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Single Family ResidenceResidential
$1,929,368$175 / 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 88How 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 $1,200,000 on Sep 23, 2002

831 BLACK ROCK RD

GLADWYNE, PA 19035
5
Beds
7.5
Baths
11,007 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.
1.96 ac
Lot SizeThe size of the land the home sits on, from county records.
2004
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
18
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$1.9M
$1.7M low$2.2M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,200,000 · Sep 23, 2002

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$89,398 (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.$1,956,980 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,956,980
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,956,980

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.7 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.Colonial
CountyMONTGOMERY
ConstructionThe main material the home's frame and walls are built from.Masonry/Concrete Masonry Units (Cmus)
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
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.No Garage
PoolWhether the property has a pool, and what kind, such as in-ground.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 1,267 ft²Porch · 534 ft²

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.

E
Gladwyne Elementary SchoolA+
Elementary · Grades KG–4 · 0.4 mi
M
Black Rock Middle SchoolA+
Middle · Grades 5–8 · 0.7 mi
H
Harriton High SchoolA+
High · Grades 9–12 · 1.7 mi

District: Lower Merion School District

Neighborhood · ZIP 19035These 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.51
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.97
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.79

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.1.2%
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.4,448
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.897 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$277,419
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$399,915
Average tempThe average temperature here across a full year.54°F
Annual precipHow much rain and melted snow falls here in a typical year.48 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

831 Black Rock Rd 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.

  • Among the most valuable homes in Montgomery County
  • Among the lowest price per square foot in Gladwyne 19035
  • Among the largest homes in Montgomery County
  • Has a bigger lot than 96% of homes in Montgomery County
  • Newer than 90% of homes in Montgomery County

What homes are worth in Gladwyne 19035

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

This home
$690K$4.5M

This home is worth more than 67% of homes in Gladwyne 19035.

How it measures up in Gladwyne 19035

The dot is this home. The mark in the middle is the typical home in Gladwyne 19035.

Estimated value$1,929,368
CheaperTypical $1,595,599Pricier

Pricier than 67% of homes nearby

Price per ft²$175
CheaperTypical $382Pricier

Cheaper than almost all homes nearby

Living area11,007 ft²
SmallerTypical 4,217 ft²Bigger

Bigger than 95% of homes nearby

Lot size1.96 ac
SmallerTypical 0.87 acBigger

Bigger than 84% of homes nearby

Year built2004
OlderTypical 1960Newer

Newer than 89% of homes nearby

How 831 Black Rock Rd ranks against every home in each area.
MeasureThis homeGladwyne 19035Montgomery County
Estimated valuepricier than$1,929,36867% of homesalmost all homes
Price per ft²pricier than$175almost no homes10% of homes
Living areabigger than11,007 ft²95% of homesalmost all homes
Lot sizebigger than1.96 ac84% of homes96% of homes
Year builtnewer than200489% of homes90% of homes

About 831 Black Rock Rd

How much is 831 Black Rock Rd, Gladwyne, PA worth?

The TopHap Estimate for 831 Black Rock Rd, Gladwyne, PA is $1,929,368 as of Sep 24, 2026. The likely range is $1,699,574 to $2,159,162. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 831 Black Rock Rd, Gladwyne, PA last sell?

831 Black Rock Rd, Gladwyne, PA last sold on Sep 23, 2002 for $1,200,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 831 Black Rock Rd, Gladwyne, PA?

831 Black Rock Rd, Gladwyne, PA has 5 bedrooms, 7.5 bathrooms and 11,007 square feet of living space.

When was 831 Black Rock Rd, Gladwyne, PA built?

831 Black Rock Rd, Gladwyne, PA was built in 2004, making it 22 years old. It is a colonial home. The building has 2 stories.

What schools serve 831 Black Rock Rd, Gladwyne, PA?

831 Black Rock Rd, Gladwyne, PA is assigned to Gladwyne Elementary School (elementary), rated A+; Black Rock Middle School (middle), rated A+; Harriton High School (high), rated A+. All sit in Lower Merion School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 831 Black Rock Rd, Gladwyne, PA compare to other homes in Gladwyne 19035?

Among the 1,385 homes in Gladwyne 19035, it is worth more than 67% of them ($1,929,368 against a typical $1,595,599), its price per square foot is higher than almost none of them ($175 against a typical $382), it is bigger than 95% of them (11,007 ft² against a typical 4,217 ft²), its lot is bigger than 84% of them (1.96 ac against a typical 0.87 ac) and it is newer than 89% of them (2004 against a typical 1960). Measured against all of Montgomery County, it is worth more than almost all 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 831 Black Rock Rd, Gladwyne, PA?

The 2026 property tax bill for 831 Black Rock Rd, Gladwyne, PA was $89,398. The county assessed it at $1,956,980.

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