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Single Family ResidenceResidential
$1,926,169$858 / 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 89How 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

644 RIVER BEND RD

GREAT FALLS, VA 22066
4
Beds
4 / 1
Baths
2,244 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.
45.22 ac
Lot SizeThe size of the land the home sits on, from county records.
1961
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$1.9M
$1.7M low$2.1M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,793 (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.$1,106,660 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$882,980
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$223,680
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,066,650
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,106,660

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.10 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.minimal

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
CountyFairfax
Lot (acres)The size of the land the home sits on, from county records.45.22
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
HeatingThe type of heating system in the home.Heat Pump
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Tennis courtShed · 320 ft²Porch · 414 ft²

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

E
Great Falls Elementary SchoolA+
Elementary · Grades PK–6 · 1.7 mi
M
Cooper Middle SchoolA+
Middle · Grades 7–8 · 4.6 mi
H
Langley High SchoolA+
High · Grades 9–12 · 5.9 mi

District: Fairfax County Public Schools

Neighborhood · ZIP 22066These 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.45
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.80
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.35

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.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.1.9%
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.18,712
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.706 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$238,115
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$308,878
Average tempThe average temperature here across a full year.55°F
Annual precipHow much rain and melted snow falls here in a typical year.42 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.63%

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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

644 River Bend 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 96% of homes in Fairfax County
  • Costs more per square foot than 98% of homes in Great Falls 22066
  • Smaller than 84% of homes in Great Falls 22066
  • Among the largest lots in Great Falls 22066
  • Older than 95% of homes in Great Falls 22066

What homes are worth in Great Falls 22066

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

This home
$833K$4.5M

This home is worth more than 62% of homes in Great Falls 22066.

How it measures up in Great Falls 22066

The dot is this home. The mark in the middle is the typical home in Great Falls 22066.

Estimated value$1,926,169
CheaperTypical $1,708,518Pricier

Pricier than 62% of homes nearby

Price per ft²$858
CheaperTypical $484Pricier

Pricier than 98% of homes nearby

Living area2,244 ft²
SmallerTypical 3,596 ft²Bigger

Bigger than 16% of homes nearby

Lot size45.22 ac
SmallerTypical 1.21 acBigger

Bigger than almost all homes nearby

Year built1961
OlderTypical 1985Newer

Newer than 5% of homes nearby

How 644 River Bend Rd ranks against every home in each area.
MeasureThis homeGreat Falls 22066Fairfax County
Estimated valuepricier than$1,926,16962% of homes96% of homes
Price per ft²pricier than$85898% of homes98% of homes
Living areabigger than2,244 ft²16% of homes72% of homes
Lot sizebigger than45.22 acalmost all homesalmost all homes
Year builtnewer than19615% of homes14% of homes

About 644 River Bend Rd

How much is 644 River Bend Rd, Great Falls, VA worth?

The TopHap Estimate for 644 River Bend Rd, Great Falls, VA is $1,926,169 as of Sep 24, 2026. The likely range is $1,723,742 to $2,128,596. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 644 River Bend Rd, Great Falls, VA last sell?

644 River Bend Rd, Great Falls, VA last sold on Jan 27, 2021, according to the county's recorded deed.

How big is 644 River Bend Rd, Great Falls, VA?

644 River Bend Rd, Great Falls, VA has 4 bedrooms, 4 bathrooms, 2,244 square feet of living space and a 45.22-acre lot.

When was 644 River Bend Rd, Great Falls, VA built?

644 River Bend Rd, Great Falls, VA was built in 1961, making it 65 years old. The building has 2 stories.

What schools serve 644 River Bend Rd, Great Falls, VA?

644 River Bend Rd, Great Falls, VA is assigned to Great Falls Elementary School (elementary), rated A+; Cooper Middle School (middle), rated A+; Langley High School (high), rated A+. All sit in Fairfax County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 644 River Bend Rd, Great Falls, VA compare to other homes in Great Falls 22066?

Among the 6,208 homes in Great Falls 22066, it is worth more than 62% of them ($1,926,169 against a typical $1,708,518), its price per square foot is higher than 98% of them ($858 against a typical $484), it is bigger than 16% of them (2,244 ft² against a typical 3,596 ft²), its lot is bigger than almost all of them (45.22 ac against a typical 1.21 ac) and it is newer than 5% of them (1961 against a typical 1985). Measured against all of Fairfax County, it is worth more than 96% 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 644 River Bend Rd, Great Falls, VA?

The 2025 property tax bill for 644 River Bend Rd, Great Falls, VA was $12,793. The county assessed it at $1,106,660.

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