Skip to content
Skip to content
TopHapOpen in map
Residential - Vacant LandResidential
$320,100
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 48How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $155,000 on Sep 11, 2003

21 KEYSTONE PL

HOUSTON, PA 15342
0
Baths
2,483 ft²
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$320K
$152K low$488K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$155,000 · Sep 11, 2003

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$17 (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.$900 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$900

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.40
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
8
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
73
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
88
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
31
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential - Vacant Land
CountyWASHINGTON
Lot (acres)The size of the land the home sits on, from county records.0.06
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.

M
Chartiers-Houston Jr. / Sr. High SchoolB+
Middle · Grades 7–12 · 0.6 mi
E
Allison Park Elementary SchoolB-
Elementary · Grades KG–6 · 1.0 mi

District: Chartiers-Houston School District

Neighborhood · ZIP 15342These 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.63
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 100.27

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.26%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.7%
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.4,572
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,399 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$90,341
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$116,938
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.39 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.45%

Owner Tools

Do you own this home?
Claim this home

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 Keystone Pl 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 74% of homes in Houston 15342
  • Among the smallest lots in Houston 15342

What homes are worth in Houston 15342

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

This home
$81K$573K

This home is worth more than 74% of homes in Houston 15342.

How it measures up in Houston 15342

The dot is this home. The mark in the middle is the typical home in Houston 15342.

Estimated value$320,100
CheaperTypical $249,421Pricier

Pricier than 74% of homes nearby

Lot size2,483 ft²
SmallerTypical 0.25 acBigger

Smaller than almost all homes nearby

How 21 Keystone Pl ranks against every home in each area.
MeasureThis homeHouston 15342Washington County
Estimated valuepricier than$320,10074% of homes68% of homes
Lot sizebigger than2,483 ft²almost no homes5% of homes

About 21 Keystone Pl

How much is 21 Keystone Pl, Houston, PA worth?

The TopHap Estimate for 21 Keystone Pl, Houston, PA is $320,100 as of Jul 14, 2026. The likely range is $152,423 to $487,777. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Keystone Pl, Houston, PA last sell?

21 Keystone Pl, Houston, PA last sold on Sep 11, 2003 for $155,000, according to the county's recorded deed.

What schools serve 21 Keystone Pl, Houston, PA?

21 Keystone Pl, Houston, PA is assigned to Chartiers-Houston Jr. / Sr. High School (middle), rated B+; Allison Park Elementary School (elementary), rated B-. All sit in Chartiers-Houston School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Keystone Pl, Houston, PA compare to other homes in Houston 15342?

Among the 2,101 homes in Houston 15342, it is worth more than 74% of them ($320,100 against a typical $249,421) and its lot is bigger than almost none of them (2,483 ft² against a typical 0.25 ac). Measured against all of Washington County, it is worth more than 68% 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 Keystone Pl, Houston, PA?

The 2026 property tax bill for 21 Keystone Pl, Houston, PA was $17. The county assessed it at $900.

More homes on Keystone Pl

Closest homes

More homes in Houston 15342

Assigned schools

Explore the area

See this home in context

Open 21 Keystone Pl on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map