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Single Family ResidenceResidential
$77,788$50 / 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 91How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026

421 ALEXANDER ST

MC KEES ROCKS, PA 15136
3
Beds
2
Baths
1,566 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.
2,400 ft²
Lot SizeThe size of the land the home sits on, from county records.
1910
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$78K
$71K low$85K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$133 (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.$20,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$5,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$14,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$20,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$38,700

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.36
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
4
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
75
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
73
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
31
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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
CountyALLEGHENY
Lot (acres)The size of the land the home sits on, from county records.0.06
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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.

H
Sto-Rox High SchoolD
High · Grades 9–12 · 0.7 mi
M
Sto-Rox Middle School
Middle · Grades 6–8 · 0.8 mi
E
Sto-Rox Elementary SchoolF
Elementary · Grades KG–5 · 2.4 mi

District: Sto-Rox School District

Neighborhood · ZIP 15136These 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.112
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.100
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.24

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.88%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.22%
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.1.0%
PopulationHow many people live in this area.23,687
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,923 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$69,379
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$83,488
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.37 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.45%

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

421 Alexander 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.

  • Worth less than 91% of homes in Allegheny County
  • Costs less per square foot than 93% of homes in Allegheny County
  • Has a smaller lot than 89% of homes in Allegheny County
  • Older than 84% of homes in Allegheny County

What homes are worth in Mc Kees Rocks 15136

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

This home
$35K$673K

This home is worth more than 21% of homes in Mc Kees Rocks 15136.

How it measures up in Mc Kees Rocks 15136

The dot is this home. The mark in the middle is the typical home in Mc Kees Rocks 15136.

Estimated value$77,788
CheaperTypical $185,706Pricier

Pricier than 21% of homes nearby

Price per ft²$50
CheaperTypical $143Pricier

Pricier than 16% of homes nearby

Living area1,566 ft²
SmallerTypical 1,447 ft²Bigger

Bigger than 59% of homes nearby

Lot size2,400 ft²
SmallerTypical 0.15 acBigger

Bigger than 18% of homes nearby

Year built1910
OlderTypical 1951Newer

Newer than 20% of homes nearby

How 421 Alexander St ranks against every home in each area.
MeasureThis homeMc Kees Rocks 15136Allegheny County
Estimated valuepricier than$77,78821% of homes9% of homes
Price per ft²pricier than$5016% of homes7% of homes
Living areabigger than1,566 ft²59% of homes54% of homes
Lot sizebigger than2,400 ft²18% of homes11% of homes
Year builtnewer than191020% of homes16% of homes

About 421 Alexander St

How much is 421 Alexander St, Mc Kees Rocks, PA worth?

The TopHap Estimate for 421 Alexander St, Mc Kees Rocks, PA is $77,788 as of Jul 14, 2026. The likely range is $70,933 to $84,643. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Alexander St, Mc Kees Rocks, PA last sell?

421 Alexander St, Mc Kees Rocks, PA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 421 Alexander St, Mc Kees Rocks, PA?

421 Alexander St, Mc Kees Rocks, PA has 3 bedrooms, 2 bathrooms, 1,566 square feet of living space and a 0.06-acre lot.

When was 421 Alexander St, Mc Kees Rocks, PA built?

421 Alexander St, Mc Kees Rocks, PA was built in 1910, making it 116 years old. The building has 1 story.

What schools serve 421 Alexander St, Mc Kees Rocks, PA?

421 Alexander St, Mc Kees Rocks, PA is assigned to Sto-Rox High School (high), rated D; Sto-Rox Middle School (middle); Sto-Rox Elementary School (elementary), rated F. All sit in Sto-Rox School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Alexander St, Mc Kees Rocks, PA compare to other homes in Mc Kees Rocks 15136?

Among the 9,151 homes in Mc Kees Rocks 15136, it is worth more than 21% of them ($77,788 against a typical $185,706), its price per square foot is higher than 16% of them ($50 against a typical $143), it is bigger than 59% of them (1,566 ft² against a typical 1,447 ft²), its lot is bigger than 18% of them (2,400 ft² against a typical 0.15 ac) and it is newer than 20% of them (1910 against a typical 1951). Measured against all of Allegheny County, it is worth more than 9% of 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 421 Alexander St, Mc Kees Rocks, PA?

The 2026 property tax bill for 421 Alexander St, Mc Kees Rocks, PA was $133. The county assessed it at $20,700.

More homes on Alexander St

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Assigned schools

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