Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$1,045,634$302 / 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 Aug 30, 2026
Last sold for $935,000 on Oct 4, 2023

670 RIVER RD

SYKESVILLE, MD 21784
3.5
Baths
3,458 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.
5.33 ac
Lot SizeThe size of the land the home sits on, from county records.
1978
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
5
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1M
$989K low$1.1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$935,000 · Oct 4, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,921 (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.$900,133 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$852,367
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$947,900

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.5.33
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.Mixed
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.StableShed · 288 ft²Patio · 216 ft²Porch · 847 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.

H
Marriotts Ridge High SchoolA+
High · Grades 9–12 · 2.1 mi
M
Mount View Middle SchoolA
Middle · Grades 6–8 · 2.1 mi
E
West Friendship Elementary SchoolA
Elementary · Grades KG–5 · 3.4 mi

District: Howard County Public Schools

Neighborhood · ZIP 21784These 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.66
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.83
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.38

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.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.7%
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.39,959
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.671 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$142,335
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$152,997
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%

Owner Tools

Do you own this home?
Claim this home

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

670 River Rd 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 97% of homes in Sykesville 21784
  • Bigger than 93% of homes in Sykesville 21784
  • Has a bigger lot than 97% of homes in Sykesville 21784
  • Older than 73% of homes in Howard County

What homes are worth in Sykesville 21784

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

This home
$254K$1.1M

This home is worth more than 97% of homes in Sykesville 21784.

How it measures up in Sykesville 21784

The dot is this home. The mark in the middle is the typical home in Sykesville 21784.

Estimated value$1,045,634
CheaperTypical $547,742Pricier

Pricier than 97% of homes nearby

Price per ft²$302
CheaperTypical $305Pricier

Pricier than 48% of homes nearby

Living area3,458 ft²
SmallerTypical 1,882 ft²Bigger

Bigger than 93% of homes nearby

Lot size5.33 ac
SmallerTypical 0.49 acBigger

Bigger than 97% of homes nearby

Year built1978
OlderTypical 1986Newer

Newer than 35% of homes nearby

How 670 River Rd ranks against every home in each area.
MeasureThis homeSykesville 21784Howard County
Estimated valuepricier than$1,045,63497% of homes89% of homes
Price per ft²pricier than$30248% of homes49% of homes
Living areabigger than3,458 ft²93% of homes88% of homes
Lot sizebigger than5.33 ac97% of homes95% of homes
Year builtnewer than197835% of homes27% of homes

About 670 River Rd

How much is 670 River Rd, Sykesville, MD worth?

The TopHap Estimate for 670 River Rd, Sykesville, MD is $1,045,634 as of Aug 30, 2026. The likely range is $989,477 to $1,101,791. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 670 River Rd, Sykesville, MD last sell?

670 River Rd, Sykesville, MD last sold on Oct 4, 2023 for $935,000, according to the county's recorded deed.

How big is 670 River Rd, Sykesville, MD?

670 River Rd, Sykesville, MD has 3.5 bathrooms, 3,458 square feet of living space and a 5.33-acre lot.

When was 670 River Rd, Sykesville, MD built?

670 River Rd, Sykesville, MD was built in 1978, making it 48 years old. The building has 2 stories.

What schools serve 670 River Rd, Sykesville, MD?

670 River Rd, Sykesville, MD is assigned to Marriotts Ridge High School (high), rated A+; Mount View Middle School (middle), rated A; West Friendship Elementary School (elementary), rated A. All sit in Howard County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 670 River Rd, Sykesville, MD compare to other homes in Sykesville 21784?

Among the 13,562 homes in Sykesville 21784, it is worth more than 97% of them ($1,045,634 against a typical $547,742), its price per square foot is higher than 48% of them ($302 against a typical $305), it is bigger than 93% of them (3,458 ft² against a typical 1,882 ft²), its lot is bigger than 97% of them (5.33 ac against a typical 0.49 ac) and it is newer than 35% of them (1978 against a typical 1986). Measured against all of Howard County, it is worth more than 89% 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 670 River Rd, Sykesville, MD?

The 2026 property tax bill for 670 River Rd, Sykesville, MD was $12,921. The county assessed it at $900,133.

More homes on River Rd

Closest homes

More homes in Sykesville 21784

Assigned schools

Explore the area

See this home in context

Open 670 River Rd on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map