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Single Family ResidenceResidential
$2,357,176$821 / 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 Jul 14, 2026
Last sold for $2,241,111 on Jan 13, 2025

166 RIVER PARK DR

GREAT FALLS, VA 22066
5
Beds
5.5
Baths
2,872 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 ac
Lot SizeThe size of the land the home sits on, from county records.
1991
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
11
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$2.4M
$2.2M low$2.5M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$2,241,111 · Jan 13, 2025
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$676,567
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$541,254
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.72%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$1,680,609
ATLANTIC UNION BANK · 7% 1 · recorded Jan 13, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$20,473 (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.$1,771,020 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$997,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$774,020
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,646,380
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,771,020

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.197 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.1 percent flood zone

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.5.00
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Central
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.Yes
ViewThe type of view from the property, or another feature of the site that affects value.Park Land
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 77 ft²Patio · 491 ft²Porch · 914 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
Great Falls Elementary SchoolA+
Elementary · Grades PK–6 · 2.5 mi
M
Cooper Middle SchoolA+
Middle · Grades 7–8 · 7.7 mi
H
Langley High SchoolA+
High · Grades 9–12 · 8.8 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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

166 River Park 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 98% of homes in Fairfax County
  • Costs more per square foot than 98% of homes in Fairfax County
  • Bigger than 83% of homes in Fairfax County
  • Among the largest lots in Fairfax County
  • Newer than 73% of homes in Fairfax County

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
$834K$4.4M

This home is worth more than 79% 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$2,357,176
CheaperTypical $1,718,613Pricier

Pricier than 79% of homes nearby

Price per ft²$821
CheaperTypical $486Pricier

Pricier than 97% of homes nearby

Living area2,872 ft²
SmallerTypical 3,590 ft²Bigger

Bigger than 35% of homes nearby

Lot size5 ac
SmallerTypical 1.18 acBigger

Bigger than 91% of homes nearby

Year built1991
OlderTypical 1986Newer

Newer than 65% of homes nearby

How 166 River Park Dr ranks against every home in each area.
MeasureThis homeGreat Falls 22066Fairfax County
Estimated valuepricier than$2,357,17679% of homes98% of homes
Price per ft²pricier than$82197% of homes98% of homes
Living areabigger than2,872 ft²35% of homes83% of homes
Lot sizebigger than5 ac91% of homesalmost all homes
Year builtnewer than199165% of homes73% of homes

About 166 River Park Dr

How much is 166 River Park Dr, Great Falls, VA worth?

The TopHap Estimate for 166 River Park Dr, Great Falls, VA is $2,357,176 as of Jul 14, 2026. The likely range is $2,226,331 to $2,488,022. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 166 River Park Dr, Great Falls, VA last sell?

166 River Park Dr, Great Falls, VA last sold on Jan 13, 2025 for $2,241,111, according to the county's recorded deed.

How big is 166 River Park Dr, Great Falls, VA?

166 River Park Dr, Great Falls, VA has 5 bedrooms, 5.5 bathrooms, 2,872 square feet of living space and a 5.00-acre lot.

When was 166 River Park Dr, Great Falls, VA built?

166 River Park Dr, Great Falls, VA was built in 1991, making it 35 years old. The building has 1 story.

What schools serve 166 River Park Dr, Great Falls, VA?

166 River Park Dr, 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 166 River Park Dr, Great Falls, VA compare to other homes in Great Falls 22066?

Among the 6,206 homes in Great Falls 22066, it is worth more than 79% of them ($2,357,176 against a typical $1,718,613), its price per square foot is higher than 97% of them ($821 against a typical $486), it is bigger than 35% of them (2,872 ft² against a typical 3,590 ft²), its lot is bigger than 91% of them (5 ac against a typical 1.18 ac) and it is newer than 65% of them (1991 against a typical 1986). Measured against all of Fairfax County, it is worth more than 98% 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 166 River Park Dr, Great Falls, VA?

The 2025 property tax bill for 166 River Park Dr, Great Falls, VA was $20,473. The county assessed it at $1,771,020.

Closest homes

More homes in Great Falls 22066

Assigned schools

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