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Single Family ResidenceResidential
$283,532$210 / 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 Jul 14, 2026
Last sold for $179,900 on Nov 25, 2015

518 MERCER RD

SLIPPERY ROCK, PA 16057
5
Beds
1
Baths
1,352 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.
4.43 ac
Lot SizeThe size of the land the home sits on, from county records.
10
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$284K
$260K low$307K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$179,900 · Nov 25, 2015
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$141,493
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$113,194
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.54%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$133,039
THE HUNTINGTON NATIONAL BANK · recorded Aug 27, 2021
2nd MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$9,000
FIRST NATIONAL BANK OF PENNSYLVANIA

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$548 (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.$17,460 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,650
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$15,810
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$16,140
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$17,460

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.37
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.
64
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
80
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.4.43
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
Slippery Rock Area Elementary SchoolB+
Elementary · Grades KG–5 · 0.4 mi
M
Slippery Rock Area Middle SchoolB
Middle · Grades 6–8 · 1.8 mi
H
Slippery Rock Area High SchoolB+
High · Grades 9–12 · 1.8 mi

District: Slippery Rock Area 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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.No

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

518 Mercer Rd 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 more per square foot than 76% of homes in Slippery Rock 16057
  • Smaller than 66% of homes in Butler County
  • Has a bigger lot than 89% of homes in Butler County

What homes are worth in Slippery Rock 16057

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

This home
$77K$646K

This home is worth more than 63% 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.

Estimated value$283,532
CheaperTypical $242,010Pricier

Pricier than 63% of homes nearby

Price per ft²$210
CheaperTypical $172Pricier

Pricier than 76% of homes nearby

Living area1,352 ft²
SmallerTypical 1,458 ft²Bigger

Bigger than 42% of homes nearby

Lot size4.43 ac
SmallerTypical 1.29 acBigger

Bigger than 77% of homes nearby

How 518 Mercer Rd ranks against every home in each area.
MeasureThis homeSlippery Rock 16057Butler County
Estimated valuepricier than$283,53263% of homes42% of homes
Price per ft²pricier than$21076% of homes58% of homes
Living areabigger than1,352 ft²42% of homes34% of homes
Lot sizebigger than4.43 ac77% of homes89% of homes

About 518 Mercer Rd

How much is 518 Mercer Rd, Slippery Rock, PA worth?

The TopHap Estimate for 518 Mercer Rd, Slippery Rock, PA is $283,532 as of Jul 14, 2026. The likely range is $259,604 to $307,460. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 518 Mercer Rd, Slippery Rock, PA last sell?

518 Mercer Rd, Slippery Rock, PA last sold on Nov 25, 2015 for $179,900, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 518 Mercer Rd, Slippery Rock, PA?

518 Mercer Rd, Slippery Rock, PA has 5 bedrooms, 1 bathrooms, 1,352 square feet of living space and a 4.43-acre lot.

What schools serve 518 Mercer Rd, Slippery Rock, PA?

518 Mercer Rd, Slippery Rock, PA is assigned to Slippery Rock Area Elementary School (elementary), rated B+; Slippery Rock Area Middle School (middle), rated B; Slippery Rock Area High School (high), rated B+. All sit in Slippery Rock Area School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 518 Mercer Rd, Slippery Rock, PA compare to other homes in Slippery Rock 16057?

Among the 4,009 homes in Slippery Rock 16057, it is worth more than 63% of them ($283,532 against a typical $242,010), its price per square foot is higher than 76% of them ($210 against a typical $172), it is bigger than 42% of them (1,352 ft² against a typical 1,458 ft²) and its lot is bigger than 77% of them (4.43 ac against a typical 1.29 ac). Measured against all of Butler County, it is worth more than 42% 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 518 Mercer Rd, Slippery Rock, PA?

The 2026 property tax bill for 518 Mercer Rd, Slippery Rock, PA was $548. The county assessed it at $17,460.

Closest homes

More homes in Slippery Rock 16057

Assigned schools

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