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Single Family ResidenceResidential
$585,820$494 / 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 Oct 21, 2026
Last sold for $278,400 on Jul 20, 2011

504 ZENNIA ST

AUSTIN, TX 78751
1
Baths
1,186 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1948
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$586K
$549K low$623K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$278,400 · Jul 20, 2011

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,034 (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.$653,751 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$354,257
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$299,494
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$669,412
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$653,751

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyTRAVIS
Lot (acres)The size of the land the home sits on, from county records.0.14
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Pier/Post & Beam
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
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.Porch · 380 ft²

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.

H
McCallum High SchoolA
High · Grades 9–12 · 0.6 mi
E
Ridgetop Elementary SchoolA
Elementary · Grades PK–5 · 0.8 mi
M
Lamar Middle SchoolA
Middle · Grades 6–8 · 1.5 mi

District: Austin Independent School District

Neighborhood · ZIP 78751These 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.144
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.85
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.17

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.43%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.14%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.16,734
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6,815 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$77,484
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$101,441
Average tempThe average temperature here across a full year.68°F
Annual precipHow much rain and melted snow falls here in a typical year.34 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.60%

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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

504 Zennia St 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 71% of homes in North Loop
  • Costs more per square foot than 88% of homes in Travis County
  • Smaller than 85% of homes in Travis County
  • Has a smaller lot than 71% of homes in Travis County
  • Older than 96% of homes in Travis County

What homes are worth in Austin 78751

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

This home
$139K$1.5M

This home is worth more than 50% of homes in Austin 78751.

How it measures up in Austin 78751

The dot is this home. The mark in the middle is the typical home in Austin 78751.

Estimated value$585,820
CheaperTypical $588,874Pricier

Pricier than 50% of homes nearby

Price per ft²$494
CheaperTypical $424Pricier

Pricier than 71% of homes nearby

Living area1,186 ft²
SmallerTypical 1,440 ft²Bigger

Bigger than 37% of homes nearby

Lot size0.14 ac
SmallerTypical 0.15 acBigger

Bigger than 46% of homes nearby

Year built1948
OlderTypical 1950Newer

Newer than 44% of homes nearby

How 504 Zennia St ranks against every home in each area.
MeasureThis homeNorth LoopAustin 78751Travis County
Estimated valuepricier than$585,82071% of homes50% of homes63% of homes
Price per ft²pricier than$49484% of homes71% of homes88% of homes
Living areabigger than1,186 ft²45% of homes37% of homes15% of homes
Lot sizebigger than0.14 ac50% of homes46% of homes29% of homes
Year builtnewer than194833% of homes44% of homes4% of homes

About 504 Zennia St

How much is 504 Zennia St, Austin, TX worth?

The TopHap Estimate for 504 Zennia St, Austin, TX is $585,820 as of Oct 21, 2026. The likely range is $548,939 to $622,701. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 504 Zennia St, Austin, TX last sell?

504 Zennia St, Austin, TX last sold on Jul 20, 2011 for $278,400, according to the county's recorded deed.

How big is 504 Zennia St, Austin, TX?

504 Zennia St, Austin, TX has 1 bathrooms, 1,186 square feet of living space and a 0.14-acre lot.

When was 504 Zennia St, Austin, TX built?

504 Zennia St, Austin, TX was built in 1948, making it 78 years old. The building has 1 story.

What schools serve 504 Zennia St, Austin, TX?

504 Zennia St, Austin, TX is assigned to McCallum High School (high), rated A; Ridgetop Elementary School (elementary), rated A; Lamar Middle School (middle), rated A. All sit in Austin Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 504 Zennia St, Austin, TX compare to other homes in Austin 78751?

Among the 4,311 homes in Austin 78751, it is worth more than 50% of them ($585,820 against a typical $588,874), its price per square foot is higher than 71% of them ($494 against a typical $424), it is bigger than 37% of them (1,186 ft² against a typical 1,440 ft²), its lot is bigger than 46% of them (0.14 ac against a typical 0.15 ac) and it is newer than 44% of them (1948 against a typical 1950). Measured against all of Travis County, it is worth more than 63% 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 504 Zennia St, Austin, TX?

The 2025 property tax bill for 504 Zennia St, Austin, TX was $11,034. The county assessed it at $653,751.

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