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Single Family ResidenceResidential
$1,124,035$394 / 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 94How 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 $699,900 on Jan 3, 2005

21 ALLEN ST

BASKING RIDGE, NJ 07920
0
Baths
2,850 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.
0.53 ac
Lot SizeThe size of the land the home sits on, from county records.
1928
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.1M
$1.1M low$1.2M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$699,900 · Jan 3, 2005

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$15,405 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$950,600 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$401,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$549,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$912,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$950,600

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.45
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
19
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
68
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
97
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
43
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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
StyleThe architectural style of the home, such as ranch or colonial.Cape Cod
CountySOMERSET
Lot (acres)The size of the land the home sits on, from county records.0.53
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
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(1)

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
Oak Street Elementary SchoolA
Elementary · Grades KG–5 · 0.2 mi
H
Ridge High SchoolB+
High · Grades 9–12 · 1.0 mi
M
William Annin Middle SchoolA
Middle · Grades 6–8 · 1.9 mi

District: Bernards Township School District

Neighborhood · ZIP 07920These 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.20
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.96
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.102

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.36%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.6%
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.28,676
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,109 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$170,540
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$228,687
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.51 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

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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 Allen 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 Somerset County
  • Costs more per square foot than 73% of homes in Somerset County
  • Bigger than 79% of homes in Somerset County
  • Has a bigger lot than 66% of homes in Somerset County
  • Older than 96% of homes in Basking Ridge 07920

What homes are worth in Basking Ridge 07920

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

This home
$246K$2.4M

This home is worth more than 64% of homes in Basking Ridge 07920.

How it measures up in Basking Ridge 07920

The dot is this home. The mark in the middle is the typical home in Basking Ridge 07920.

Estimated value$1,124,035
CheaperTypical $912,128Pricier

Pricier than 64% of homes nearby

Price per ft²$394
CheaperTypical $419Pricier

Pricier than 34% of homes nearby

Living area2,850 ft²
SmallerTypical 2,136 ft²Bigger

Bigger than 71% of homes nearby

Lot size0.53 ac
SmallerTypical 0.32 acBigger

Bigger than 58% of homes nearby

Year built1928
OlderTypical 1986Newer

Newer than 4% of homes nearby

How 21 Allen St ranks against every home in each area.
MeasureThis homeBasking Ridge 07920Somerset County
Estimated valuepricier than$1,124,03564% of homes85% of homes
Price per ft²pricier than$39434% of homes73% of homes
Living areabigger than2,850 ft²71% of homes79% of homes
Lot sizebigger than0.53 ac58% of homes66% of homes
Year builtnewer than19284% of homes8% of homes

About 21 Allen St

How much is 21 Allen St, Basking Ridge, NJ worth?

The TopHap Estimate for 21 Allen St, Basking Ridge, NJ is $1,124,035 as of Sep 24, 2026. The likely range is $1,054,911 to $1,193,159. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Allen St, Basking Ridge, NJ last sell?

21 Allen St, Basking Ridge, NJ last sold on Jan 3, 2005 for $699,900, according to the county's recorded deed.

How big is 21 Allen St, Basking Ridge, NJ?

21 Allen St, Basking Ridge, NJ has 2,850 square feet of living space and a 0.53-acre lot.

When was 21 Allen St, Basking Ridge, NJ built?

21 Allen St, Basking Ridge, NJ was built in 1928, making it 98 years old. It is a cape cod home. The building has 1 story.

What schools serve 21 Allen St, Basking Ridge, NJ?

21 Allen St, Basking Ridge, NJ is assigned to Oak Street Elementary School (elementary), rated A; Ridge High School (high), rated B+; William Annin Middle School (middle), rated A. All sit in Bernards Township School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Allen St, Basking Ridge, NJ compare to other homes in Basking Ridge 07920?

Among the 9,639 homes in Basking Ridge 07920, it is worth more than 64% of them ($1,124,035 against a typical $912,128), its price per square foot is higher than 34% of them ($394 against a typical $419), it is bigger than 71% of them (2,850 ft² against a typical 2,136 ft²), its lot is bigger than 58% of them (0.53 ac against a typical 0.32 ac) and it is newer than 4% of them (1928 against a typical 1986). Measured against all of Somerset County, it is worth more than 85% 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 Allen St, Basking Ridge, NJ?

The 2025 property tax bill for 21 Allen St, Basking Ridge, NJ was $15,405. The county assessed it at $950,600.

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