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Mobile HomeResidential
Last sold for $71,000 on May 4, 2026

421 E TWIN LN

SLIPPERY ROCK, PA 16057
3
Beds
1
Baths
1,848 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.
2.01 ac
Lot SizeThe size of the land the home sits on, from county records.
1994
Year BuiltThe year the home was originally built, according to county records.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$71,000 · May 4, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$517 (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.$15,400 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,620
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$13,780
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$15,400

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.38
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
6
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
66
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
83
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
36
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.Mobile Home
StyleThe architectural style of the home, such as ranch or colonial.Mobile Home
CountyBUTLER
Lot (acres)The size of the land the home sits on, from county records.2.01
ConstructionThe main material the home's frame and walls are built from.Log
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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
Dassa McKinney Elementary SchoolB+
Elementary · Grades KG–6 · 4.8 mi
M
Moniteau Jr. / Sr. High SchoolB+
Middle · Grades 7–12 · 5.2 mi

District: Moniteau School District

Neighborhood · ZIP 16057These 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.139
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 100.24

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.84%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.15%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.15%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.15,539
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.175 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$58,602
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$80,398
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.42 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.45%

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

421 E Twin Ln 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.

  • Bigger than 70% of homes in Slippery Rock 16057
  • Has a bigger lot than 80% of homes in Butler County
  • Newer than 71% of homes in Slippery Rock 16057

How it measures up in Slippery Rock 16057

The dot is this home. The mark in the middle is the typical home in Slippery Rock 16057.

Living area1,848 ft²
SmallerTypical 1,456 ft²Bigger

Bigger than 70% of homes nearby

Lot size2.01 ac
SmallerTypical 1.29 acBigger

Bigger than 62% of homes nearby

Year built1994
OlderTypical 1970Newer

Newer than 71% of homes nearby

How 421 E Twin Ln ranks against every home in each area.
MeasureThis homeSlippery Rock 16057Butler County
Living areabigger than1,848 ft²70% of homes59% of homes
Lot sizebigger than2.01 ac62% of homes80% of homes
Year builtnewer than199471% of homes61% of homes

About 421 E Twin Ln

When did 421 E Twin Ln, Slippery Rock, PA last sell?

421 E Twin Ln, Slippery Rock, PA last sold on May 4, 2026 for $71,000, according to the county's recorded deed.

How big is 421 E Twin Ln, Slippery Rock, PA?

421 E Twin Ln, Slippery Rock, PA has 3 bedrooms, 1 bathrooms, 1,848 square feet of living space and a 2.01-acre lot.

When was 421 E Twin Ln, Slippery Rock, PA built?

421 E Twin Ln, Slippery Rock, PA was built in 1994, making it 32 years old. It is a mobile home home.

What schools serve 421 E Twin Ln, Slippery Rock, PA?

421 E Twin Ln, Slippery Rock, PA is assigned to Dassa McKinney Elementary School (elementary), rated B+; Moniteau Jr. / Sr. High School (middle), rated B+. All sit in Moniteau School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 E Twin Ln, Slippery Rock, PA compare to other homes in Slippery Rock 16057?

Among the 4,009 homes in Slippery Rock 16057, it is bigger than 70% of them (1,848 ft² against a typical 1,456 ft²), its lot is bigger than 62% of them (2.01 ac against a typical 1.29 ac) and it is newer than 71% of them (1994 against a typical 1970). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 421 E Twin Ln, Slippery Rock, PA?

The 2026 property tax bill for 421 E Twin Ln, Slippery Rock, PA was $517. The county assessed it at $15,400.

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Assigned schools

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