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Single Family ResidenceResidential
$64,119$29 / 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 82How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $44,000 on Dec 14, 2020

121 HELEN ST

MC KEES ROCKS, PA 15136
4
Beds
1.5
Baths
2,218 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.
2,970 ft²
Lot SizeThe size of the land the home sits on, from county records.
1925
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$64K
$53K low$76K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$44,000 · Dec 14, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$91 (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.$14,100 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$7,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$6,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$14,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$14,100

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
52
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
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.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.5 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.34%
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.0.2 percent flood zone

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.0.07
ConstructionThe main material the home's frame and walls are built from.Brick
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

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.

M
Sto-Rox Middle School
Middle · Grades 6–8 · 0.8 mi
H
Sto-Rox High SchoolF
High · Grades 9–12 · 1.0 mi
E
Sto-Rox Elementary SchoolF
Elementary · Grades KG–5 · 2.5 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%

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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

121 Helen 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 93% of homes in Allegheny County
  • Costs less per square foot than 98% of homes in Mc Kees Rocks 15136
  • Bigger than 85% of homes in Mc Kees Rocks 15136
  • Has a smaller lot than 83% of homes in Allegheny County
  • Older than 73% 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
$34K$692K

This home is worth more than 17% 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$64,119
CheaperTypical $183,371Pricier

Pricier than 17% of homes nearby

Price per ft²$29
CheaperTypical $141Pricier

Pricier than 2% of homes nearby

Living area2,218 ft²
SmallerTypical 1,444 ft²Bigger

Bigger than 85% of homes nearby

Lot size2,970 ft²
SmallerTypical 0.15 acBigger

Bigger than 28% of homes nearby

Year built1925
OlderTypical 1951Newer

Newer than 33% of homes nearby

How 121 Helen St ranks against every home in each area.
MeasureThis homeMc Kees Rocks 15136Allegheny County
Estimated valuepricier than$64,11917% of homes7% of homes
Price per ft²pricier than$292% of homes2% of homes
Living areabigger than2,218 ft²85% of homes81% of homes
Lot sizebigger than2,970 ft²28% of homes17% of homes
Year builtnewer than192533% of homes27% of homes

About 121 Helen St

How much is 121 Helen St, Mc Kees Rocks, PA worth?

The TopHap Estimate for 121 Helen St, Mc Kees Rocks, PA is $64,119 as of Sep 24, 2026. The likely range is $52,687 to $75,551. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 121 Helen St, Mc Kees Rocks, PA last sell?

121 Helen St, Mc Kees Rocks, PA last sold on Dec 14, 2020 for $44,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 121 Helen St, Mc Kees Rocks, PA?

121 Helen St, Mc Kees Rocks, PA has 4 bedrooms, 1.5 bathrooms, 2,218 square feet of living space and a 0.07-acre lot.

When was 121 Helen St, Mc Kees Rocks, PA built?

121 Helen St, Mc Kees Rocks, PA was built in 1925, making it 101 years old. The building has 2 stories.

What schools serve 121 Helen St, Mc Kees Rocks, PA?

121 Helen St, Mc Kees Rocks, PA is assigned to Sto-Rox Middle School (middle); Sto-Rox High School (high), rated F; 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 121 Helen St, Mc Kees Rocks, PA compare to other homes in Mc Kees Rocks 15136?

Among the 9,145 homes in Mc Kees Rocks 15136, it is worth more than 17% of them ($64,119 against a typical $183,371), its price per square foot is higher than 2% of them ($29 against a typical $141), it is bigger than 85% of them (2,218 ft² against a typical 1,444 ft²), its lot is bigger than 28% of them (2,970 ft² against a typical 0.15 ac) and it is newer than 33% of them (1925 against a typical 1951). Measured against all of Allegheny County, it is worth more than 7% 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 121 Helen St, Mc Kees Rocks, PA?

The 2026 property tax bill for 121 Helen St, Mc Kees Rocks, PA was $91. The county assessed it at $14,100.

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