A building with 2 dwellings (2 storeys), built in 1952, on a 209 m² lot. 1 building permit since 1990. Newer than 70% of the buildings on 12e Avenue. Assessed lower than 78% of the houses and plexes on 12e Avenue.
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What the records show for 643-645 12e Avenue
Note
Assessed at $504,100, +19% on the previous roll
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What the record says
2026-2028 roll (market of 2024-07-01): land $172,400, building $331,700, total $504,100. Previous roll: $423,600.
What it means
The roll reflects the market on July 1, 2024, so it can be far from today’s price. The welcome tax is calculated on the higher of the price and the adjusted assessed value.
What to do
Ask your broker for recent sales nearby before you set your price.
The full report explains every finding like this one.
Check
1 building permit since 1990, 1 in the last 3 years
What it means and what to ask
What the record says
What it means
What to do
What the record says, what it means for a buyer and what to ask the seller and the notary: for this finding and every other one, in the full report.
Welcome tax estimated with the City of Montréal’s 2026 brackets on the assessed value; the notary calculates it on the higher of the price and the adjusted value.
In the full report: incidents reported to the SPVM within 300 m over the last 12 months, by type.
Break-ins
Theft from vehicles
Vehicle theft
Mischief
Robbery
Building activity nearby
Construction permits within 300 m, 2 years0
Demolition permits within 300 m, 2 years0
In Lachine, the borough issued 65 construction permits and 19 demolition permits in the last two years. About the borough
Street and trees
City trees in front1 · Littleleaf European Linden
BoroughLachine
Questions about 643-645 12e Avenue
What is 643-645 12e Avenue assessed at?
$504,100 on the 2026-2027-2028 assessment roll. The previous roll had it at $423,600. More
How much is the welcome tax for 643-645 12e Avenue?
About $5,672 on its assessed value of $504,100. 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
When was 643-645 12e Avenue built?
In 1952, according to the assessment roll.
How many dwellings does 643-645 12e Avenue have?
2 dwellings, according to the assessment roll.
Is 643-645 12e Avenue in a flood zone?
No. It is not in a flood zone mapped by the Quebec government. More
Does 643-645 12e Avenue have a notice of deterioration?
No. The Ville de Montréal has registered no notice of deterioration on this building. More
Is 643-645 12e Avenue a heritage building?
No. It is not listed or protected as heritage by the City. More
What building permits has 643-645 12e Avenue had?
The City has issued 1 permit since 1990. The latest, from Sep 2026: transformation. More
Checked against Montréal open data and the Quebec assessment roll on October 25, 2026. Lot outlines come from the City’s assessment units and have no legal value; the certificate of location decides.
