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Single Family ResidenceResidential
$581,553$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
Last sold for $387,500 on Feb 26, 2018

455 MASON LN

ARNOLD, MD 21012
2.5
Baths
1,870 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.
0.22 ac
Lot SizeThe size of the land the home sits on, from county records.
1972
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$582K
$558K low$606K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$387,500 · Feb 26, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,300 (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.$459,567 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$438,533
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$480,600

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.25
100
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
16
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
9
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.68 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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Split Foyer
CountyANNE ARUNDEL
Lot (acres)The size of the land the home sits on, from county records.0.23
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 · 192 ft²Porch · 192 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
Belvedere Elementary SchoolA-
Elementary · Grades PK–5 · 0.5 mi
M
Severn River Middle SchoolA
Middle · Grades 6–8 · 0.8 mi
H
Broadneck High SchoolA-
High · Grades 9–12 · 3.1 mi

District: Anne Arundel County Public Schools

Neighborhood · ZIP 21012These 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.56
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.86
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.40

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.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.23,137
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,859 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$142,581
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$165,159
Average tempThe average temperature here across a full year.57°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

455 Mason 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.

  • Costs more per square foot than 69% of homes in Anne Arundel County
  • Older than 74% of homes in Arnold 21012

What homes are worth in Arnold 21012

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

This home
$283K$1.9M

This home is worth more than 43% of homes in Arnold 21012.

How it measures up in Arnold 21012

The dot is this home. The mark in the middle is the typical home in Arnold 21012.

Estimated value$581,553
CheaperTypical $619,105Pricier

Pricier than 43% of homes nearby

Price per ft²$311
CheaperTypical $301Pricier

Pricier than 57% of homes nearby

Living area1,870 ft²
SmallerTypical 2,004 ft²Bigger

Bigger than 44% of homes nearby

Lot size0.22 ac
SmallerTypical 0.26 acBigger

Bigger than 45% of homes nearby

Year built1972
OlderTypical 1981Newer

Newer than 26% of homes nearby

How 455 Mason Ln ranks against every home in each area.
MeasureThis homeArnold 21012Anne Arundel County
Estimated valuepricier than$581,55343% of homes63% of homes
Price per ft²pricier than$31157% of homes69% of homes
Living areabigger than1,870 ft²44% of homes51% of homes
Lot sizebigger than0.22 ac45% of homes56% of homes
Year builtnewer than197226% of homes35% of homes

About 455 Mason Ln

How much is 455 Mason Ln, Arnold, MD worth?

The TopHap Estimate for 455 Mason Ln, Arnold, MD is $581,553 as of Sep 24, 2026. The likely range is $557,600 to $605,506. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 455 Mason Ln, Arnold, MD last sell?

455 Mason Ln, Arnold, MD last sold on Feb 26, 2018 for $387,500, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 455 Mason Ln, Arnold, MD?

455 Mason Ln, Arnold, MD has 2.5 bathrooms, 1,870 square feet of living space and a 0.23-acre lot.

When was 455 Mason Ln, Arnold, MD built?

455 Mason Ln, Arnold, MD was built in 1972, making it 54 years old. It is a split foyer home. The building has 1 story.

What schools serve 455 Mason Ln, Arnold, MD?

455 Mason Ln, Arnold, MD is assigned to Belvedere Elementary School (elementary), rated A-; Severn River Middle School (middle), rated A; Broadneck High School (high), rated A-. All sit in Anne Arundel County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 455 Mason Ln, Arnold, MD compare to other homes in Arnold 21012?

Among the 8,545 homes in Arnold 21012, it is worth more than 43% of them ($581,553 against a typical $619,105), its price per square foot is higher than 57% of them ($311 against a typical $301), it is bigger than 44% of them (1,870 ft² against a typical 2,004 ft²), its lot is bigger than 45% of them (0.22 ac against a typical 0.26 ac) and it is newer than 26% of them (1972 against a typical 1981). Measured against all of Anne Arundel County, it is worth more than 63% 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 455 Mason Ln, Arnold, MD?

The 2025 property tax bill for 455 Mason Ln, Arnold, MD was $5,300. The county assessed it at $459,567.

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