CondominiumResidential
11709 Karbon Hill Ct
RESTON, VA 20191
1986
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
Built 19866 floors11 units1,136–1,430 ft²
$4.6M
All units combinedThe sum of our current value estimates for every unit in the building — roughly what the whole building's homes are worth together.
$424K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$334
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.
-13.7%vs the Reston ZIP median sale $/ft² ($387)
Sales Performance
$399K
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
-4.9%
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
2
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
18.2%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+1.7%per yeartypical hold 5.4 yrsfrom 10 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
20042005200920112018202020252026
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
20042005200920112018202020252026
20 arms-length sales on record for this building.
Unit Mix & Floor PlansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
Every unit: size vs estimated valueEvery unit in the building as one dot: across is its size, up is our current value estimate, and color is its bedroom count. Vertical columns of dots are recurring floor plans; the height spread within a column shows how much floor, view and condition move prices for the same layout.
2 bd
2 bed
11 units$424K · $334/ft²
Recurring floor plansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
2 bd · 2 ba · 1,208 ft²
4 units$415K · $343/ft²
2 bd · 2 ba · 1,136 ft²
3 units$400K · $352/ft²
2 bd · 2 ba · 1,358 ft²
2 units$397K · $292/ft²
2 bd · 2 ba · 1,430 ft²
2 units$439K · $307/ft²
Value DistributionHow the building's units spread across value ranges by our current estimates. A wide spread usually means big differences in size, floor or view.
$361K–$361K
1 unit
$380K–$380K
1 unit
$388K–$388K
1 unit
$400K–$406K
2 units
$424K–$424K
1 unit
$432K–$440K
3 units
$449K–$452K
2 units
Ownership & Financing
Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.73%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.9%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.7.3 yrs
Cash purchases (5 yrs)The share of purchases in the last 5 years with no mortgage recorded. High cash share is common in second-home and investor buildings.50%
Avg. loan-to-valueAverage current loan balance against unit value across the building. Low numbers mean owners hold lots of equity — a sign of financial stability.43%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$418,511
Median tax billThe middle annual property tax bill among the building's units.$4,737
Pre-foreclosure noticesUnits with an active pre-foreclosure or foreclosure notice on file.0
Recent SalesThe latest recorded arms-length sales in the building, newest first.
Unit 606AJun 5, 2026$360,000$265/ft²Unit 606ADec 8, 2025$438,900$323/ft²Unit 601ASep 23, 2024$420,000$348/ft²Unit 602AMay 2, 2024$420,000$370/ft²Unit 601ANov 4, 2020$336,000$278/ft²Unit 604AJul 30, 2020$305,000$268/ft²Unit HJan 28, 2020$295,000$260/ft²Unit CJul 13, 2018$265,480$220/ft²Unit 604AJul 2, 2018$285,000$251/ft²Unit 602AJun 13, 2018$260,000$229/ft²
Values are TopHap estimates, not appraisals. Sales, ownership and tax figures come from recorded county documents via ATTOM and can lag by several weeks.
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.7 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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.Condominium
CountyFairfax
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.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.Patio · 54 ft²
Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.
EHM
Terraset Elementary SchoolB+
Elementary · Grades PK–6 · 0.5 mi
South Lakes High SchoolC
High · Grades 9–12 · 0.7 mi
Hughes Middle SchoolA-
Middle · Grades 7–8 · 0.7 mi
District: Fairfax County Public Schools
Neighborhood · ZIP 20191These 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.97
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.82
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.40
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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.36%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.0%
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.30,650
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,674 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$138,723
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$166,233
Average tempThe average temperature here across a full year.55°F
Annual precipHow much rain and melted snow falls here in a typical year.44 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.63%
All UnitsEvery property record the county has at this street address, such as the units in a condo building. Prices shown are our estimates, not asking prices.
11709 Karbon Hill Ct Apt C
2 bd · 2 ba · 1,208 ft²
11709 Karbon Hill Ct Apt G
2 bd · 2 ba · 1,208 ft²
11709 Karbon Hill Ct Apt H
2 bd · 2 ba · 1,136 ft²
11709 Karbon Hill Ct # 601a
2 bd · 2 ba · 1,208 ft²
11709 Karbon Hill Ct # 602a
2 bd · 2 ba · 1,136 ft²
11709 Karbon Hill Ct # 603a
2 bd · 2 ba · 1,208 ft²
11709 Karbon Hill Ct # 604a
2 bd · 2 ba · 1,136 ft²
11709 Karbon Hill Ct # 605a
2 bd · 2 ba · 1,430 ft²
11709 Karbon Hill Ct # 606a
2 bd · 2 ba · 1,358 ft²
11709 Karbon Hill Ct # 611a
2 bd · 2 ba · 1,358 ft²
11709 Karbon Hill Ct # 612a
2 bd · 2 ba · 1,430 ft²
Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.
About 11709 Karbon Hill Ct
How many units are in 11709 Karbon Hill Ct, Reston, VA?
11709 Karbon Hill Ct, Reston, VA has 11 residential units across 6 floors, built in 1986, according to county assessor records.
What is a unit at 11709 Karbon Hill Ct, Reston, VA worth?
The median TopHap Estimate across the 11 units at 11709 Karbon Hill Ct, Reston, VA is $423,691. That works out to $334 per square foot. Units run from 1,136 to 1,430 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.
Is 11709 Karbon Hill Ct, Reston, VA expensive for Reston?
Units at 11709 Karbon Hill Ct, Reston, VA carry a median of $334 per square foot, 14% below the Reston median of $387 per square foot.
How often do units sell at 11709 Karbon Hill Ct, Reston, VA?
2 units at 11709 Karbon Hill Ct, Reston, VA sold in the last 12 months, out of 20 recorded arms-length sales all time. That is a turnover rate of 18.2% of the building per year. The median sale over that period was $399K.
Have units at 11709 Karbon Hill Ct, Reston, VA appreciated?
Across 10 repeat sales of the same unit, 11709 Karbon Hill Ct, Reston, VA returned a median 1.7% per year. Because each pair is the same unit bought and sold, the figure is not distorted by which units traded. The median owner held for 5.4 years.
What floor plans does 11709 Karbon Hill Ct, Reston, VA have?
The most common plan at 11709 Karbon Hill Ct, Reston, VA is a 2-bedroom of 1,208 square feet, repeated 4 times, with a median estimate of $414,754. TopHap identifies 4 recurring plans in the building.
Closest homes
- 11709 Karbon Hill Ct # 612a$438K0 ft · 2 bd · 2 ba · 1,430 ft² · Sold $251K · Aug 2011
- 11709 Karbon Hill Ct # 602a$452K0 ft · 2 bd · 2 ba · 1,136 ft² · Sold $420K · May 2024
- 11709 Karbon Hill Ct # 611a$432K0 ft · 2 bd · 2 ba · 1,358 ft² · Sold $245K · Jun 2009
- 11709 Karbon Hill Ct$361K0 ft · 2 bd · 2 ba · 1,358 ft² · Sold $360K · Jun 2026
- 11709 Karbon Hill Ct$380K0 ft · 2 bd · 2 ba · 1,136 ft² · Sold $305K · Jul 2020
- 11709 Karbon Hill Ct Apt H$400K0 ft · 2 bd · 2 ba · 1,136 ft² · Sold $295K · Jan 2020
- 11709 Karbon Hill Ct$388K0 ft · 2 bd · 2 ba · 1,208 ft² · Sold $140K · Dec 2001
- 11709 Karbon Hill Ct # 605a$440K0 ft · 2 bd · 2 ba · 1,430 ft²
More homes in Reston 20191
- 2226 Gunsmith Sq$500K2 bd · 2.5 ba · 1,232 ft² · Sold $450K · Aug 2026
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- 2648 Black Fir Ct$1.3M4 bd · 4.5 ba · 3,205 ft² · Sold $1.2M · Aug 2026
- 2329 Bedfordshire Cir$834K4 bd · 2.5 ba · 1,802 ft² · Sold $850K · Aug 2026
- 12711 Thunder Chase Dr$790K4 bd · 2.5 ba · 2,124 ft² · Sold $750K · Aug 2026
- 2037 Durand Dr$1.2M5 bd · 2.5 ba · 3,160 ft² · Sold $1.1M · Aug 2026
- 2604 Mountain Laurel Pl$1.3M4 bd · 4.5 ba · 3,205 ft² · Sold $1.3M · Aug 2026
- 10927 Harpers Square Ct$650K3 bd · 3 ba · 1,320 ft² · Sold $708K · Jul 2026
- 2260 Covent Gardens Ct$515K4 bd · 2.5 ba · 1,188 ft² · Sold $515K · Jul 2026
- 2215 Glencourse Ln$675K3 bd · 3 ba · 1,600 ft² · Sold $685K · Jul 2026
- 2238 Hunters Run Dr$431K2 bd · 2 ba · 1,392 ft² · Sold $400K · Jul 2026
- 2070 Lake Audubon Ct$1M3 bd · 3.5 ba · 1,596 ft² · Sold $416K · Jul 2026
Assigned schools
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