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Single Family ResidenceResidential
$765,961$334 / 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 94How 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
Last sold for $130,000 on May 6, 2002

4312 RIVIERA SUN DR

ELLICOTT CITY, MD 21043
3.5
Baths
2,296 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.
2003
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

$766K
$723K low$809K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$130,000 · May 6, 2002

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,434 (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.$691,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$200,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$491,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$657,633
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$691,700

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyHOWARD
Lot (acres)The size of the land the home sits on, from county records.0.22
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
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 · 156 ft²Patio · 732 ft²Porch · 175 ft²

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
Worthington Elementary SchoolA+
Elementary · Grades PK–5 · 0.4 mi
M
Ellicott Mills Middle SchoolA
Middle · Grades 6–8 · 0.9 mi
H
Howard High SchoolB+
High · Grades 9–12 · 1.9 mi

District: Howard County Public Schools

Neighborhood · ZIP 21043These 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.86
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.85
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.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.8%
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.48,279
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,799 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$138,854
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$163,449
Average tempThe average temperature here across a full year.55°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

4312 Riviera Sun Dr 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 70% of homes in Ellicott City 21043
  • Costs more per square foot than 69% of homes in Howard County
  • Has a smaller lot than 65% of homes in Ellicott City 21043
  • Newer than 78% of homes in Howard County

What homes are worth in Ellicott City 21043

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

This home
$285K$1.1M

This home is worth more than 70% of homes in Ellicott City 21043.

How it measures up in Ellicott City 21043

The dot is this home. The mark in the middle is the typical home in Ellicott City 21043.

Estimated value$765,961
CheaperTypical $623,500Pricier

Pricier than 70% of homes nearby

Price per ft²$334
CheaperTypical $307Pricier

Pricier than 68% of homes nearby

Living area2,296 ft²
SmallerTypical 2,029 ft²Bigger

Bigger than 60% of homes nearby

Lot size0.22 ac
SmallerTypical 0.33 acBigger

Bigger than 35% of homes nearby

Year built2003
OlderTypical 1993Newer

Newer than 71% of homes nearby

How 4312 Riviera Sun Dr ranks against every home in each area.
MeasureThis homeEllicott City 21043Howard County
Estimated valuepricier than$765,96170% of homes68% of homes
Price per ft²pricier than$33468% of homes69% of homes
Living areabigger than2,296 ft²60% of homes60% of homes
Lot sizebigger than0.22 ac35% of homes36% of homes
Year builtnewer than200371% of homes78% of homes

About 4312 Riviera Sun Dr

How much is 4312 Riviera Sun Dr, Ellicott City, MD worth?

The TopHap Estimate for 4312 Riviera Sun Dr, Ellicott City, MD is $765,961 as of Oct 21, 2026. The likely range is $722,762 to $809,160. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4312 Riviera Sun Dr, Ellicott City, MD last sell?

4312 Riviera Sun Dr, Ellicott City, MD last sold on May 6, 2002 for $130,000, according to the county's recorded deed.

How big is 4312 Riviera Sun Dr, Ellicott City, MD?

4312 Riviera Sun Dr, Ellicott City, MD has 3.5 bathrooms, 2,296 square feet of living space and a 0.22-acre lot.

When was 4312 Riviera Sun Dr, Ellicott City, MD built?

4312 Riviera Sun Dr, Ellicott City, MD was built in 2003, making it 23 years old. The building has 2 stories.

What schools serve 4312 Riviera Sun Dr, Ellicott City, MD?

4312 Riviera Sun Dr, Ellicott City, MD is assigned to Worthington Elementary School (elementary), rated A+; Ellicott Mills Middle School (middle), rated A; Howard High School (high), rated B+. All sit in Howard County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4312 Riviera Sun Dr, Ellicott City, MD compare to other homes in Ellicott City 21043?

Among the 14,444 homes in Ellicott City 21043, it is worth more than 70% of them ($765,961 against a typical $623,500), its price per square foot is higher than 68% of them ($334 against a typical $307), it is bigger than 60% of them (2,296 ft² against a typical 2,029 ft²), its lot is bigger than 35% of them (0.22 ac against a typical 0.33 ac) and it is newer than 71% of them (2003 against a typical 1993). Measured against all of Howard County, it is worth more than 68% 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 4312 Riviera Sun Dr, Ellicott City, MD?

The 2026 property tax bill for 4312 Riviera Sun Dr, Ellicott City, MD was $10,434. The county assessed it at $691,700.

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