A building with 2 dwellings (2 storeys), built around 1900, on a 177 m² lot. No building permit on record since 1990. Listed in the inventory of heritage buildings built before 1940. Older than 97% of the buildings on 4e Avenue. Assessed lower than 92% of the houses and plexes on 4e Avenue.
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What the records show for 420-422 4e Avenue
Note
Built before 1970, not tested: the water service line may be lead
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What the record says
Built 1900 (year estimated by the assessor), 2 dwellings. No City screening test is published for this address. The City considers buildings with fewer than 8 dwellings built before 1970 likely to have a lead service line.
What it means
Replacing the private part of a lead service line is the owner’s responsibility and is mandatory in Montréal.
What to do
Ask the seller whether the service line was tested or replaced, or call 311 to ask whether the City has tested it.
The full report explains every finding like this one.
Check
In the inventory of heritage buildings built before 1940
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.
Permits for this address · none since 1990
The borough has issued no building permit for this address since 1990.
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 years1
In Lachine, the borough issued 64 construction permits and 19 demolition permits in the last two years. About the borough
Street and trees
City trees in front1 · Maidenhair Tree
BoroughLachine
Questions about 420-422 4e Avenue
What is 420-422 4e Avenue assessed at?
$429,100 on the 2026-2027-2028 assessment roll. The previous roll had it at $360,600. More
How much is the welcome tax for 420-422 4e Avenue?
About $4,547 on its assessed value of $429,100. 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 420-422 4e Avenue built?
Around 1900, according to the assessment roll (estimated year).
How many dwellings does 420-422 4e Avenue have?
2 dwellings, according to the assessment roll.
Is 420-422 4e Avenue in a flood zone?
No. It is not in a flood zone mapped by the Quebec government. More
Does 420-422 4e Avenue have a notice of deterioration?
No. The Ville de Montréal has registered no notice of deterioration on this building. More
Is 420-422 4e Avenue a heritage building?
It is in the City’s inventory of buildings built before 1940. It is not protected, but some work may need a review. More
Can 420-422 4e Avenue be rented short term (Airbnb)?
No. The City of Montréal does not allow short-term rentals to tourists in this borough, even in a principal residence. More
What building permits has 420-422 4e Avenue had?
None since 1990, when the City’s open permit records begin. 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.
