Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$24,405
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 59How 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 $2,800 on Oct 14, 2020

521 ONTARIO ST

MONESSEN, PA 15062
0
Baths
0.1 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$24K
$14K low$34K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$2,800 · Oct 14, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$869 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$5,490 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,820
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$3,670
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$5,490
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$5,490

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.46
49
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.
71
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
84
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
26
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.16 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.26%

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
CountyWESTMORELAND
Lot (acres)The size of the land the home sits on, from county records.0.10
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

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

E
Monessen Elementary CenterC-
Elementary · Grades KG–5 · 0.8 mi
M
Monessen Middle SchoolD
Middle · Grades 6–8 · 1.2 mi
H
Monessen High SchoolD-
High · Grades 9–12 · 1.2 mi

District: Monessen City School District

Neighborhood · ZIP 15062These 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.132
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.80
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.30

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.83%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.18%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.6,986
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,936 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$55,570
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$66,844
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.40 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.45%

Owner Tools

Do you own this home?
Claim this home

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

521 Ontario St 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 Westmoreland County
  • Has a smaller lot than 88% of homes in Westmoreland County

What homes are worth in Monessen 15062

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

This home
$20K$231K

This home is worth more than 7% of homes in Monessen 15062.

How it measures up in Monessen 15062

The dot is this home. The mark in the middle is the typical home in Monessen 15062.

Estimated value$24,405
CheaperTypical $83,042Pricier

Pricier than 7% of homes nearby

Lot size0.1 ac
SmallerTypical 0.15 acBigger

Bigger than 31% of homes nearby

How 521 Ontario St ranks against every home in each area.
MeasureThis homeMonessen 15062Westmoreland County
Estimated valuepricier than$24,4057% of homesalmost no homes
Lot sizebigger than0.1 ac31% of homes12% of homes

About 521 Ontario St

How much is 521 Ontario St, Monessen, PA worth?

The TopHap Estimate for 521 Ontario St, Monessen, PA is $24,405 as of Aug 30, 2026. The likely range is $14,352 to $34,458. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 521 Ontario St, Monessen, PA last sell?

521 Ontario St, Monessen, PA last sold on Oct 14, 2020 for $2,800, according to the county's recorded deed.

What schools serve 521 Ontario St, Monessen, PA?

521 Ontario St, Monessen, PA is assigned to Monessen Elementary Center (elementary), rated C-; Monessen Middle School (middle), rated D; Monessen High School (high), rated D-. All sit in Monessen City School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 521 Ontario St, Monessen, PA compare to other homes in Monessen 15062?

Among the 3,624 homes in Monessen 15062, it is worth more than 7% of them ($24,405 against a typical $83,042) and its lot is bigger than 31% of them (0.1 ac against a typical 0.15 ac). Measured against all of Westmoreland 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 521 Ontario St, Monessen, PA?

The 2026 property tax bill for 521 Ontario St, Monessen, PA was $869. The county assessed it at $5,490.

More homes on Ontario St

Closest homes

More homes in Monessen 15062

Assigned schools

Explore the area

See this home in context

Open 521 Ontario St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map