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Single Family ResidenceResidential
$536,929$205 / 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 96How 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 $426,000 on Aug 13, 2021

521 DARTMOUTH DR

KING OF PRUSSIA, PA 19406
3
Beds
2.5
Baths
2,616 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
1958
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.

Valuation

$537K
$517K low$557K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$426,000 · Aug 13, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,760 (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.$138,260 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$138,260
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$138,260

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
CountyMONTGOMERY
Lot (acres)The size of the land the home sits on, from county records.0.23
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
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(4)

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
Candlebrook Elementary SchoolA
Elementary · Grades KG–4 · 0.6 mi
M
Upper Merion Area Middle SchoolB-
Middle · Grades 5–8 · 0.8 mi
H
Upper Merion Area High SchoolB
High · Grades 9–12 · 0.8 mi

District: Upper Merion Area School District

Neighborhood · ZIP 19406These 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.104
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.99
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.83

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.41%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.7%
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.29,401
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,170 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$109,886
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$128,559
Average tempThe average temperature here across a full year.54°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.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

521 Dartmouth Dr 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.

  • Costs less per square foot than 87% of homes in King of Prussia 19406
  • Bigger than 80% of homes in King of Prussia 19406

What homes are worth in King of Prussia 19406

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

This home
$61K$933K

This home is worth more than 59% of homes in King of Prussia 19406.

How it measures up in King of Prussia 19406

The dot is this home. The mark in the middle is the typical home in King of Prussia 19406.

Estimated value$536,929
CheaperTypical $502,726Pricier

Pricier than 59% of homes nearby

Price per ft²$205
CheaperTypical $265Pricier

Pricier than 13% of homes nearby

Living area2,616 ft²
SmallerTypical 1,904 ft²Bigger

Bigger than 80% of homes nearby

Lot size0.23 ac
SmallerTypical 0.2 acBigger

Bigger than 57% of homes nearby

Year built1958
OlderTypical 1966Newer

Newer than 37% of homes nearby

How 521 Dartmouth Dr ranks against every home in each area.
MeasureThis homeKing of Prussia 19406Montgomery County
Estimated valuepricier than$536,92959% of homes56% of homes
Price per ft²pricier than$20513% of homes21% of homes
Living areabigger than2,616 ft²80% of homes71% of homes
Lot sizebigger than0.23 ac57% of homes49% of homes
Year builtnewer than195837% of homes40% of homes

About 521 Dartmouth Dr

How much is 521 Dartmouth Dr, King Of Prussia, PA worth?

The TopHap Estimate for 521 Dartmouth Dr, King Of Prussia, PA is $536,929 as of Sep 24, 2026. The likely range is $517,267 to $556,591. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 521 Dartmouth Dr, King Of Prussia, PA last sell?

521 Dartmouth Dr, King Of Prussia, PA last sold on Aug 13, 2021 for $426,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 521 Dartmouth Dr, King Of Prussia, PA?

521 Dartmouth Dr, King Of Prussia, PA has 3 bedrooms, 2.5 bathrooms, 2,616 square feet of living space and a 0.23-acre lot.

When was 521 Dartmouth Dr, King Of Prussia, PA built?

521 Dartmouth Dr, King Of Prussia, PA was built in 1958, making it 68 years old. It is a split level home. The building has 1 story.

What schools serve 521 Dartmouth Dr, King Of Prussia, PA?

521 Dartmouth Dr, King Of Prussia, PA is assigned to Candlebrook Elementary School (elementary), rated A; Upper Merion Area Middle School (middle), rated B-; Upper Merion Area High School (high), rated B. All sit in Upper Merion Area School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 521 Dartmouth Dr, King Of Prussia, PA compare to other homes in King of Prussia 19406?

Among the 7,643 homes in King of Prussia 19406, it is worth more than 59% of them ($536,929 against a typical $502,726), its price per square foot is higher than 13% of them ($205 against a typical $265), it is bigger than 80% of them (2,616 ft² against a typical 1,904 ft²), its lot is bigger than 57% of them (0.23 ac against a typical 0.2 ac) and it is newer than 37% of them (1958 against a typical 1966). Measured against all of Montgomery County, it is worth more than 56% 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 521 Dartmouth Dr, King Of Prussia, PA?

The 2026 property tax bill for 521 Dartmouth Dr, King Of Prussia, PA was $4,760. The county assessed it at $138,260.

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