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Single Family ResidenceResidential
$203,322$217 / 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 78How 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

421 PROSPECT AVE

BETHLEHEM, PA 18018
3
Beds
1
Baths
935 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1874
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.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$203K
$159K low$248K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,894 (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.$98,400 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$24,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$74,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$98,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$98,400

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.Split Level
CountyLehigh
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Baseboard
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached

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

E
Calypso Elementary SchoolB
Elementary · Grades PK–5 · 0.4 mi
M
Nitschmann Middle SchoolB-
Middle · Grades 6–8 · 0.7 mi
H
Liberty High SchoolD+
High · Grades 9–12 · 1.1 mi

District: Bethlehem Area School District

Neighborhood · ZIP 18018These 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.129
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.91
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.70

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.15%
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.33,847
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6,411 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$67,513
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$92,632
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.45 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

421 Prospect 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.

  • Worth less than 94% of homes in Bethlehem 18018
  • Smaller than 96% of homes in Lehigh County
  • Among the oldest homes in Bethlehem 18018

What homes are worth in Bethlehem 18018

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

This home
$182K$636K

This home is worth more than 6% of homes in Bethlehem 18018.

How it measures up in Bethlehem 18018

The dot is this home. The mark in the middle is the typical home in Bethlehem 18018.

Estimated value$203,322
CheaperTypical $290,188Pricier

Pricier than 6% of homes nearby

Price per ft²$217
CheaperTypical $197Pricier

Pricier than 64% of homes nearby

Living area935 ft²
SmallerTypical 1,458 ft²Bigger

Bigger than 5% of homes nearby

Lot size0.15 ac
SmallerTypical 4,182 ft²Bigger

Bigger than 64% of homes nearby

Year built1874
OlderTypical 1925Newer

Older than almost all homes nearby

How 421 Prospect Ave ranks against every home in each area.
MeasureThis homeBethlehem 18018Lehigh County
Estimated valuepricier than$203,3226% of homes9% of homes
Price per ft²pricier than$21764% of homes57% of homes
Living areabigger than935 ft²5% of homes4% of homes
Lot sizebigger than0.15 ac64% of homes37% of homes
Year builtnewer than1874almost no homes3% of homes

About 421 Prospect Ave

How much is 421 Prospect Ave, Bethlehem, PA worth?

The TopHap Estimate for 421 Prospect Ave, Bethlehem, PA is $203,322 as of Aug 30, 2026. The likely range is $158,753 to $247,891. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 421 Prospect Ave, Bethlehem, PA?

421 Prospect Ave, Bethlehem, PA has 3 bedrooms, 1 bathrooms and 935 square feet of living space.

When was 421 Prospect Ave, Bethlehem, PA built?

421 Prospect Ave, Bethlehem, PA was built in 1874, making it 152 years old. It is a split level home. The building has 2 stories.

What schools serve 421 Prospect Ave, Bethlehem, PA?

421 Prospect Ave, Bethlehem, PA is assigned to Calypso Elementary School (elementary), rated B; Nitschmann Middle School (middle), rated B-; Liberty High School (high), rated D+. All sit in Bethlehem Area School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Prospect Ave, Bethlehem, PA compare to other homes in Bethlehem 18018?

Among the 9,659 homes in Bethlehem 18018, it is worth more than 6% of them ($203,322 against a typical $290,188), its price per square foot is higher than 64% of them ($217 against a typical $197), it is bigger than 5% of them (935 ft² against a typical 1,458 ft²), its lot is bigger than 64% of them (0.15 ac against a typical 4,182 ft²) and it is newer than almost none of them (1874 against a typical 1925). Measured against all of Lehigh 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 Prospect Ave, Bethlehem, PA?

The 2026 property tax bill for 421 Prospect Ave, Bethlehem, PA was $2,894. The county assessed it at $98,400.

More homes on Prospect Ave

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Assigned schools

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