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Single Family ResidenceResidential
$393,305$273 / 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 98How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $184,900 on Dec 12, 2016

646 SUMMIT ST

KING OF PRUSSIA, PA 19406
3
Beds
1.5
Baths
1,440 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.
4,280 ft²
Lot SizeThe size of the land the home sits on, from county records.
1987
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

$393K
$387K low$400K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$184,900 · Dec 12, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,811 (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.$110,710 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$110,710
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$110,710

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.Townhouse
CountyMONTGOMERY
Lot (acres)The size of the land the home sits on, from county records.0.10
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.DeckPatio · 160 ft²

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
Gulph Elementary SchoolC+
Elementary · Grades KG–4 · 1.4 mi
H
Upper Merion Area High SchoolB
High · Grades 9–12 · 2.7 mi
M
Upper Merion Area Middle SchoolB-
Middle · Grades 5–8 · 3.0 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

646 Summit 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 83% of homes in King of Prussia 19406
  • Smaller than 79% of homes in King of Prussia 19406
  • Has a smaller lot than 74% of homes in Montgomery County
  • Newer than 79% 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
$129K$953K

This home is worth more than 17% 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$393,305
CheaperTypical $503,257Pricier

Pricier than 17% of homes nearby

Price per ft²$273
CheaperTypical $269Pricier

Pricier than 53% of homes nearby

Living area1,440 ft²
SmallerTypical 1,904 ft²Bigger

Bigger than 21% of homes nearby

Lot size4,280 ft²
SmallerTypical 0.2 acBigger

Bigger than 31% of homes nearby

Year built1987
OlderTypical 1966Newer

Newer than 79% of homes nearby

How 646 Summit St ranks against every home in each area.
MeasureThis homeKing of Prussia 19406Montgomery County
Estimated valuepricier than$393,30517% of homes26% of homes
Price per ft²pricier than$27353% of homes63% of homes
Living areabigger than1,440 ft²21% of homes25% of homes
Lot sizebigger than4,280 ft²31% of homes26% of homes
Year builtnewer than198779% of homes70% of homes

About 646 Summit St

How much is 646 Summit St, King Of Prussia, PA worth?

The TopHap Estimate for 646 Summit St, King Of Prussia, PA is $393,305 as of Oct 21, 2026. The likely range is $387,043 to $399,567. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 646 Summit St, King Of Prussia, PA last sell?

646 Summit St, King Of Prussia, PA last sold on Dec 12, 2016 for $184,900, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 646 Summit St, King Of Prussia, PA?

646 Summit St, King Of Prussia, PA has 3 bedrooms, 1.5 bathrooms, 1,440 square feet of living space and a 0.10-acre lot.

When was 646 Summit St, King Of Prussia, PA built?

646 Summit St, King Of Prussia, PA was built in 1987, making it 39 years old. It is a townhouse home. The building has 2 stories.

What schools serve 646 Summit St, King Of Prussia, PA?

646 Summit St, King Of Prussia, PA is assigned to Gulph Elementary School (elementary), rated C+; Upper Merion Area High School (high), rated B; Upper Merion Area Middle School (middle), rated B-. All sit in Upper Merion Area School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 646 Summit St, 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 17% of them ($393,305 against a typical $503,257), its price per square foot is higher than 53% of them ($273 against a typical $269), it is bigger than 21% of them (1,440 ft² against a typical 1,904 ft²), its lot is bigger than 31% of them (4,280 ft² against a typical 0.2 ac) and it is newer than 79% of them (1987 against a typical 1966). Measured against all of Montgomery County, it is worth more than 26% 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 646 Summit St, King Of Prussia, PA?

The 2026 property tax bill for 646 Summit St, King Of Prussia, PA was $3,811. The county assessed it at $110,710.

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