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Single Family ResidenceResidential
$540,929$149 / 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 95How 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

435 SENECA ST

BETHLEHEM, PA 18015
4
Beds
3 / 1
Baths
3,622 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.
1900
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

$541K
$512K low$570K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$846 (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.$78,300 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$15,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$62,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$78,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$156,600

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.Custom Design
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.Yes
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

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.

M
Broughal Middle SchoolD-
Middle · Grades 6–8 · 0.4 mi
E
Fountain Hill Elementary SchoolF
Elementary · Grades PK–5 · 0.9 mi
H
Liberty High SchoolD
High · Grades 9–12 · 1.6 mi

District: Bethlehem Area School District

Neighborhood · ZIP 18015These 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.120
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.90
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.71

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.15%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.16%
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.37,642
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,719 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$66,214
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$99,329
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.47 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

435 Seneca 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 more than 85% of homes in Bethlehem 18015
  • Costs less per square foot than 91% of homes in Northampton County
  • Bigger than 96% of homes in Northampton County
  • Has a bigger lot than 66% of homes in Bethlehem 18015
  • Older than 79% of homes in Northampton County

What homes are worth in Bethlehem 18015

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

This home
$132K$1.4M

This home is worth more than 85% of homes in Bethlehem 18015.

How it measures up in Bethlehem 18015

The dot is this home. The mark in the middle is the typical home in Bethlehem 18015.

Estimated value$540,929
CheaperTypical $276,421Pricier

Pricier than 85% of homes nearby

Price per ft²$149
CheaperTypical $184Pricier

Pricier than 23% of homes nearby

Living area3,622 ft²
SmallerTypical 1,584 ft²Bigger

Bigger than 93% of homes nearby

Lot size0.25 ac
SmallerTypical 0.12 acBigger

Bigger than 66% of homes nearby

Year built1900
OlderTypical 1920Newer

Newer than 36% of homes nearby

How 435 Seneca St ranks against every home in each area.
MeasureThis homeBethlehem 18015Northampton County
Estimated valuepricier than$540,92985% of homes81% of homes
Price per ft²pricier than$14923% of homes9% of homes
Living areabigger than3,622 ft²93% of homes96% of homes
Lot sizebigger than0.25 ac66% of homes49% of homes
Year builtnewer than190036% of homes21% of homes

About 435 Seneca St

How much is 435 Seneca St, Bethlehem, PA worth?

The TopHap Estimate for 435 Seneca St, Bethlehem, PA is $540,929 as of Sep 24, 2026. The likely range is $511,832 to $570,025. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 435 Seneca St, Bethlehem, PA?

435 Seneca St, Bethlehem, PA has 4 bedrooms, 3 bathrooms, 3,622 square feet of living space and a 0.25-acre lot.

When was 435 Seneca St, Bethlehem, PA built?

435 Seneca St, Bethlehem, PA was built in 1900, making it 126 years old. It is a custom design home. The building has 2 stories.

What schools serve 435 Seneca St, Bethlehem, PA?

435 Seneca St, Bethlehem, PA is assigned to Broughal Middle School (middle), rated D-; Fountain Hill Elementary School (elementary), rated F; 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 435 Seneca St, Bethlehem, PA compare to other homes in Bethlehem 18015?

Among the 8,645 homes in Bethlehem 18015, it is worth more than 85% of them ($540,929 against a typical $276,421), its price per square foot is higher than 23% of them ($149 against a typical $184), it is bigger than 93% of them (3,622 ft² against a typical 1,584 ft²), its lot is bigger than 66% of them (0.25 ac against a typical 0.12 ac) and it is newer than 36% of them (1900 against a typical 1920). Measured against all of Northampton County, it is worth more than 81% 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 435 Seneca St, Bethlehem, PA?

The 2026 property tax bill for 435 Seneca St, Bethlehem, PA was $846. The county assessed it at $78,300.

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