Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$451,565$266 / 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
Last sold for $214,400 on Sep 17, 2010

18 TIMBERLINE DR

ROUND ROCK, TX 78665
1
Baths
1,697 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.
1.07 ac
Lot SizeThe size of the land the home sits on, from county records.
1979
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$452K
$421K low$482K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$214,400 · Sep 17, 2010

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,450 (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.$389,765 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$85,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$304,765
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$414,216
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$389,765

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.61
47
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
71
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
100
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
43
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
46
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.12 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
CountyWILLIAMSON
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1992
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.Spa/Hot Tub (Only)
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 184 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.

E
Louine Noble Elementary SchoolB
Elementary · Grades PK–5 · 2.7 mi
M
Liberty Hill Middle SchoolB+
Middle · Grades 6–8 · 2.9 mi
H
Liberty Hill High SchoolB+
High · Grades 9–12 · 3.1 mi

District: Liberty Hill Independent School District

Neighborhood · ZIP 78665These 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.50
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.86
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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.68,549
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,056 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$112,722
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$135,285
Average tempThe average temperature here across a full year.67°F
Annual precipHow much rain and melted snow falls here in a typical year.35 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.60%

Owner Tools

Do you own this home?
Claim this home

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

18 Timberline Dr 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.

  • Among the highest price per square foot in Round Rock 78665
  • Smaller than 87% of homes in Round Rock 78665
  • Among the largest lots in Round Rock 78665
  • Among the oldest homes in Round Rock 78665

What homes are worth in Round Rock 78665

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

This home
$283K$788K

This home is worth more than 64% of homes in Round Rock 78665.

How it measures up in Round Rock 78665

The dot is this home. The mark in the middle is the typical home in Round Rock 78665.

Estimated value$451,565
CheaperTypical $405,455Pricier

Pricier than 64% of homes nearby

Price per ft²$266
CheaperTypical $183Pricier

Pricier than almost all homes nearby

Living area1,697 ft²
SmallerTypical 2,314 ft²Bigger

Bigger than 13% of homes nearby

Lot size1.07 ac
SmallerTypical 0.18 acBigger

Bigger than almost all homes nearby

Year built1979
OlderTypical 2011Newer

Older than almost all homes nearby

How 18 Timberline Dr ranks against every home in each area.
MeasureThis homeRound Rock 78665Williamson County
Estimated valuepricier than$451,56564% of homes61% of homes
Price per ft²pricier than$266almost all homes92% of homes
Living areabigger than1,697 ft²13% of homes28% of homes
Lot sizebigger than1.07 acalmost all homes89% of homes
Year builtnewer than1979almost no homes8% of homes

About 18 Timberline Dr

How much is 18 Timberline Dr, Round Rock, TX worth?

The TopHap Estimate for 18 Timberline Dr, Round Rock, TX is $451,565 as of Aug 30, 2026. The likely range is $420,638 to $482,492. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Timberline Dr, Round Rock, TX last sell?

18 Timberline Dr, Round Rock, TX last sold on Sep 17, 2010 for $214,400, according to the county's recorded deed.

How big is 18 Timberline Dr, Round Rock, TX?

18 Timberline Dr, Round Rock, TX has 1 bathrooms and 1,697 square feet of living space.

When was 18 Timberline Dr, Round Rock, TX built?

18 Timberline Dr, Round Rock, TX was built in 1979, making it 47 years old. The building has 1 story.

What schools serve 18 Timberline Dr, Round Rock, TX?

18 Timberline Dr, Round Rock, TX is assigned to Louine Noble Elementary School (elementary), rated B; Liberty Hill Middle School (middle), rated B+; Liberty Hill High School (high), rated B+. All sit in Liberty Hill Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18 Timberline Dr, Round Rock, TX compare to other homes in Round Rock 78665?

Among the 20,801 homes in Round Rock 78665, it is worth more than 64% of them ($451,565 against a typical $405,455), its price per square foot is higher than almost all of them ($266 against a typical $183), it is bigger than 13% of them (1,697 ft² against a typical 2,314 ft²), its lot is bigger than almost all of them (1.07 ac against a typical 0.18 ac) and it is newer than almost none of them (1979 against a typical 2011). Measured against all of Williamson County, it is worth more than 61% 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 18 Timberline Dr, Round Rock, TX?

The 2025 property tax bill for 18 Timberline Dr, Round Rock, TX was $1,450. The county assessed it at $389,765.

More homes on Timberline Dr

Closest homes

More homes in Round Rock 78665

Assigned schools

Explore the area

See this home in context

Open 18 Timberline Dr on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map