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TownhouseResidential
$397,097$225 / 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 95How 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 $265,000 on Apr 14, 2005

5818 ALDERLEAF PL

COLUMBIA, MD 21045
2.5
Baths
1,768 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.
2,439 ft²
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.
2
StoriesHow many floors the home has above ground.

Valuation

$397K
$377K low$417K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$265,000 · Apr 14, 2005

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,681 (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.$364,100 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$160,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$204,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$343,167
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$364,100

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Townhouse
StyleThe architectural style of the home, such as ranch or colonial.Townhouse
CountyHOWARD
Lot (acres)The size of the land the home sits on, from county records.0.06
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
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
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
Phelps Luck Elementary SchoolA-
Elementary · Grades PK–5 · 0.6 mi
H
Howard High SchoolA+
High · Grades 9–12 · 0.9 mi
M
Bonnie Branch Middle SchoolB+
Middle · Grades 6–8 · 2.8 mi

District: Howard County Public Schools

Neighborhood · ZIP 21045These 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.113
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 100.39

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.6%
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.40,881
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,128 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$115,208
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$141,105
Average tempThe average temperature here across a full year.54°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

5818 Alderleaf Pl 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 85% of homes in Howard County
  • Costs less per square foot than 94% of homes in Howard County
  • Has a smaller lot than 83% of homes in Howard County
  • Older than 83% of homes in Howard County

What homes are worth in Columbia 21045

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

This home
$190K$772K

This home is worth more than 27% of homes in Columbia 21045.

How it measures up in Columbia 21045

The dot is this home. The mark in the middle is the typical home in Columbia 21045.

Estimated value$397,097
CheaperTypical $477,337Pricier

Pricier than 27% of homes nearby

Price per ft²$225
CheaperTypical $289Pricier

Pricier than 7% of homes nearby

Living area1,768 ft²
SmallerTypical 1,548 ft²Bigger

Bigger than 63% of homes nearby

Lot size2,439 ft²
SmallerTypical 0.2 acBigger

Bigger than 29% of homes nearby

Year built1972
OlderTypical 1977Newer

Newer than 24% of homes nearby

How 5818 Alderleaf Pl ranks against every home in each area.
MeasureThis homeLong ReachColumbia 21045Howard County
Estimated valuepricier than$397,09735% of homes27% of homes15% of homes
Price per ft²pricier than$22512% of homes7% of homes6% of homes
Living areabigger than1,768 ft²62% of homes63% of homes39% of homes
Lot sizebigger than2,439 ft²34% of homes29% of homes17% of homes
Year builtnewer than197218% of homes24% of homes17% of homes

About 5818 Alderleaf Pl

How much is 5818 Alderleaf Pl, Columbia, MD worth?

The TopHap Estimate for 5818 Alderleaf Pl, Columbia, MD is $397,097 as of Sep 24, 2026. The likely range is $377,322 to $416,872. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 5818 Alderleaf Pl, Columbia, MD last sell?

5818 Alderleaf Pl, Columbia, MD last sold on Apr 14, 2005 for $265,000, according to the county's recorded deed.

How big is 5818 Alderleaf Pl, Columbia, MD?

5818 Alderleaf Pl, Columbia, MD has 2.5 bathrooms, 1,768 square feet of living space and a 0.06-acre lot.

When was 5818 Alderleaf Pl, Columbia, MD built?

5818 Alderleaf Pl, Columbia, MD was built in 1972, making it 54 years old. It is a townhouse home. The building has 2 stories.

What schools serve 5818 Alderleaf Pl, Columbia, MD?

5818 Alderleaf Pl, Columbia, MD is assigned to Phelps Luck Elementary School (elementary), rated A-; Howard High School (high), rated A+; Bonnie Branch Middle School (middle), rated B+. All sit in Howard County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 5818 Alderleaf Pl, Columbia, MD compare to other homes in Columbia 21045?

Among the 12,651 homes in Columbia 21045, it is worth more than 27% of them ($397,097 against a typical $477,337), its price per square foot is higher than 7% of them ($225 against a typical $289), it is bigger than 63% of them (1,768 ft² against a typical 1,548 ft²), its lot is bigger than 29% of them (2,439 ft² against a typical 0.2 ac) and it is newer than 24% of them (1972 against a typical 1977). Measured against all of Howard County, it is worth more than 15% 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 5818 Alderleaf Pl, Columbia, MD?

The 2026 property tax bill for 5818 Alderleaf Pl, Columbia, MD was $5,681. The county assessed it at $364,100.

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