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Single Family ResidenceResidential
$168,782$141 / 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 85How 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 $160,000 on Oct 20, 2025

21 W LIBERTY ST

ALLENTOWN, PA 18102
3
Beds
1
Baths
1,193 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.
1,450 ft²
Lot SizeThe size of the land the home sits on, from county records.
1860
Year BuiltThe year the home was originally built, according to county records.
2
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.

Valuation

$169K
$143K low$194K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$160,000 · Oct 20, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,372 (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.$41,500 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$4,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$37,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$41,500

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.44 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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.minimal

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
CountyLEHIGH
Lot (acres)The size of the land the home sits on, from county records.0.03
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.No Garage
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.

E
Sheridan Elementary SchoolD
Elementary · Grades 1–5 · 0.3 mi
M
Harrison-Morton Middle SchoolC-
Middle · Grades 6–8 · 0.4 mi
H
Louis E. Dieruff High SchoolD-
High · Grades 9–12 · 1.1 mi

District: Allentown School District

Neighborhood · ZIP 18102These 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.147
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.7.7%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.24%
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.53,079
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.17,055 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$40,504
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$51,244
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

21 W Liberty 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 97% of homes in Lehigh County
  • Costs less per square foot than 91% of homes in Lehigh County
  • Smaller than 83% of homes in Allentown 18102
  • Has a smaller lot than 97% of homes in Lehigh County
  • Among the oldest homes in Allentown 18102

What homes are worth in Allentown 18102

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

This home
$119K$367K

This home is worth more than 19% of homes in Allentown 18102.

How it measures up in Allentown 18102

The dot is this home. The mark in the middle is the typical home in Allentown 18102.

Estimated value$168,782
CheaperTypical $210,036Pricier

Pricier than 19% of homes nearby

Price per ft²$141
CheaperTypical $134Pricier

Pricier than 60% of homes nearby

Living area1,193 ft²
SmallerTypical 1,616 ft²Bigger

Bigger than 17% of homes nearby

Lot size1,450 ft²
SmallerTypical 1,786 ft²Bigger

Bigger than 21% of homes nearby

Year built1860
OlderTypical 1905Newer

Older than almost all homes nearby

How 21 W Liberty St ranks against every home in each area.
MeasureThis home6th WardAllentown 18102Lehigh County
Estimated valuepricier than$168,78233% of homes19% of homes3% of homes
Price per ft²pricier than$14164% of homes60% of homes9% of homes
Living areabigger than1,193 ft²22% of homes17% of homes17% of homes
Lot sizebigger than1,450 ft²25% of homes21% of homes3% of homes
Year builtnewer than18605% of homesalmost no homes2% of homes

About 21 W Liberty St

How much is 21 W Liberty St, Allentown, PA worth?

The TopHap Estimate for 21 W Liberty St, Allentown, PA is $168,782 as of Sep 24, 2026. The likely range is $143,217 to $194,347. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 W Liberty St, Allentown, PA last sell?

21 W Liberty St, Allentown, PA last sold on Oct 20, 2025 for $160,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 21 W Liberty St, Allentown, PA?

21 W Liberty St, Allentown, PA has 3 bedrooms, 1 bathrooms, 1,193 square feet of living space and a 0.03-acre lot.

When was 21 W Liberty St, Allentown, PA built?

21 W Liberty St, Allentown, PA was built in 1860, making it 166 years old. The building has 2 stories.

What schools serve 21 W Liberty St, Allentown, PA?

21 W Liberty St, Allentown, PA is assigned to Sheridan Elementary School (elementary), rated D; Harrison-Morton Middle School (middle), rated C-; Louis E. Dieruff High School (high), rated D-. All sit in Allentown School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 W Liberty St, Allentown, PA compare to other homes in Allentown 18102?

Among the 11,374 homes in Allentown 18102, it is worth more than 19% of them ($168,782 against a typical $210,036), its price per square foot is higher than 60% of them ($141 against a typical $134), it is bigger than 17% of them (1,193 ft² against a typical 1,616 ft²), its lot is bigger than 21% of them (1,450 ft² against a typical 1,786 ft²) and it is newer than almost none of them (1860 against a typical 1905). Measured against all of Lehigh County, it is worth more than 3% 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 21 W Liberty St, Allentown, PA?

The 2026 property tax bill for 21 W Liberty St, Allentown, PA was $1,372. The county assessed it at $41,500.

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