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Single Family ResidenceResidential
$400,949$364 / 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

1142 ROSEMONT DR

KNOXVILLE, MD 21758
1
Baths
1,100 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.
0.77 ac
Lot SizeThe size of the land the home sits on, from county records.
1966
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$401K
$355K low$447K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,302 (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.$277,933 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$258,067
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$297,800

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.42
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
15
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
79
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.
34
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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
CountyFREDERICK
Lot (acres)The size of the land the home sits on, from county records.0.77
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Electric
FireplaceWhether the home has a fireplace, and what kind.Yes
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.Patio · 320 ft²Porch · 378 ft²

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Brunswick Elementary SchoolA-
Elementary · Grades KG–5 · 1.0 mi
H
Brunswick High SchoolB
High · Grades 9–12 · 1.6 mi
M
Brunswick Middle SchoolB-
Middle · Grades 6–8 · 1.8 mi

District: Frederick County Public Schools

Neighborhood · ZIP 21758These 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.97
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.78
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.44

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.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.6,484
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.183 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$113,559
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$131,591
Average tempThe average temperature here across a full year.54°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.57%

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

1142 Rosemont Dr 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 71% of homes in Frederick County
  • Costs more per square foot than 97% of homes in Frederick County
  • Smaller than 95% of homes in Frederick County
  • Has a bigger lot than 75% of homes in Frederick County
  • Older than 79% of homes in Frederick County

What homes are worth in Knoxville 21758

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

This home
$182K$999K

This home is worth more than 35% of homes in Knoxville 21758.

How it measures up in Knoxville 21758

The dot is this home. The mark in the middle is the typical home in Knoxville 21758.

Estimated value$400,949
CheaperTypical $464,442Pricier

Pricier than 35% of homes nearby

Price per ft²$364
CheaperTypical $230Pricier

Pricier than 95% of homes nearby

Living area1,100 ft²
SmallerTypical 1,918 ft²Bigger

Bigger than 9% of homes nearby

Lot size0.77 ac
SmallerTypical 1.03 acBigger

Bigger than 41% of homes nearby

Year built1966
OlderTypical 1978Newer

Newer than 40% of homes nearby

How 1142 Rosemont Dr ranks against every home in each area.
MeasureThis homeKnoxville 21758Frederick County
Estimated valuepricier than$400,94935% of homes29% of homes
Price per ft²pricier than$36495% of homes97% of homes
Living areabigger than1,100 ft²9% of homes5% of homes
Lot sizebigger than0.77 ac41% of homes75% of homes
Year builtnewer than196640% of homes21% of homes

About 1142 Rosemont Dr

How much is 1142 Rosemont Dr, Knoxville, MD worth?

The TopHap Estimate for 1142 Rosemont Dr, Knoxville, MD is $400,949 as of Jul 14, 2026. The likely range is $355,305 to $446,593. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1142 Rosemont Dr, Knoxville, MD last sell?

1142 Rosemont Dr, Knoxville, MD last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 1142 Rosemont Dr, Knoxville, MD?

1142 Rosemont Dr, Knoxville, MD has 1 bathrooms, 1,100 square feet of living space and a 0.77-acre lot.

When was 1142 Rosemont Dr, Knoxville, MD built?

1142 Rosemont Dr, Knoxville, MD was built in 1966, making it 60 years old. It is a conventional home. The building has 1 story.

What schools serve 1142 Rosemont Dr, Knoxville, MD?

1142 Rosemont Dr, Knoxville, MD is assigned to Brunswick Elementary School (elementary), rated A-; Brunswick High School (high), rated B; Brunswick Middle School (middle), rated B-. All sit in Frederick County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1142 Rosemont Dr, Knoxville, MD compare to other homes in Knoxville 21758?

Among the 1,882 homes in Knoxville 21758, it is worth more than 35% of them ($400,949 against a typical $464,442), its price per square foot is higher than 95% of them ($364 against a typical $230), it is bigger than 9% of them (1,100 ft² against a typical 1,918 ft²), its lot is bigger than 41% of them (0.77 ac against a typical 1.03 ac) and it is newer than 40% of them (1966 against a typical 1978). Measured against all of Frederick County, it is worth more than 29% 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 1142 Rosemont Dr, Knoxville, MD?

The 2025 property tax bill for 1142 Rosemont Dr, Knoxville, MD was $3,302. The county assessed it at $277,933.

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Assigned schools

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