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Rural ResidenceResidential
Last sold for $1,250,000 on Nov 4, 2021

9121 LONGS MILL RD

ROCKY RIDGE, MD 21778
2
Baths
2,370 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.
196.93 ac
Lot SizeThe size of the land the home sits on, from county records.
1890
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,250,000 · Nov 4, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,324 (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.$402,900 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$369,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$435,900

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.62
100
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
12
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.
86
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.197 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.1 percent flood zone

Scores 0–100; higher = greater projected risk.

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
CountyFrederick
Lot (acres)The size of the land the home sits on, from county records.196.93
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
HeatingThe type of heating system in the home.Radiant
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 · 166 ft²Porch · 831 ft²

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
Thurmont Primary School
Elementary · Grades KG–2 · 3.5 mi
M
Thurmont Middle SchoolC-
Middle · Grades 6–8 · 4.3 mi
H
Catoctin High SchoolB-
High · Grades 9–12 · 5.4 mi

District: Frederick County Public Schools

Neighborhood · ZIP 21778These 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.106
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.77
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.39

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.11%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.9%
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.1,439
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.80 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$81,802
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$112,057
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.44 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.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.Yes

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

9121 Longs Mill 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.

  • Bigger than 73% of homes in Rocky Ridge 21778
  • Among the largest lots in Frederick County
  • Older than 97% of homes in Frederick County

How it measures up in Rocky Ridge 21778

The dot is this home. The mark in the middle is the typical home in Rocky Ridge 21778.

Living area2,370 ft²
SmallerTypical 1,729 ft²Bigger

Bigger than 73% of homes nearby

Lot size196.93 ac
SmallerTypical 3 acBigger

Bigger than almost all homes nearby

Year built1890
OlderTypical 1961Newer

Newer than 7% of homes nearby

How 9121 Longs Mill Rd ranks against every home in each area.
MeasureThis homeRocky Ridge 21778Frederick County
Living areabigger than2,370 ft²73% of homes57% of homes
Lot sizebigger than196.93 acalmost all homesalmost all homes
Year builtnewer than18907% of homes3% of homes

About 9121 Longs Mill Rd

When did 9121 Longs Mill Rd, Rocky Ridge, MD last sell?

9121 Longs Mill Rd, Rocky Ridge, MD last sold on Nov 4, 2021 for $1,250,000, according to the county's recorded deed.

How big is 9121 Longs Mill Rd, Rocky Ridge, MD?

9121 Longs Mill Rd, Rocky Ridge, MD has 2 bathrooms, 2,370 square feet of living space and a 196.93-acre lot.

When was 9121 Longs Mill Rd, Rocky Ridge, MD built?

9121 Longs Mill Rd, Rocky Ridge, MD was built in 1890, making it 136 years old. It is a conventional home. The building has 2 stories.

What schools serve 9121 Longs Mill Rd, Rocky Ridge, MD?

9121 Longs Mill Rd, Rocky Ridge, MD is assigned to Thurmont Primary School (elementary); Thurmont Middle School (middle), rated C-; Catoctin 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 9121 Longs Mill Rd, Rocky Ridge, MD compare to other homes in Rocky Ridge 21778?

Among the 437 homes in Rocky Ridge 21778, it is bigger than 73% of them (2,370 ft² against a typical 1,729 ft²), its lot is bigger than almost all of them (196.93 ac against a typical 3 ac) and it is newer than 7% of them (1890 against a typical 1961). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 9121 Longs Mill Rd, Rocky Ridge, MD?

The 2025 property tax bill for 9121 Longs Mill Rd, Rocky Ridge, MD was $4,324. The county assessed it at $402,900.

Closest homes

More homes in Rocky Ridge 21778

Assigned schools

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