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Single Family ResidenceResidential
$351,982$311 / 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 96How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026

15 SHAMROCK CIR

WESTMINSTER, MD 21157
1
Baths
1,132 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.
0.5 ac
Lot SizeThe size of the land the home sits on, from county records.
1976
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$352K
$339K low$365K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,196 (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.$313,867 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$293,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$354,600

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.7 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.minimal

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.Split Foyer
CountyCARROLL
Lot (acres)The size of the land the home sits on, from county records.0.51
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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.Deck · 240 ft²

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

H
Winters Mill High SchoolB+
High · Grades 9–12 · 3.6 mi
E
Cranberry Station Elementary SchoolB+
Elementary · Grades PK–5 · 3.7 mi
M
Westminster East Middle SchoolB+
Middle · Grades 6–8 · 4.3 mi

District: Carroll County Public Schools

Neighborhood · ZIP 21157These 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.105
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.80
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.46

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.96%
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.7.4%
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.41,419
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.542 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$105,034
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$121,439
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%

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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

15 Shamrock Cir 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 79% of homes in Carroll County
  • Costs more per square foot than 79% of homes in Westminster 21157
  • Smaller than 87% of homes in Carroll County
  • Older than 65% of homes in Carroll County

What homes are worth in Westminster 21157

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

This home
$212K$934K

This home is worth more than 26% of homes in Westminster 21157.

How it measures up in Westminster 21157

The dot is this home. The mark in the middle is the typical home in Westminster 21157.

Estimated value$351,982
CheaperTypical $445,930Pricier

Pricier than 26% of homes nearby

Price per ft²$311
CheaperTypical $260Pricier

Pricier than 79% of homes nearby

Living area1,132 ft²
SmallerTypical 1,728 ft²Bigger

Bigger than 14% of homes nearby

Lot size0.5 ac
SmallerTypical 0.61 acBigger

Bigger than 44% of homes nearby

Year built1976
OlderTypical 1979Newer

Newer than 43% of homes nearby

How 15 Shamrock Cir ranks against every home in each area.
MeasureThis homeWestminster 21157Carroll County
Estimated valuepricier than$351,98226% of homes21% of homes
Price per ft²pricier than$31179% of homes75% of homes
Living areabigger than1,132 ft²14% of homes13% of homes
Lot sizebigger than0.5 ac44% of homes45% of homes
Year builtnewer than197643% of homes35% of homes

About 15 Shamrock Cir

How much is 15 Shamrock Cir, Westminster, MD worth?

The TopHap Estimate for 15 Shamrock Cir, Westminster, MD is $351,982 as of Sep 24, 2026. The likely range is $338,769 to $365,195. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 15 Shamrock Cir, Westminster, MD last sell?

15 Shamrock Cir, Westminster, MD last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 15 Shamrock Cir, Westminster, MD?

15 Shamrock Cir, Westminster, MD has 1 bathrooms, 1,132 square feet of living space and a 0.51-acre lot.

When was 15 Shamrock Cir, Westminster, MD built?

15 Shamrock Cir, Westminster, MD was built in 1976, making it 50 years old. It is a split foyer home. The building has 2 stories.

What schools serve 15 Shamrock Cir, Westminster, MD?

15 Shamrock Cir, Westminster, MD is assigned to Winters Mill High School (high), rated B+; Cranberry Station Elementary School (elementary), rated B+; Westminster East Middle School (middle), rated B+. All sit in Carroll County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 15 Shamrock Cir, Westminster, MD compare to other homes in Westminster 21157?

Among the 12,564 homes in Westminster 21157, it is worth more than 26% of them ($351,982 against a typical $445,930), its price per square foot is higher than 79% of them ($311 against a typical $260), it is bigger than 14% of them (1,132 ft² against a typical 1,728 ft²), its lot is bigger than 44% of them (0.5 ac against a typical 0.61 ac) and it is newer than 43% of them (1976 against a typical 1979). Measured against all of Carroll County, it is worth more than 21% 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 15 Shamrock Cir, Westminster, MD?

The 2025 property tax bill for 15 Shamrock Cir, Westminster, MD was $3,196. The county assessed it at $313,867.

More homes on Shamrock Cir

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Assigned schools

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