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Single Family ResidenceResidential
$629,082$613 / 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 83How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026

21 CASTLE DOWN DR SE

HUNTSVILLE, AL 35802
3.5
Baths
1,026 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
2002
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
3
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$629K
$520K low$738K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,004 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$49,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$16,560
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$33,240
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$46,560
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$526,200

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.46
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
24
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
93
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
85
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
29
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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
CountyMADISON
Lot (acres)The size of the land the home sits on, from county records.0.10
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Mat/Raft Foundation (Slab)
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
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
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

E
Jones Valley Elementary SchoolA
Elementary · Grades PK–6 · 2.7 mi
H
Huntsville High SchoolB
High · Grades 9–12 · 4.8 mi
M
Huntsville Junior High SchoolC+
Middle · Grades 7–8 · 4.9 mi

District: Huntsville City School District

Neighborhood · ZIP 35802These 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.112
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.112
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.66

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.8%
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.25,371
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,111 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$83,311
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$109,228
Average tempThe average temperature here across a full year.60°F
Annual precipHow much rain and melted snow falls here in a typical year.57 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

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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

21 Castle Down Dr Se 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 93% of homes in Madison County
  • Among the highest price per square foot in Madison County
  • Smaller than 92% of homes in Huntsville 35802
  • Has a smaller lot than 97% of homes in Madison County
  • Newer than 90% of homes in Huntsville 35802

What homes are worth in Huntsville 35802

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

This home
$90K$1.2M

This home is worth more than 88% of homes in Huntsville 35802.

How it measures up in Huntsville 35802

The dot is this home. The mark in the middle is the typical home in Huntsville 35802.

Estimated value$629,082
CheaperTypical $366,568Pricier

Pricier than 88% of homes nearby

Price per ft²$613
CheaperTypical $197Pricier

Pricier than almost all homes nearby

Living area1,026 ft²
SmallerTypical 1,847 ft²Bigger

Bigger than 8% of homes nearby

Lot size0.11 ac
SmallerTypical 0.4 acBigger

Bigger than 13% of homes nearby

Year built2002
OlderTypical 1970Newer

Newer than 90% of homes nearby

How 21 Castle Down Dr Se ranks against every home in each area.
MeasureThis homeHuntsville 35802Madison County
Estimated valuepricier than$629,08288% of homes93% of homes
Price per ft²pricier than$613almost all homesalmost all homes
Living areabigger than1,026 ft²8% of homes10% of homes
Lot sizebigger than0.11 ac13% of homes3% of homes
Year builtnewer than200290% of homes63% of homes

About 21 Castle Down Dr Se

How much is 21 Castle Down Dr Se, Huntsville, AL worth?

The TopHap Estimate for 21 Castle Down Dr Se, Huntsville, AL is $629,082 as of Oct 21, 2026. The likely range is $519,700 to $738,464. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Castle Down Dr Se, Huntsville, AL last sell?

21 Castle Down Dr Se, Huntsville, AL last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Castle Down Dr Se, Huntsville, AL?

21 Castle Down Dr Se, Huntsville, AL has 3.5 bathrooms, 1,026 square feet of living space and a 0.10-acre lot.

When was 21 Castle Down Dr Se, Huntsville, AL built?

21 Castle Down Dr Se, Huntsville, AL was built in 2002, making it 24 years old. The building has 1 story.

What schools serve 21 Castle Down Dr Se, Huntsville, AL?

21 Castle Down Dr Se, Huntsville, AL is assigned to Jones Valley Elementary School (elementary), rated A; Huntsville High School (high), rated B; Huntsville Junior High School (middle), rated C+. All sit in Huntsville City School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Castle Down Dr Se, Huntsville, AL compare to other homes in Huntsville 35802?

Among the 7,518 homes in Huntsville 35802, it is worth more than 88% of them ($629,082 against a typical $366,568), its price per square foot is higher than almost all of them ($613 against a typical $197), it is bigger than 8% of them (1,026 ft² against a typical 1,847 ft²), its lot is bigger than 13% of them (0.11 ac against a typical 0.4 ac) and it is newer than 90% of them (2002 against a typical 1970). Measured against all of Madison County, it is worth more than 93% 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 21 Castle Down Dr Se, Huntsville, AL?

The 2026 property tax bill for 21 Castle Down Dr Se, Huntsville, AL was $3,004. The county assessed it at $49,800.

More homes on Castle Down Dr Se

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