Unit R18 of 20 on the roll at 100 21e Avenue. Number 18 by value in the building. Assessed value +10% since the previous roll. A condo building with 20 units on the assessment roll, built in 1930. 6 building permits since 1990. Listed in the inventory of heritage buildings built before 1940.
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What stands out about R18-100 21e Avenue
6 building permits since 1990: more than at 94% of the addresses on the island of Montréal.
Built in 1930: older than 81% of the buildings on the island of Montréal.
1 water main break repaired within 35 m (1972–2017): more than at 76% of the addresses on the island of Montréal.
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 R18-100 21e Avenue
Note
Condo building, 20 units on the roll
Free preview
What the record says
20 divided co-ownership units at this address, built 1930.
What it means
Since the 2020 reform of co-ownership rules, the syndicate must have a contingency fund study and a maintenance log. Older buildings often face special assessments.
What to do
Ask for the syndicate’s certificate on the state of the co-ownership, the contingency fund study, the maintenance log, two years of minutes and the declaration of co-ownership.
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
Check
6 building permits since 1990, 2 in the last 3 years
What it means and what to ask
Note
Typical unit assessed at $304,200, +13% on the previous roll
What it means and what to ask
Note
No short-term rentals to tourists in this borough
What it means and what to ask
Note
1 contaminated site within 100 m
What it means and what to ask
Clear
No notice of deterioration
Clear
No City right of first refusal
Clear
Not in a mapped flood zone
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.
From $7,300 on the roll in force in 2022 to $11,600 on the current roll: +59%.
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.
To downtown (McGill station) by metro and bus, weekday morning≈ 38 min
Public schools near R18-100 21e Avenue
French-language public elementary schoolÉcole Jardin-des-Saints-Anges, 630 m
English-language public elementary schoolÉcole primaire Maple Grove, 2.8 km
French-language public secondary schoolÉcole Dalbé-Viau, 1.0 km
English-language public secondary schoolÉcole secondaire Lakeside Academy, 2.8 km
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.
Life around R18-100 21e Avenue
City 311 requests within 150 m, last 12 months40 · streets, sidewalks and lights 13, snow clearing 8, dumped items and cleanliness 5
Ground-floor shops within 500 m78 · restaurants and cafés 15, grocery and daily shops 12, other shops 6, services 44, bars, entertainment and hotels 1
Empty storefronts within 500 m3%
Nearest food shopNonina, 220 m
Playground830 m
Dog run440 m
Public poolPort de Plaisance, 700 m
Wading pool or splash padParc Lasalle 2, 780 m
Outdoor skating rink650 m
Tennis or pickleball courts650 m
LibraryBibliothèque Saul-Bellow, 1.5 km
Ville de Montréal open data: 311 requests are counted around the address, never tied to one home; shops come from the City’s survey of ground-floor commercial premises; distances are in a straight line.
The neighbourhood in the 2021 census
People in this census area (2021)1,048
Median age45.6 (island of Montréal 39.6)
Median household income (2020)$72,000 (island of Montréal $66,500)
Households that own their home45% (island of Montréal 42%)
Moved here in the last five years43% (island of Montréal 44%)
Children under 1512% (island of Montréal 15%)
People 65 and over24% (island of Montréal 18%)
People who speak French and English66% (island of Montréal 60%)
People who speak French only23% (island of Montréal 25%)
Adults 25 to 64 with a bachelor’s degree or higher33% (island of Montréal 45%)
Workers who take transit to work17% (island of Montréal 26%)
Homes that are single-detached houses2% (island of Montréal 14%)
Homes in buildings of five storeys or more0% (island of Montréal 15%)
Homes built in 1960 or before40% (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.
Street and trees
City trees in frontNone recorded
BoroughLachine
City plan for the pipes under the street (2023–2027)Water main: no work needed · sewer: no work needed
Water main breaks repaired within 35 m (1972–2017)1, the latest in 2000
Building activity nearby
Construction permits within 300 m, 2 years3
Demolition permits within 300 m, 2 years3
In Lachine, the borough issued 65 construction permits and 18 demolition permits in the last two years. About the borough
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
Questions about R18-100 21e Avenue
What is Unit R18, R18-100 21e Avenue assessed at?
$11,600 on the 2026-2027-2028 assessment roll. More
How much is the welcome tax for R18-100 21e Avenue?
About $58 on its assessed value of $11,600. 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 Unit R18, R18-100 21e Avenue changed?
From $7,300 on the roll in force in 2022 to $11,600 on the current roll: +59%. The previous roll had it at $10,500. More
When was R18-100 21e Avenue built?
In 1930, according to the assessment roll.
Is R18-100 21e Avenue in a flood zone?
No. It is not in a flood zone mapped by the Quebec government. More
Does R18-100 21e Avenue have a notice of deterioration?
No. The Ville de Montréal has registered no notice of deterioration on this building. More
Is R18-100 21e 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 R18-100 21e 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 R18-100 21e Avenue had?
The City has issued 6 permits since 1990. The latest, from Nov 2024: abattage d'arbre. More
How long does it take to get downtown from R18-100 21e Avenue?
About 38 minutes by metro and bus on a weekday morning to McGill station, with the walk to the stop, according to the STM timetable.
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.
