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Single Family ResidenceResidential
$288,473$277 / 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 Sep 24, 2026
Last sold for $174,000 on Sep 21, 2004

3136 KEYSTONE ST

BETHLEHEM, PA 18020
3
Beds
1
Baths
1,040 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.
0.25 ac
Lot SizeThe size of the land the home sits on, from county records.
1972
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$288K
$261K low$316K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$174,000 · Sep 21, 2004

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$557 (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.$51,600 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$18,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$32,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$51,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$103,200

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.Ranch
CountyNorthampton
Lot (acres)The size of the land the home sits on, from county records.0.25
HeatingThe type of heating system in the home.Hot Water
CoolingThe type of cooling or air conditioning in the home.None
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached

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
Governor Wolf Elementary SchoolC-
Elementary · Grades KG–5 · 0.8 mi
H
Freedom High SchoolD+
High · Grades 9–12 · 1.4 mi
M
East Hills Middle SchoolD+
Middle · Grades 6–8 · 1.5 mi

District: Bethlehem Area School District

Neighborhood · ZIP 18020These 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.44
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.86
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.72

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.26%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.22,775
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,670 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$111,561
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$138,295
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.46 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.53%

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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

3136 Keystone 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 90% of homes in Bethlehem 18020
  • Costs more per square foot than 89% of homes in Bethlehem 18020
  • Smaller than 94% of homes in Bethlehem 18020
  • Older than 70% of homes in Bethlehem 18020

What homes are worth in Bethlehem 18020

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

This home
$236K$973K

This home is worth more than 10% of homes in Bethlehem 18020.

How it measures up in Bethlehem 18020

The dot is this home. The mark in the middle is the typical home in Bethlehem 18020.

Estimated value$288,473
CheaperTypical $442,475Pricier

Pricier than 10% of homes nearby

Price per ft²$277
CheaperTypical $233Pricier

Pricier than 89% of homes nearby

Living area1,040 ft²
SmallerTypical 1,920 ft²Bigger

Bigger than 6% of homes nearby

Lot size0.25 ac
SmallerTypical 0.29 acBigger

Bigger than 40% of homes nearby

Year built1972
OlderTypical 1984Newer

Newer than 30% of homes nearby

How 3136 Keystone St ranks against every home in each area.
MeasureThis homeBethlehem 18020Northampton County
Estimated valuepricier than$288,47310% of homes29% of homes
Price per ft²pricier than$27789% of homes88% of homes
Living areabigger than1,040 ft²6% of homes8% of homes
Lot sizebigger than0.25 ac40% of homes48% of homes
Year builtnewer than197230% of homes56% of homes

About 3136 Keystone St

How much is 3136 Keystone St, Bethlehem, PA worth?

The TopHap Estimate for 3136 Keystone St, Bethlehem, PA is $288,473 as of Sep 24, 2026. The likely range is $261,120 to $315,826. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3136 Keystone St, Bethlehem, PA last sell?

3136 Keystone St, Bethlehem, PA last sold on Sep 21, 2004 for $174,000, according to the county's recorded deed.

How big is 3136 Keystone St, Bethlehem, PA?

3136 Keystone St, Bethlehem, PA has 3 bedrooms, 1 bathrooms, 1,040 square feet of living space and a 0.25-acre lot.

When was 3136 Keystone St, Bethlehem, PA built?

3136 Keystone St, Bethlehem, PA was built in 1972, making it 54 years old. It is a ranch home. The building has 1 story.

What schools serve 3136 Keystone St, Bethlehem, PA?

3136 Keystone St, Bethlehem, PA is assigned to Governor Wolf Elementary School (elementary), rated C-; Freedom High School (high), rated D+; East Hills Middle School (middle), rated D+. All sit in Bethlehem Area School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3136 Keystone St, Bethlehem, PA compare to other homes in Bethlehem 18020?

Among the 6,982 homes in Bethlehem 18020, it is worth more than 10% of them ($288,473 against a typical $442,475), its price per square foot is higher than 89% of them ($277 against a typical $233), it is bigger than 6% of them (1,040 ft² against a typical 1,920 ft²), its lot is bigger than 40% of them (0.25 ac against a typical 0.29 ac) and it is newer than 30% of them (1972 against a typical 1984). Measured against all of Northampton County, it is worth more than 29% 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 3136 Keystone St, Bethlehem, PA?

The 2026 property tax bill for 3136 Keystone St, Bethlehem, PA was $557. The county assessed it at $51,600.

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