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Single Family ResidenceResidential
$1,235,098$341 / 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 90How 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 $1,192,800 on Aug 10, 2017

3920 SLEEPY LN

DALLAS, TX 75229
4
Beds
3.5
Baths
3,622 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.
0.41 ac
Lot SizeThe size of the land the home sits on, from county records.
1971
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.2M
$1.1M low$1.4M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,192,800 · Aug 10, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,764 (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.$1,098,520 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$750,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$348,520
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$983,270
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,098,520

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyDALLAS
Lot (acres)The size of the land the home sits on, from county records.0.41
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.Central
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.No

Transaction History(2)

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
Harry C. Withers Elementary SchoolA-
Elementary · Grades PK–6 · 0.2 mi
H
W.T. White High SchoolC-
High · Grades 9–12 · 1.5 mi
M
E.D. Walker Middle SchoolB-
Middle · Grades 7–8 · 2.6 mi

District: Dallas Independent School District

Neighborhood · ZIP 75229These 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.75
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.105
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.24

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.34,141
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,717 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$135,840
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$182,106
Average tempThe average temperature here across a full year.66°F
Annual precipHow much rain and melted snow falls here in a typical year.38 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.62%

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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

3920 Sleepy Ln 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 94% of homes in Dallas County
  • Costs more per square foot than 90% of homes in Dallas County
  • Bigger than 93% of homes in Dallas County
  • Has a bigger lot than 91% of homes in Northaven Park
  • Newer than 89% of homes in Northaven Park

What homes are worth in Dallas 75229

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

This home
$305K$6.6M

This home is worth more than 68% of homes in Dallas 75229.

How it measures up in Dallas 75229

The dot is this home. The mark in the middle is the typical home in Dallas 75229.

Estimated value$1,235,098
CheaperTypical $846,015Pricier

Pricier than 68% of homes nearby

Price per ft²$341
CheaperTypical $346Pricier

Pricier than 48% of homes nearby

Living area3,622 ft²
SmallerTypical 2,416 ft²Bigger

Bigger than 77% of homes nearby

Lot size0.41 ac
SmallerTypical 0.29 acBigger

Bigger than 80% of homes nearby

Year built1971
OlderTypical 1961Newer

Newer than 76% of homes nearby

How 3920 Sleepy Ln ranks against every home in each area.
MeasureThis homeNorthaven ParkDallas 75229Dallas County
Estimated valuepricier than$1,235,09875% of homes68% of homes94% of homes
Price per ft²pricier than$34121% of homes48% of homes90% of homes
Living areabigger than3,622 ft²84% of homes77% of homes93% of homes
Lot sizebigger than0.41 ac91% of homes80% of homes87% of homes
Year builtnewer than197189% of homes76% of homes43% of homes

About 3920 Sleepy Ln

How much is 3920 Sleepy Ln, Dallas, TX worth?

The TopHap Estimate for 3920 Sleepy Ln, Dallas, TX is $1,235,098 as of Aug 30, 2026. The likely range is $1,111,205 to $1,358,991. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3920 Sleepy Ln, Dallas, TX last sell?

3920 Sleepy Ln, Dallas, TX last sold on Aug 10, 2017 for $1,192,800, according to the county's recorded deed.

How big is 3920 Sleepy Ln, Dallas, TX?

3920 Sleepy Ln, Dallas, TX has 4 bedrooms, 3.5 bathrooms, 3,622 square feet of living space and a 0.41-acre lot.

When was 3920 Sleepy Ln, Dallas, TX built?

3920 Sleepy Ln, Dallas, TX was built in 1971, making it 55 years old. The building has 1 story.

What schools serve 3920 Sleepy Ln, Dallas, TX?

3920 Sleepy Ln, Dallas, TX is assigned to Harry C. Withers Elementary School (elementary), rated A-; W.T. White High School (high), rated C-; E.D. Walker Middle School (middle), rated B-. All sit in Dallas Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3920 Sleepy Ln, Dallas, TX compare to other homes in Dallas 75229?

Among the 9,546 homes in Dallas 75229, it is worth more than 68% of them ($1,235,098 against a typical $846,015), its price per square foot is higher than 48% of them ($341 against a typical $346), it is bigger than 77% of them (3,622 ft² against a typical 2,416 ft²), its lot is bigger than 80% of them (0.41 ac against a typical 0.29 ac) and it is newer than 76% of them (1971 against a typical 1961). Measured against all of Dallas County, it is worth more than 94% 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 3920 Sleepy Ln, Dallas, TX?

The 2025 property tax bill for 3920 Sleepy Ln, Dallas, TX was $5,764. The county assessed it at $1,098,520.

More homes on Sleepy Ln

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Assigned schools

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