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Single Family ResidenceResidential
$273,027$127 / 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 92How 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 $148,000 on Dec 17, 2009

121 MONROE ST

PROSPECT, PA 16052
3
Beds
1.5
Baths
2,148 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.
0.93 ac
Lot SizeThe size of the land the home sits on, from county records.
1952
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

$273K
$252K low$294K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$148,000 · Dec 17, 2009

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$680 (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.$16,020 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$15,120
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$16,020

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.39
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
7
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
67
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
86
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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountyBUTLER
Lot (acres)The size of the land the home sits on, from county records.0.93
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(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
Moraine Elementary SchoolA-
Elementary · Grades KG–5 · 0.2 mi
H
Slippery Rock Area High SchoolB+
High · Grades 9–12 · 10.3 mi
M
Slippery Rock Area Middle SchoolA-
Middle · Grades 6–8 · 10.5 mi

District: Slippery Rock Area School District

Neighborhood · ZIP 16052These 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.93
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.95
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.16%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.2,819
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.131 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$82,973
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$96,783
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.41 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

121 Monroe 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.

  • Costs less per square foot than 88% of homes in Prospect 16052
  • Bigger than 79% of homes in Prospect 16052
  • Has a smaller lot than 74% of homes in Prospect 16052
  • Older than 71% of homes in Butler County

What homes are worth in Prospect 16052

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

This home
$101K$631K

This home is worth more than 50% of homes in Prospect 16052.

How it measures up in Prospect 16052

The dot is this home. The mark in the middle is the typical home in Prospect 16052.

Estimated value$273,027
CheaperTypical $275,518Pricier

Pricier than 50% of homes nearby

Price per ft²$127
CheaperTypical $186Pricier

Pricier than 12% of homes nearby

Living area2,148 ft²
SmallerTypical 1,515 ft²Bigger

Bigger than 79% of homes nearby

Lot size0.93 ac
SmallerTypical 1.66 acBigger

Bigger than 26% of homes nearby

Year built1952
OlderTypical 1978Newer

Newer than 30% of homes nearby

How 121 Monroe St ranks against every home in each area.
MeasureThis homeProspect 16052Butler County
Estimated valuepricier than$273,02750% of homes40% of homes
Price per ft²pricier than$12712% of homes15% of homes
Living areabigger than2,148 ft²79% of homes70% of homes
Lot sizebigger than0.93 ac26% of homes62% of homes
Year builtnewer than195230% of homes29% of homes

About 121 Monroe St

How much is 121 Monroe St, Prospect, PA worth?

The TopHap Estimate for 121 Monroe St, Prospect, PA is $273,027 as of Sep 24, 2026. The likely range is $252,302 to $293,752. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 121 Monroe St, Prospect, PA last sell?

121 Monroe St, Prospect, PA last sold on Dec 17, 2009 for $148,000, according to the county's recorded deed.

How big is 121 Monroe St, Prospect, PA?

121 Monroe St, Prospect, PA has 3 bedrooms, 1.5 bathrooms, 2,148 square feet of living space and a 0.93-acre lot.

When was 121 Monroe St, Prospect, PA built?

121 Monroe St, Prospect, PA was built in 1952, making it 74 years old. It is a conventional home.

What schools serve 121 Monroe St, Prospect, PA?

121 Monroe St, Prospect, PA is assigned to Moraine Elementary School (elementary), rated A-; Slippery Rock Area High School (high), rated B+; Slippery Rock Area Middle School (middle), rated A-. All sit in Slippery Rock Area School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 121 Monroe St, Prospect, PA compare to other homes in Prospect 16052?

Among the 1,006 homes in Prospect 16052, it is worth more than 50% of them ($273,027 against a typical $275,518), its price per square foot is higher than 12% of them ($127 against a typical $186), it is bigger than 79% of them (2,148 ft² against a typical 1,515 ft²), its lot is bigger than 26% of them (0.93 ac against a typical 1.66 ac) and it is newer than 30% of them (1952 against a typical 1978). Measured against all of Butler County, it is worth more than 40% 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 121 Monroe St, Prospect, PA?

The 2026 property tax bill for 121 Monroe St, Prospect, PA was $680. The county assessed it at $16,020.

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