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Single Family ResidenceResidential
$577,362$227 / 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 Aug 30, 2026
Last sold for $383,300 on Jun 21, 2019

310 AVALON LN

WESTMINSTER, MD 21158
3 / 2
Baths
2,544 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.
0.63 ac
Lot SizeThe size of the land the home sits on, from county records.
1984
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

$577K
$554K low$601K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$383,300 · Jun 21, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,168 (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.$509,300 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$120,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$388,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$466,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$509,300

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
83
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
14
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.
88
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.79 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.34%
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.0.2 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.Single Family Residence
CountyCARROLL
Lot (acres)The size of the land the home sits on, from county records.0.63
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
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 · 288 ft²Porch · 600 ft²

Transaction History(4)

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
Friendship Valley Elementary SchoolB-
Elementary · Grades PK–5 · 2.1 mi
M
Westminster West Middle SchoolB+
Middle · Grades 6–8 · 2.5 mi
H
Westminster High SchoolA-
High · Grades 9–12 · 2.8 mi

District: Carroll County Public Schools

Neighborhood · ZIP 21158These 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.74
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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.25%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.5%
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.21,498
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.288 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$112,468
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$135,145
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.43 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%

Owner Tools

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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

310 Avalon Ln 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 76% of homes in Westminster 21158
  • Costs less per square foot than 79% of homes in Carroll County
  • Bigger than 80% of homes in Westminster 21158

What homes are worth in Westminster 21158

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

This home
$261K$895K

This home is worth more than 76% of homes in Westminster 21158.

How it measures up in Westminster 21158

The dot is this home. The mark in the middle is the typical home in Westminster 21158.

Estimated value$577,362
CheaperTypical $458,824Pricier

Pricier than 76% of homes nearby

Price per ft²$227
CheaperTypical $256Pricier

Pricier than 23% of homes nearby

Living area2,544 ft²
SmallerTypical 1,760 ft²Bigger

Bigger than 80% of homes nearby

Lot size0.63 ac
SmallerTypical 0.79 acBigger

Bigger than 47% of homes nearby

Year built1984
OlderTypical 1987Newer

Newer than 40% of homes nearby

How 310 Avalon Ln ranks against every home in each area.
MeasureThis homeWestminster 21158Carroll County
Estimated valuepricier than$577,36276% of homes69% of homes
Price per ft²pricier than$22723% of homes21% of homes
Living areabigger than2,544 ft²80% of homes79% of homes
Lot sizebigger than0.63 ac47% of homes50% of homes
Year builtnewer than198440% of homes49% of homes

About 310 Avalon Ln

How much is 310 Avalon Ln, Westminster, MD worth?

The TopHap Estimate for 310 Avalon Ln, Westminster, MD is $577,362 as of Aug 30, 2026. The likely range is $553,902 to $600,822. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 310 Avalon Ln, Westminster, MD last sell?

310 Avalon Ln, Westminster, MD last sold on Jun 21, 2019 for $383,300, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 310 Avalon Ln, Westminster, MD?

310 Avalon Ln, Westminster, MD has 3 bathrooms, 2,544 square feet of living space and a 0.63-acre lot.

When was 310 Avalon Ln, Westminster, MD built?

310 Avalon Ln, Westminster, MD was built in 1984, making it 42 years old. The building has 2 stories.

What schools serve 310 Avalon Ln, Westminster, MD?

310 Avalon Ln, Westminster, MD is assigned to Friendship Valley Elementary School (elementary), rated B-; Westminster West Middle School (middle), rated B+; Westminster High School (high), rated A-. All sit in Carroll County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 310 Avalon Ln, Westminster, MD compare to other homes in Westminster 21158?

Among the 7,111 homes in Westminster 21158, it is worth more than 76% of them ($577,362 against a typical $458,824), its price per square foot is higher than 23% of them ($227 against a typical $256), it is bigger than 80% of them (2,544 ft² against a typical 1,760 ft²), its lot is bigger than 47% of them (0.63 ac against a typical 0.79 ac) and it is newer than 40% of them (1984 against a typical 1987). Measured against all of Carroll County, it is worth more than 69% 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 310 Avalon Ln, Westminster, MD?

The 2025 property tax bill for 310 Avalon Ln, Westminster, MD was $7,168. The county assessed it at $509,300.

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