. It is large enough that Centris splits it into sectors, and the sector you live in matters more than the city name.

Vieux-Longueuil prices and the equity beneath them

Centris’s third-quarter 2026 page for the Vieux-Longueuil sector shows 283 total residential sales, down 9%, and 453 active listings, up 20%. Single-family homes had a median price of $625,000, unchanged from a year earlier, and sold in an average of 35 days. Condominiums had a median of $398,500 (up 5%) and took 47 days, with condo listings up 32%. Plexes had a median of $840,000 (up 2%) and took 58 days.

The Montreal South Shore as a whole, which Centris reports separately, had a single-family median of $645,000, a condo median of $407,500 and 3,733 active listings, up 26%. QPAREB said in October that South Shore inventory was up 30%, among the biggest increases in the metropolitan area. Its Q3 release said the South Shore condominium market still favoured sellers.

Longueuil city counted 254,483 people in 2021, up 6.1%, and the wider agglomeration 436,785.

House and plex: two ceilings in Longueuil

A second mortgage in Quebec is a second hypothec (deuxième hypothèque). Federal consumer guidance from the Financial Consumer Agency of Canada puts the usual limit at 80% of the appraised value minus the mortgage balance, and a lender may differ. In the house example, a $410,000 first hypothec leaves $90,000 of room and $20,000 after a $70,000 loan. In the plex example, a $580,000 first hypothec leaves $92,000, and a $100,000 loan is $8,000 too big.

A flat median means your equity grows mostly by paying down the first hypothec, not by price gains. Run the calculator with your latest statement.

The welcome tax and other Longueuil costs

Longueuil collects a welcome tax (taxe de bienvenue) on purchases, with rates set by the City above the first brackets. We could not open the City’s schedule for this page, so we quote no Longueuil figure. For a purchase, your notary calculates it for your deed. A second hypothec on a home you keep is not a transfer, and we found no duty on it.

You pay the notary for the deed and its registration, an appraisal and any lender fee instead. Ask for each in writing. If a lender wants an appraisal fee up front, ask when it is refunded and when it is not.

Renewals, debt and business money

Many South Shore owners are in a renewal window. The Bank of Canada’s 2026 Financial Stability Report says the last pandemic-era five-year fixed-payment mortgages renew over the next twelve months with payments up about 15%, and that most holders who renewed in 2025 and early 2026 managed. If this is your reason for looking, read about renewal payment shock and ask your own lender first.

If the aim is to clear card or loan balances, see consolidation, and if the money is for a business, business purpose. Both put the home behind the debt, so compare each with a Licensed Insolvency Trustee’s options or a bank loan that does not.

What a flat median can hide

A median that has not moved can still hide churn underneath. In Vieux-Longueuil, Q3 2026 house sales were 116, down 5%, and active house listings were 132, up 6%. Condo sales were 116, down 10%, against 221 condo listings, up 32%. Plex sales were 51, down 16%, with 99 listings, up 16%.

Read together, those numbers describe a sector where homes still sell but buyers have more choice each quarter, particularly in condos. That is the backdrop for a lender deciding how much weight to give to recent sales when it values your address.

If you are weighing a second hypothec, the safer reading is that your value is steady rather than rising. Plan the exit on that basis: how the loan will be repaid at the end of its term without counting on a price gain.

Keep the paperwork for your first hypothec close at hand: the deed copy, the latest annual statement and the renewal notice. A notary or lender will ask for them, and having them ready saves a week.

Speaking to a professional in Longueuil

Start with the Quebec page, which lists who licenses mortgage professionals and what to ask for. After that, ask a professional to look at your Longueuil numbers.

A Vieux-Longueuil house at the Q3 2026 single-family median

The $625,000 value is the Centris Q3 2026 median single-family price for the Vieux-Longueuil sector, used as a stand-in for an appraised value. The $410,000 first hypothec and the $70,000 loan are made up. The 80% ceiling is the one the Financial Consumer Agency of Canada gives for a second mortgage; a Quebec lender may use another figure.

Home value used
$625,000
80% of the property value
$500,000

$625,000 x 0.80

Room under the ceiling before any loan
$90,000

$500,000 minus $410,000

Combined loan-to-value with a $70,000 loan
76.8%

$480,000 / $625,000

Room left under the ceiling after the loan
$20,000

A $70,000 loan fits with $20,000 to spare. Flat prices mean the cushion is the same next year unless the first hypothec is paid down.

Illustration only. The figures are made up to show the arithmetic. They are not a quote, a rate or an offer.

A Vieux-Longueuil plex at the Q3 2026 plex median

The $840,000 value is the Centris Q3 2026 median price for a plex of two to five units in the Vieux-Longueuil sector, used as a stand-in for an appraised value. The $580,000 first hypothec and the $100,000 loan are made up.

Property value used
$840,000
80% of the property value
$672,000

$840,000 x 0.80

Room under the ceiling before any loan
$92,000

$672,000 minus $580,000

Combined loan-to-value with a $100,000 loan
81.0%

$680,000 / $840,000

Amount a $100,000 loan overshoots the ceiling by
$8,000

The owner has $260,000 of equity on paper and can borrow about $92,000 under this ceiling. A $100,000 loan is $8,000 too large, so the amount would have to be trimmed.

Illustration only. The figures are made up to show the arithmetic. They are not a quote, a rate or an offer.

Questions people ask

This page quotes Vieux-Longueuil, not the whole City. Why?

Centris publishes statistics by sector, and Vieux-Longueuil is the Longueuil sector with a published Q3 2026 median we could open. Other parts of the City, including Greenfield Park and Saint-Hubert, may price differently, so ask for an appraisal of your own address.

Are sellers still favoured on the South Shore?

Mostly. QPAREB's Q3 2026 release said both the North Shore and South Shore condominium markets still favoured sellers, while the Island of Montreal was nearing balance. South Shore inventory was up 30% in October, so the position is easing.

How quickly do Longueuil condos sell compared with houses?

Slower. In Q3 2026 Centris showed an average of 35 days for houses in Vieux-Longueuil, 47 days for condos and 58 for plexes. Condo listings were up 32% on the year, which can make a lender cautious about condo values.

My first mortgage renews soon. Is a second hypothec the answer?

Usually not the first step. The Bank of Canada says borrowers renewing pandemic-era five-year fixed mortgages face payments about 15% higher. Ask your lender about a renewal, a longer amortization or a refinance, and compare the total cost of each.

Funding a business from a Longueuil home: is it done?

Some owners do, but it puts the home behind the business risk. A lender will ask to see income and a repayment plan. Read our business purpose page and compare it with a business loan that does not use your house.

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Sources