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Single Family ResidenceResidential
$39,982$35 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 83How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $40,001 on Jun 8, 2026

21 MONTCALM AVE

PLATTSBURGH, NY 12901
3
Beds
2 / 2
Baths
1,140 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
3,300 ft²
Lot SizeThe size of the land the home sits on, from county records.
1878
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
Pre-foreclosure (NOS)A foreclosure notice on this home is currently active. Many are worked out before any auction happens.
Auction scheduled for Aug 14, 2025.

Valuation

$40K
$33K low$47K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$40,001 · Jun 8, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,126 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$85,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$13,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$71,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$75,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$85,300

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.25
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
3
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
47
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
74
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
2
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Traditional/Old
CountyCLINTON
Lot (acres)The size of the land the home sits on, from county records.0.07
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.No Foundation
HeatingThe type of heating system in the home.Electric
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 50 ft²

Transaction History(2)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(3)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Thomas E Glasgow Elementary School
Elementary · Grades PK–2 · 0.4 mi
M
Stafford Middle SchoolB-
Middle · Grades 6–8 · 0.5 mi
H
Plattsburgh Senior High SchoolC+
High · Grades 9–12 · 1.0 mi

District: Plattsburgh City School District

Neighborhood · ZIP 12901These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.107
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.79
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.131

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.17%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.27,912
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.395 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$62,654
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$79,593
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.34 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.52%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

21 Montcalm Ave measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Among the least valuable homes in Plattsburgh 12901
  • Among the lowest price per square foot in Plattsburgh 12901
  • Smaller than 76% of homes in Plattsburgh 12901
  • Has a smaller lot than 97% of homes in Clinton County
  • Older than 94% of homes in Plattsburgh 12901

What homes are worth in Plattsburgh 12901

Each bar is how many homes fall in that price range. The marker is this home.

This home
$86K$727K

This home is worth less than almost all homes in Plattsburgh 12901.

How it measures up in Plattsburgh 12901

The dot is this home. The mark in the middle is the typical home in Plattsburgh 12901.

Estimated value$39,982
CheaperTypical $217,418Pricier

Cheaper than almost all homes nearby

Price per ft²$35
CheaperTypical $149Pricier

Cheaper than almost all homes nearby

Living area1,140 ft²
SmallerTypical 1,515 ft²Bigger

Bigger than 24% of homes nearby

Lot size3,300 ft²
SmallerTypical 0.34 acBigger

Bigger than 6% of homes nearby

Year built1878
OlderTypical 1965Newer

Newer than 6% of homes nearby

How 21 Montcalm Ave ranks against every home in each area.
MeasureThis homePlattsburgh 12901Clinton County
Estimated valuepricier than$39,982almost no homesalmost no homes
Price per ft²pricier than$35almost no homesalmost no homes
Living areabigger than1,140 ft²24% of homes28% of homes
Lot sizebigger than3,300 ft²6% of homes3% of homes
Year builtnewer than18786% of homes8% of homes

About 21 Montcalm Ave

How much is 21 Montcalm Ave, Plattsburgh, NY worth?

The TopHap Estimate for 21 Montcalm Ave, Plattsburgh, NY is $39,982 as of Aug 30, 2026. The likely range is $33,137 to $46,827. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Montcalm Ave, Plattsburgh, NY last sell?

21 Montcalm Ave, Plattsburgh, NY last sold on Jun 8, 2026 for $40,001, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 Montcalm Ave, Plattsburgh, NY?

21 Montcalm Ave, Plattsburgh, NY has 3 bedrooms, 2 bathrooms, 1,140 square feet of living space and a 0.07-acre lot.

When was 21 Montcalm Ave, Plattsburgh, NY built?

21 Montcalm Ave, Plattsburgh, NY was built in 1878, making it 148 years old. It is a traditional/old home. The building has 1 story.

What schools serve 21 Montcalm Ave, Plattsburgh, NY?

21 Montcalm Ave, Plattsburgh, NY is assigned to Thomas E Glasgow Elementary School (elementary); Stafford Middle School (middle), rated B-; Plattsburgh Senior High School (high), rated C+. All sit in Plattsburgh City School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Montcalm Ave, Plattsburgh, NY compare to other homes in Plattsburgh 12901?

Among the 8,854 homes in Plattsburgh 12901, it is worth more than almost none of them ($39,982 against a typical $217,418), its price per square foot is higher than almost none of them ($35 against a typical $149), it is bigger than 24% of them (1,140 ft² against a typical 1,515 ft²), its lot is bigger than 6% of them (3,300 ft² against a typical 0.34 ac) and it is newer than 6% of them (1878 against a typical 1965). Measured against all of Clinton County, it is worth more than almost no homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 21 Montcalm Ave, Plattsburgh, NY?

The 2025 property tax bill for 21 Montcalm Ave, Plattsburgh, NY was $1,126. The county assessed it at $85,300.

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