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Single Family ResidenceResidential
$1,926,469$819 / 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 91How 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

121 SAILFISH ST

LAKEWAY, TX 78734
5
Baths
2,353 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.
0.65 ac
Lot SizeThe size of the land the home sits on, from county records.
1968
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$1.9M
$1.7M low$2.1M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$28,889 (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.$1,610,682 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,364,250
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$246,432
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,940,581
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,610,682

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.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.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
CountyTRAVIS
Lot (acres)The size of the land the home sits on, from county records.0.65
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.Metal
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
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.Deck · 414 ft²Porch · 1,098 ft²Boat access

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
Serene Hills Elementary SchoolA+
Elementary · Grades PK–5 · 1.8 mi
H
Lake Travis High SchoolA-
High · Grades 9–12 · 3.4 mi
M
Hudson Bend Middle SchoolA-
Middle · Grades 6–8 · 3.5 mi

District: Lake Travis Independent School District

Neighborhood · ZIP 78734These 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.102
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.18

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.38%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.7%
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.24,125
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,006 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$124,178
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$162,901
Average tempThe average temperature here across a full year.67°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%

Owner Tools

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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

121 Sailfish 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 96% of homes in Lakeway
  • Among the highest price per square foot in Lakeway
  • Bigger than 70% of homes in Travis County
  • Has a bigger lot than 90% of homes in Travis County
  • Older than 97% of homes in Lakeway

What homes are worth in Austin 78734

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

This home
$297K$2.8M

This home is worth more than 94% of homes in Austin 78734.

How it measures up in Austin 78734

The dot is this home. The mark in the middle is the typical home in Austin 78734.

Estimated value$1,926,469
CheaperTypical $684,576Pricier

Pricier than 94% of homes nearby

Price per ft²$819
CheaperTypical $295Pricier

Pricier than 97% of homes nearby

Living area2,353 ft²
SmallerTypical 2,272 ft²Bigger

Bigger than 54% of homes nearby

Lot size0.65 ac
SmallerTypical 0.34 acBigger

Bigger than 80% of homes nearby

Year built1968
OlderTypical 1998Newer

Newer than 5% of homes nearby

How 121 Sailfish St ranks against every home in each area.
MeasureThis homeLakewayAustin 78734Travis County
Estimated valuepricier than$1,926,46996% of homes94% of homes96% of homes
Price per ft²pricier than$819almost all homes97% of homes97% of homes
Living areabigger than2,353 ft²42% of homes54% of homes70% of homes
Lot sizebigger than0.65 ac89% of homes80% of homes90% of homes
Year builtnewer than19683% of homes5% of homes13% of homes

About 121 Sailfish St

How much is 121 Sailfish St, Lakeway, TX worth?

The TopHap Estimate for 121 Sailfish St, Lakeway, TX is $1,926,469 as of Aug 30, 2026. The likely range is $1,749,289 to $2,103,649. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 121 Sailfish St, Lakeway, TX last sell?

121 Sailfish St, Lakeway, TX last sold on Nov 4, 2024, according to the county's recorded deed.

How big is 121 Sailfish St, Lakeway, TX?

121 Sailfish St, Lakeway, TX has 5 bathrooms, 2,353 square feet of living space and a 0.65-acre lot.

When was 121 Sailfish St, Lakeway, TX built?

121 Sailfish St, Lakeway, TX was built in 1968, making it 58 years old. The building has 1 story.

What schools serve 121 Sailfish St, Lakeway, TX?

121 Sailfish St, Lakeway, TX is assigned to Serene Hills Elementary School (elementary), rated A+; Lake Travis High School (high), rated A-; Hudson Bend Middle School (middle), rated A-. All sit in Lake Travis Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 121 Sailfish St, Lakeway, TX compare to other homes in Austin 78734?

Among the 10,374 homes in Austin 78734, it is worth more than 94% of them ($1,926,469 against a typical $684,576), its price per square foot is higher than 97% of them ($819 against a typical $295), it is bigger than 54% of them (2,353 ft² against a typical 2,272 ft²), its lot is bigger than 80% of them (0.65 ac against a typical 0.34 ac) and it is newer than 5% of them (1968 against a typical 1998). Measured against all of Travis County, it is worth more than 96% 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 121 Sailfish St, Lakeway, TX?

The 2025 property tax bill for 121 Sailfish St, Lakeway, TX was $28,889. The county assessed it at $1,610,682.

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