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Single Family ResidenceResidential
$400,823$137 / 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 93How 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

257 ALLEN CT SW

LILBURN, GA 30047
4
Beds
3 / 1
Baths
2,930 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.
0.57 ac
Lot SizeThe size of the land the home sits on, from county records.
1972
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$401K
$375K low$427K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$704 (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.$161,320 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$30,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$131,320
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$161,320
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$403,300

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.54
37
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
14
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
86
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
92
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
41
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.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
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountyGwinnett
Lot (acres)The size of the land the home sits on, from county records.0.57
ConstructionThe main material the home's frame and walls are built from.Wood (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
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, Basement
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 368 ft²Patio · 112 ft²

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

M
Trickum Middle SchoolB+
Middle · Grades 6–8 · 0.8 mi
E
Camp Creek Elementary SchoolA-
Elementary · Grades KG–5 · 1.1 mi
H
Parkview High SchoolB-
High · Grades 9–12 · 1.3 mi

District: Gwinnett County School District

Neighborhood · ZIP 30047These 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.84
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 100.51

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.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.7%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.76,659
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,709 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$90,005
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$108,017
Average tempThe average temperature here across a full year.61°F
Annual precipHow much rain and melted snow falls here in a typical year.53 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.61%

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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

257 Allen Ct Sw 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.

  • Costs less per square foot than 92% of homes in Gwinnett County
  • Bigger than 75% of homes in Lilburn 30047
  • Has a bigger lot than 82% of homes in Gwinnett County
  • Older than 94% of homes in Gwinnett County

What homes are worth in Lilburn 30047

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

This home
$263K$735K

This home is worth more than 54% of homes in Lilburn 30047.

How it measures up in Lilburn 30047

The dot is this home. The mark in the middle is the typical home in Lilburn 30047.

Estimated value$400,823
CheaperTypical $390,239Pricier

Pricier than 54% of homes nearby

Price per ft²$137
CheaperTypical $175Pricier

Pricier than 9% of homes nearby

Living area2,930 ft²
SmallerTypical 2,305 ft²Bigger

Bigger than 75% of homes nearby

Lot size0.57 ac
SmallerTypical 0.43 acBigger

Bigger than 75% of homes nearby

Year built1972
OlderTypical 1983Newer

Newer than 15% of homes nearby

How 257 Allen Ct Sw ranks against every home in each area.
MeasureThis homeLilburn 30047Gwinnett County
Estimated valuepricier than$400,82354% of homes51% of homes
Price per ft²pricier than$1379% of homes8% of homes
Living areabigger than2,930 ft²75% of homes74% of homes
Lot sizebigger than0.57 ac75% of homes82% of homes
Year builtnewer than197215% of homes6% of homes

About 257 Allen Ct Sw

How much is 257 Allen Ct Sw, Lilburn, GA worth?

The TopHap Estimate for 257 Allen Ct Sw, Lilburn, GA is $400,823 as of Aug 30, 2026. The likely range is $374,515 to $427,131. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 257 Allen Ct Sw, Lilburn, GA?

257 Allen Ct Sw, Lilburn, GA has 4 bedrooms, 3 bathrooms, 2,930 square feet of living space and a 0.57-acre lot.

When was 257 Allen Ct Sw, Lilburn, GA built?

257 Allen Ct Sw, Lilburn, GA was built in 1972, making it 54 years old. It is a conventional home. The building has 2 stories.

What schools serve 257 Allen Ct Sw, Lilburn, GA?

257 Allen Ct Sw, Lilburn, GA is assigned to Trickum Middle School (middle), rated B+; Camp Creek Elementary School (elementary), rated A-; Parkview High School (high), rated B-. All sit in Gwinnett County School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 257 Allen Ct Sw, Lilburn, GA compare to other homes in Lilburn 30047?

Among the 20,713 homes in Lilburn 30047, it is worth more than 54% of them ($400,823 against a typical $390,239), its price per square foot is higher than 9% of them ($137 against a typical $175), it is bigger than 75% of them (2,930 ft² against a typical 2,305 ft²), its lot is bigger than 75% of them (0.57 ac against a typical 0.43 ac) and it is newer than 15% of them (1972 against a typical 1983). Measured against all of Gwinnett County, it is worth more than 51% 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 257 Allen Ct Sw, Lilburn, GA?

The 2025 property tax bill for 257 Allen Ct Sw, Lilburn, GA was $704. The county assessed it at $161,320.

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