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Single Family ResidenceResidential
$55,343$64 / 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 83How 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 $2,400 on Jan 26, 2011

21 SAINT THOMAS ST

PITTSBURGH, PA 15203
2
Beds
1
Baths
864 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.
2,300 ft²
Lot SizeThe size of the land the home sits on, from county records.
1905
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$55K
$46K low$65K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$2,400 · Jan 26, 2011

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$151 (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.$23,500 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$5,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$17,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$23,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$23,500

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.36
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
75
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
77
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
26
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
CountyALLEGHENY
Lot (acres)The size of the land the home sits on, from county records.0.05
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
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(5)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(1)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Pittsburgh Grandview Elementary SchoolC-
Elementary · Grades PK–5 · 0.4 mi
M
Pittsburgh South Hills Middle SchoolC-
Middle · Grades 6–8 · 1.8 mi
H
Carrick High SchoolD+
High · Grades 9–12 · 2.1 mi

District: Pittsburgh School District

Neighborhood · ZIP 15203These 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.169
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.24

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.85%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.38%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.22%
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.11,004
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,809 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$70,626
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$96,514
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.38 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.45%

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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 Saint Thomas 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.

  • Among the least valuable homes in Pittsburgh 15203
  • Costs less per square foot than 96% of homes in Pittsburgh 15203
  • Smaller than 96% of homes in Pittsburgh 15203
  • Has a smaller lot than 91% of homes in Allegheny County
  • Older than 88% of homes in Allegheny County

What homes are worth in Pittsburgh 15203

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

This home
$63K$576K

This home is worth less than almost all homes in Pittsburgh 15203.

How it measures up in Pittsburgh 15203

The dot is this home. The mark in the middle is the typical home in Pittsburgh 15203.

Estimated value$55,343
CheaperTypical $195,531Pricier

Cheaper than almost all homes nearby

Price per ft²$64
CheaperTypical $135Pricier

Pricier than 4% of homes nearby

Living area864 ft²
SmallerTypical 1,535 ft²Bigger

Bigger than 4% of homes nearby

Lot size2,300 ft²
SmallerTypical 1,481 ft²Bigger

Bigger than 71% of homes nearby

Year built1905
OlderTypical 1900Newer

Newer than 76% of homes nearby

How 21 Saint Thomas St ranks against every home in each area.
MeasureThis homeSouth Side SlopesPittsburgh 15203Allegheny County
Estimated valuepricier than$55,3433% of homesalmost no homes6% of homes
Price per ft²pricier than$6415% of homes4% of homes11% of homes
Living areabigger than864 ft²7% of homes4% of homes4% of homes
Lot sizebigger than2,300 ft²52% of homes71% of homes9% of homes
Year builtnewer than190572% of homes76% of homes12% of homes

About 21 Saint Thomas St

How much is 21 Saint Thomas St, Pittsburgh, PA worth?

The TopHap Estimate for 21 Saint Thomas St, Pittsburgh, PA is $55,343 as of Sep 24, 2026. The likely range is $46,143 to $64,543. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Saint Thomas St, Pittsburgh, PA last sell?

21 Saint Thomas St, Pittsburgh, PA last sold on Jan 26, 2011 for $2,400, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 21 Saint Thomas St, Pittsburgh, PA?

21 Saint Thomas St, Pittsburgh, PA has 2 bedrooms, 1 bathrooms, 864 square feet of living space and a 0.05-acre lot.

When was 21 Saint Thomas St, Pittsburgh, PA built?

21 Saint Thomas St, Pittsburgh, PA was built in 1905, making it 121 years old. The building has 2 stories.

What schools serve 21 Saint Thomas St, Pittsburgh, PA?

21 Saint Thomas St, Pittsburgh, PA is assigned to Pittsburgh Grandview Elementary School (elementary), rated C-; Pittsburgh South Hills Middle School (middle), rated C-; Carrick High School (high), rated D+. All sit in Pittsburgh School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Saint Thomas St, Pittsburgh, PA compare to other homes in Pittsburgh 15203?

Among the 4,213 homes in Pittsburgh 15203, it is worth more than almost none of them ($55,343 against a typical $195,531), its price per square foot is higher than 4% of them ($64 against a typical $135), it is bigger than 4% of them (864 ft² against a typical 1,535 ft²), its lot is bigger than 71% of them (2,300 ft² against a typical 1,481 ft²) and it is newer than 76% of them (1905 against a typical 1900). Measured against all of Allegheny County, it is worth more than 6% 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 Saint Thomas St, Pittsburgh, PA?

The 2026 property tax bill for 21 Saint Thomas St, Pittsburgh, PA was $151. The county assessed it at $23,500.

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