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Single Family ResidenceResidential
$304,750$215 / 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

4120 ROCK RUN RD

HAVRE DE GRACE, MD 21078
1
Baths
1,420 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.
1 ac
Lot SizeThe size of the land the home sits on, from county records.
1963
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$305K
$280K low$329K high
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.$304,750
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$243,800

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,552 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$242,933 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$230,267
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$255,600

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
CountyHarford
Lot (acres)The size of the land the home sits on, from county records.1.00
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Baseboard
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 144 ft²

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
Darlington Elementary SchoolA
Elementary · Grades PK–5 · 3.5 mi
M
Havre de Grace Middle SchoolB
Middle · Grades 6–8 · 4.8 mi
H
Havre de Grace High SchoolB
High · Grades 9–12 · 4.8 mi

District: Harford County Public Schools

Neighborhood · ZIP 21078These 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.115
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.86
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.60

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.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.5%
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.21,590
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.590 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$107,415
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$135,525
Average tempThe average temperature here across a full year.55°F
Annual precipHow much rain and melted snow falls here in a typical year.46 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
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

4120 Rock Run 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.

  • Worth less than 76% of homes in Harford County
  • Costs less per square foot than 72% of homes in Harford County
  • Smaller than 69% of homes in Havre de Grace 21078
  • Has a bigger lot than 87% of homes in Havre de Grace 21078
  • Older than 83% of homes in Harford County

What homes are worth in Havre de Grace 21078

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

This home
$144K$896K

This home is worth more than 25% of homes in Havre de Grace 21078.

How it measures up in Havre de Grace 21078

The dot is this home. The mark in the middle is the typical home in Havre de Grace 21078.

Estimated value$304,750
CheaperTypical $417,797Pricier

Pricier than 25% of homes nearby

Price per ft²$215
CheaperTypical $226Pricier

Pricier than 40% of homes nearby

Living area1,420 ft²
SmallerTypical 1,769 ft²Bigger

Bigger than 31% of homes nearby

Lot size1 ac
SmallerTypical 0.2 acBigger

Bigger than 87% of homes nearby

Year built1963
OlderTypical 1993Newer

Newer than 29% of homes nearby

How 4120 Rock Run Rd ranks against every home in each area.
MeasureThis homeHavre de Grace 21078Harford County
Estimated valuepricier than$304,75025% of homes24% of homes
Price per ft²pricier than$21540% of homes28% of homes
Living areabigger than1,420 ft²31% of homes37% of homes
Lot sizebigger than1 ac87% of homes80% of homes
Year builtnewer than196329% of homes17% of homes

About 4120 Rock Run Rd

How much is 4120 Rock Run Rd, Havre De Grace, MD worth?

The TopHap Estimate for 4120 Rock Run Rd, Havre De Grace, MD is $304,750 as of Jul 14, 2026. The likely range is $280,488 to $329,012. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 4120 Rock Run Rd, Havre De Grace, MD?

4120 Rock Run Rd, Havre De Grace, MD has 1 bathrooms, 1,420 square feet of living space and a 1.00-acre lot.

When was 4120 Rock Run Rd, Havre De Grace, MD built?

4120 Rock Run Rd, Havre De Grace, MD was built in 1963, making it 63 years old. It is a conventional home. The building has 1 story.

What schools serve 4120 Rock Run Rd, Havre De Grace, MD?

4120 Rock Run Rd, Havre De Grace, MD is assigned to Darlington Elementary School (elementary), rated A; Havre de Grace Middle School (middle), rated B; Havre de Grace High School (high), rated B. All sit in Harford County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4120 Rock Run Rd, Havre De Grace, MD compare to other homes in Havre de Grace 21078?

Among the 7,969 homes in Havre de Grace 21078, it is worth more than 25% of them ($304,750 against a typical $417,797), its price per square foot is higher than 40% of them ($215 against a typical $226), it is bigger than 31% of them (1,420 ft² against a typical 1,769 ft²), its lot is bigger than 87% of them (1 ac against a typical 0.2 ac) and it is newer than 29% of them (1963 against a typical 1993). Measured against all of Harford County, it is worth more than 24% 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 4120 Rock Run Rd, Havre De Grace, MD?

The 2025 property tax bill for 4120 Rock Run Rd, Havre De Grace, MD was $2,552. The county assessed it at $242,933.

More homes on Rock Run Rd

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More homes in Havre De Grace 21078

Assigned schools

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