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Single Family ResidenceResidential
$666,303$186 / 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 97How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $505,000 on Apr 30, 2021

3909 THRASHER CT

MONROVIA, MD 21770
3.5
Baths
3,590 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.
2.58 ac
Lot SizeThe size of the land the home sits on, from county records.
1987
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$666K
$648K low$685K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$505,000 · Apr 30, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,485 (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.$542,700 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$518,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$566,800

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.59
76
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
17
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
77
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
91
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
37
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.56 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

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
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.Heat Pump
CoolingThe type of cooling or air conditioning in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
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 · 160 ft²

Transaction History(3)

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
Green Valley Elementary SchoolA+
Elementary · Grades KG–5 · 1.6 mi
M
Windsor Knolls Middle SchoolA-
Middle · Grades 6–8 · 2.6 mi
H
Linganore High SchoolB
High · Grades 9–12 · 6.2 mi

District: Frederick County Public Schools

Neighborhood · ZIP 21770These 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.22
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.79
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.37

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.98%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.1.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.6,240
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.567 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$161,575
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$180,267
Average tempThe average temperature here across a full year.54°F
Annual precipHow much rain and melted snow falls here in a typical year.45 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%

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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

3909 Thrasher Ct 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 more than 78% of homes in Frederick County
  • Costs less per square foot than 97% of homes in Monrovia 21770
  • Bigger than 86% of homes in Frederick County
  • Has a bigger lot than 91% of homes in Monrovia 21770

What homes are worth in Monrovia 21770

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

This home
$372K$1.1M

This home is worth more than 53% of homes in Monrovia 21770.

How it measures up in Monrovia 21770

The dot is this home. The mark in the middle is the typical home in Monrovia 21770.

Estimated value$666,303
CheaperTypical $641,581Pricier

Pricier than 53% of homes nearby

Price per ft²$186
CheaperTypical $242Pricier

Pricier than 3% of homes nearby

Living area3,590 ft²
SmallerTypical 2,675 ft²Bigger

Bigger than 73% of homes nearby

Lot size2.58 ac
SmallerTypical 0.73 acBigger

Bigger than 91% of homes nearby

Year built1987
OlderTypical 1992Newer

Newer than 42% of homes nearby

How 3909 Thrasher Ct ranks against every home in each area.
MeasureThis homeMonrovia 21770Frederick County
Estimated valuepricier than$666,30353% of homes78% of homes
Price per ft²pricier than$1863% of homes15% of homes
Living areabigger than3,590 ft²73% of homes86% of homes
Lot sizebigger than2.58 ac91% of homes90% of homes
Year builtnewer than198742% of homes43% of homes

About 3909 Thrasher Ct

How much is 3909 Thrasher Ct, Monrovia, MD worth?

The TopHap Estimate for 3909 Thrasher Ct, Monrovia, MD is $666,303 as of Aug 30, 2026. The likely range is $647,560 to $685,046. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3909 Thrasher Ct, Monrovia, MD last sell?

3909 Thrasher Ct, Monrovia, MD last sold on Apr 30, 2021 for $505,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 3909 Thrasher Ct, Monrovia, MD?

3909 Thrasher Ct, Monrovia, MD has 3.5 bathrooms and 3,590 square feet of living space.

When was 3909 Thrasher Ct, Monrovia, MD built?

3909 Thrasher Ct, Monrovia, MD was built in 1987, making it 39 years old. It is a conventional home. The building has 1 story.

What schools serve 3909 Thrasher Ct, Monrovia, MD?

3909 Thrasher Ct, Monrovia, MD is assigned to Green Valley Elementary School (elementary), rated A+; Windsor Knolls Middle School (middle), rated A-; Linganore High School (high), rated B. All sit in Frederick County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3909 Thrasher Ct, Monrovia, MD compare to other homes in Monrovia 21770?

Among the 2,965 homes in Monrovia 21770, it is worth more than 53% of them ($666,303 against a typical $641,581), its price per square foot is higher than 3% of them ($186 against a typical $242), it is bigger than 73% of them (3,590 ft² against a typical 2,675 ft²), its lot is bigger than 91% of them (2.58 ac against a typical 0.73 ac) and it is newer than 42% of them (1987 against a typical 1992). Measured against all of Frederick County, it is worth more than 78% 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 3909 Thrasher Ct, Monrovia, MD?

The 2025 property tax bill for 3909 Thrasher Ct, Monrovia, MD was $6,485. The county assessed it at $542,700.

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