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Single Family ResidenceResidential
$147,500$71 / 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 94How 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 $13,000 on Dec 21, 2016

420 WALNUT ST

MOUNT OLIVER, PA 15210
2
Beds
2
Baths
2,090 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.
3,643 ft²
Lot SizeThe size of the land the home sits on, from county records.
1942
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$148K
$139K low$156K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$13,000 · Dec 21, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$228 (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.$50,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$15,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$35,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$50,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$50,700

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.
4
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.0.08
ConstructionThe main material the home's frame and walls are built from.Brick
RoofThe main material covering the roof, such as asphalt shingle or tile.Slate
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(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.

E
Pittsburgh Arlington Elementary SchoolF
Elementary · Grades PK–8 · 0.6 mi
H
Carrick High SchoolD+
High · Grades 9–12 · 1.8 mi

District: Pittsburgh School District

Neighborhood · ZIP 15210These 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.148
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 100.29

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.84%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.20%
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.24,625
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,374 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$51,980
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$65,619
Average tempThe average temperature here across a full year.51°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

420 Walnut 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 more than 93% of homes in Mount Oliver Borough
  • Costs less per square foot than 88% of homes in Allegheny County
  • Bigger than 87% of homes in Pittsburgh 15210
  • Has a smaller lot than 77% of homes in Allegheny County
  • Newer than 91% of homes in Mount Oliver Borough

What homes are worth in Pittsburgh 15210

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

This home
$29K$218K

This home is worth more than 87% of homes in Pittsburgh 15210.

How it measures up in Pittsburgh 15210

The dot is this home. The mark in the middle is the typical home in Pittsburgh 15210.

Estimated value$147,500
CheaperTypical $81,555Pricier

Pricier than 87% of homes nearby

Price per ft²$71
CheaperTypical $59Pricier

Pricier than 62% of homes nearby

Living area2,090 ft²
SmallerTypical 1,426 ft²Bigger

Bigger than 87% of homes nearby

Lot size3,643 ft²
SmallerTypical 3,441 ft²Bigger

Bigger than 53% of homes nearby

Year built1942
OlderTypical 1919Newer

Newer than 84% of homes nearby

How 420 Walnut St ranks against every home in each area.
MeasureThis homeMount Oliver BoroughPittsburgh 15210Allegheny County
Estimated valuepricier than$147,50093% of homes87% of homes26% of homes
Price per ft²pricier than$7174% of homes62% of homes12% of homes
Living areabigger than2,090 ft²86% of homes87% of homes77% of homes
Lot sizebigger than3,643 ft²62% of homes53% of homes23% of homes
Year builtnewer than194291% of homes84% of homes40% of homes

About 420 Walnut St

How much is 420 Walnut St, Mount Oliver, PA worth?

The TopHap Estimate for 420 Walnut St, Mount Oliver, PA is $147,500 as of Sep 24, 2026. The likely range is $138,682 to $156,318. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 420 Walnut St, Mount Oliver, PA last sell?

420 Walnut St, Mount Oliver, PA last sold on Dec 21, 2016 for $13,000, according to the county's recorded deed.

How big is 420 Walnut St, Mount Oliver, PA?

420 Walnut St, Mount Oliver, PA has 2 bedrooms, 2 bathrooms, 2,090 square feet of living space and a 0.08-acre lot.

When was 420 Walnut St, Mount Oliver, PA built?

420 Walnut St, Mount Oliver, PA was built in 1942, making it 84 years old. The building has 2 stories.

What schools serve 420 Walnut St, Mount Oliver, PA?

420 Walnut St, Mount Oliver, PA is assigned to Pittsburgh Arlington Elementary School (elementary), rated F; 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 420 Walnut St, Mount Oliver, PA compare to other homes in Pittsburgh 15210?

Among the 10,157 homes in Pittsburgh 15210, it is worth more than 87% of them ($147,500 against a typical $81,555), its price per square foot is higher than 62% of them ($71 against a typical $59), it is bigger than 87% of them (2,090 ft² against a typical 1,426 ft²), its lot is bigger than 53% of them (3,643 ft² against a typical 3,441 ft²) and it is newer than 84% of them (1942 against a typical 1919). Measured against all of Allegheny 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 420 Walnut St, Mount Oliver, PA?

The 2026 property tax bill for 420 Walnut St, Mount Oliver, PA was $228. The county assessed it at $50,700.

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