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Residential (General/Single)Residential
$310,916
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 76How 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

866 MASON AVE

DEALE, MD 20751
0
Baths
0.65 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$311K
$235K low$387K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,432 (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.$131,500 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$131,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$131,500

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.27
100
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
28
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.29 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.62%
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.Residential (General/Single)
CountyANNE ARUNDEL
Lot (acres)The size of the land the home sits on, from county records.0.65
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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
Deale Elementary SchoolA-
Elementary · Grades KG–5 · 0.5 mi
M
Southern Middle SchoolB-
Middle · Grades 6–8 · 4.8 mi
H
Southern High SchoolC+
High · Grades 9–12 · 7.6 mi

District: Anne Arundel County Public Schools

Neighborhood · ZIP 20751These 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.131
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.89
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.34

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.90%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.26%
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.0.8%
PopulationHow many people live in this area.2,741
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.426 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$124,854
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$151,205
Average tempThe average temperature here across a full year.57°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

866 Mason Ave 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 91% of homes in Anne Arundel County
  • Has a bigger lot than 84% of homes in Anne Arundel County

What homes are worth in Deale 20751

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

This home
$211K$1.3M

This home is worth more than 14% of homes in Deale 20751.

How it measures up in Deale 20751

The dot is this home. The mark in the middle is the typical home in Deale 20751.

Estimated value$310,916
CheaperTypical $488,462Pricier

Pricier than 14% of homes nearby

Lot size0.65 ac
SmallerTypical 0.28 acBigger

Bigger than 77% of homes nearby

How 866 Mason Ave ranks against every home in each area.
MeasureThis homeDeale 20751Anne Arundel County
Estimated valuepricier than$310,91614% of homes9% of homes
Lot sizebigger than0.65 ac77% of homes84% of homes

About 866 Mason Ave

How much is 866 Mason Ave, Deale, MD worth?

The TopHap Estimate for 866 Mason Ave, Deale, MD is $310,916 as of Sep 24, 2026. The likely range is $235,075 to $386,757. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 866 Mason Ave, Deale, MD last sell?

866 Mason Ave, Deale, MD last sold on Jan 1, 1900, according to the county's recorded deed.

What schools serve 866 Mason Ave, Deale, MD?

866 Mason Ave, Deale, MD is assigned to Deale Elementary School (elementary), rated A-; Southern Middle School (middle), rated B-; Southern High School (high), rated C+. All sit in Anne Arundel County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 866 Mason Ave, Deale, MD compare to other homes in Deale 20751?

Among the 1,153 homes in Deale 20751, it is worth more than 14% of them ($310,916 against a typical $488,462) and its lot is bigger than 77% of them (0.65 ac against a typical 0.28 ac). Measured against all of Anne Arundel County, it is worth more than 9% 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 866 Mason Ave, Deale, MD?

The 2025 property tax bill for 866 Mason Ave, Deale, MD was $1,432. The county assessed it at $131,500.

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