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Rural ResidenceResidential
$1,163,362$251 / 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 89How 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 $525,000 on Jun 14, 2002

421 ROCK RUN PL

HAVRE DE GRACE, MD 21078
5
Baths
4,636 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.
14.49 ac
Lot SizeThe size of the land the home sits on, from county records.
1992
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.2M
$1M low$1.3M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$525,000 · Jun 14, 2002
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.$651,362
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$521,090
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.41%
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.$417,000
SWBC MORTGAGE CORP · recorded Jul 3, 2013
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.$95,000
EARL D & LOIS J TART

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,648 (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.$653,833 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$604,467
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$703,200

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Rural 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.14.49
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.Composition Shingle
HeatingThe type of heating system in the home.Heat Pump
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, Built-in
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.Deck · 475 ft²Patio · 348 ft²Porch · 100 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
Meadowvale Elementary SchoolB
Elementary · Grades PK–5 · 3.4 mi
M
Havre de Grace Middle SchoolB
Middle · Grades 6–8 · 4.5 mi
H
Havre de Grace High SchoolB
High · Grades 9–12 · 4.5 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

421 Rock Run Pl 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.

  • Among the most valuable homes in Havre de Grace 21078
  • Costs more per square foot than 65% of homes in Havre de Grace 21078
  • Among the largest homes in Havre de Grace 21078
  • Among the largest lots in Havre de Grace 21078

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$882K

This home is worth more than almost all 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$1,163,362
CheaperTypical $417,104Pricier

Pricier than almost all homes nearby

Price per ft²$251
CheaperTypical $227Pricier

Pricier than 65% of homes nearby

Living area4,636 ft²
SmallerTypical 1,776 ft²Bigger

Bigger than almost all homes nearby

Lot size14.49 ac
SmallerTypical 0.2 acBigger

Bigger than almost all homes nearby

Year built1992
OlderTypical 1992Newer

Newer than 50% of homes nearby

How 421 Rock Run Pl ranks against every home in each area.
MeasureThis homeHavre de Grace 21078Harford County
Estimated valuepricier than$1,163,362almost all homesalmost all homes
Price per ft²pricier than$25165% of homes59% of homes
Living areabigger than4,636 ft²almost all homesalmost all homes
Lot sizebigger than14.49 acalmost all homes98% of homes
Year builtnewer than199250% of homes60% of homes

About 421 Rock Run Pl

How much is 421 Rock Run Pl, Havre De Grace, MD worth?

The TopHap Estimate for 421 Rock Run Pl, Havre De Grace, MD is $1,163,362 as of Jul 14, 2026. The likely range is $1,038,244 to $1,288,480. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Rock Run Pl, Havre De Grace, MD last sell?

421 Rock Run Pl, Havre De Grace, MD last sold on Jun 14, 2002 for $525,000, according to the county's recorded deed.

How big is 421 Rock Run Pl, Havre De Grace, MD?

421 Rock Run Pl, Havre De Grace, MD has 5 bathrooms, 4,636 square feet of living space and a 14.49-acre lot.

When was 421 Rock Run Pl, Havre De Grace, MD built?

421 Rock Run Pl, Havre De Grace, MD was built in 1992, making it 34 years old. It is a conventional home. The building has 2 stories.

What schools serve 421 Rock Run Pl, Havre De Grace, MD?

421 Rock Run Pl, Havre De Grace, MD is assigned to Meadowvale Elementary School (elementary), rated B; 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 421 Rock Run Pl, 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 almost all of them ($1,163,362 against a typical $417,104), its price per square foot is higher than 65% of them ($251 against a typical $227), it is bigger than almost all of them (4,636 ft² against a typical 1,776 ft²), its lot is bigger than almost all of them (14.49 ac against a typical 0.2 ac) and it is newer than 50% of them (1992 against a typical 1992). Measured against all of Harford County, it is worth more than almost all 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 421 Rock Run Pl, Havre De Grace, MD?

The 2025 property tax bill for 421 Rock Run Pl, Havre De Grace, MD was $6,648. The county assessed it at $653,833.

More homes on Rock Run Pl

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Assigned schools

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