20 St. Louis Avenue, Beaconsfield

A single-family home (1 storey), built in 1925, on a 516 m² lot. Older than 86% of the buildings on St. Louis Avenue. Assessed lower than 97% of the houses and plexes on St. Louis Avenue.

Data as of October 29, 2026 · updated every week

Assessed, 2026 roll
$492,600
Welcome tax on that value
≈ $5,500
Dwellings
1
Built
1925

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What stands out about 20 St. Louis Avenue

Compared with every address on the island of Montréal, from the assessment roll, Montréal open data and the STM timetable.

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What the records show for 20 St. Louis Avenue

Note

1 contaminated site within 100 m

Free preview
What the record says
Nearest: 428, boul. Beaconsfield, 95 m away.
What it means
Usually a former gas station, garage or workshop. It matters mostly if you plan to dig (basement, foundation, garden) or if groundwater is affected.
What to do
If you plan major excavation, ask about a phase I environmental site assessment.

The full report explains every finding like this one.

Note

Assessed at $492,600, +7% on the previous roll

What it means and what to ask
Clear

Not in a mapped flood zone

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Assessed value of 20 St. Louis Avenue

In the full report
2026-2028 roll$492,600
Previous roll$460,400
Roll in force in 2022$362,500

From $362,500 on the roll in force in 2022 to $492,600 on the current roll: +36%.

Welcome tax estimated with the provincial 2026 brackets on the assessed value; Beaconsfield may set a higher rate above $500,000, so confirm with your notary.

The building

UseResidential
Storeys1
Lot area516 m²
TypeDetached
Frontage, cadastre and owner since

Metro and bus near 20 St. Louis Avenue

Beaconsfield / Saint-Louis · 200, 41188 m
Beaconsfield / Saint-Louis · 200, 411101 m
Beaconsfield / Woodland · 200, 411283 m
To downtown (McGill station) by metro and bus, weekday morning≈ 71 min

Public schools near 20 St. Louis Avenue

French-language public elementary schoolÉcole Saint-Rémi, 570 m
English-language public elementary schoolCentre d'accueil Dawson Alternative, 210 m
French-language public secondary schoolÉcole John-F.- Kennedy, 2.2 km
English-language public secondary schoolCentre d'accueil Dawson Alternative, 210 m

The nearest school of each kind in a straight line, not the school of the address: each school service centre (French) and school board (English) sets its own territories, so ask it. English public schools require a certificate of eligibility under the Charter of the French language. Source: Ministère de l’Éducation du Québec.

The neighbourhood in the 2021 census

People in this census area (2021)653
Median age53.6 (island of Montréal 39.6)
Median household income (2020)$212,000 (island of Montréal $66,500)
Households that own their home93% (island of Montréal 42%)
Moved here in the last five years35% (island of Montréal 44%)
Children under 1515% (island of Montréal 15%)
People 65 and over29% (island of Montréal 18%)
People who speak French and English72% (island of Montréal 60%)
People who speak French only2% (island of Montréal 25%)
Adults 25 to 64 with a bachelor’s degree or higher76% (island of Montréal 45%)
Workers who take transit to work7% (island of Montréal 26%)
Homes that are single-detached houses100% (island of Montréal 14%)
Homes in buildings of five storeys or more0% (island of Montréal 15%)
Homes built in 1960 or before33% (island of Montréal 35%)

Figures for the census dissemination area that contains the address (a few blocks, usually 400 to 700 people), with the whole city in brackets. Source: Statistics Canada, 2021 Census of Population.

Crime near 20 St. Louis Avenue

In the full report

In the full report: incidents reported to the SPVM within 300 m over the last 12 months, by type.

Questions about 20 St. Louis Avenue

What is 20 St. Louis Avenue assessed at?

$492,600 on the 2026-2027-2028 assessment roll. The previous roll had it at $460,400. More

How much is the welcome tax for 20 St. Louis Avenue?

About $5,500 on its assessed value of $492,600. The tax is calculated on the highest of the price paid, the value in the deed and the adjusted assessed value, so the real amount may be higher. More

How has the assessed value of 20 St. Louis Avenue changed?

From $362,500 on the roll in force in 2022 to $492,600 on the current roll: +36%. The previous roll had it at $460,400. More

When was 20 St. Louis Avenue built?

In 1925, according to the assessment roll.

How many dwellings does 20 St. Louis Avenue have?

1 dwelling, according to the assessment roll.

Is 20 St. Louis Avenue in a flood zone?

No. It is not in a flood zone mapped by the Quebec government. More

How long does it take to get downtown from 20 St. Louis Avenue?

About 71 minutes by metro and bus on a weekday morning to McGill station, with the walk to the stop, according to the STM timetable.

Other addresses on St. Louis Avenue

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Beaconsfield is a separate municipality of the Montréal agglomeration: the Ville de Montréal’s permits, notices, right of first refusal and heritage files do not cover it. Ask the city of Beaconsfield for them.

Checked against Montréal open data and the Quebec assessment roll on October 29, 2026. Lot outlines come from the City’s assessment units and have no legal value; the certificate of location decides.