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1000 ST WILLIAMS AVE, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,700 sqftBuilt 1976

Property at a Glance

This home is estimated between $314,382 and $421,405, with a best estimate of $384,079. That places the property below the R325576F - ROUND ROCK WEST/LAKE CREEK WEST/SHADOW BROOK median of $476,515, in a neighborhood that declined 5.9% over the past year.

Estimated Value Range

$314,382 $421,405
Best Estimate
$384,079
WCAD Value
$546,574
High Confidence

Based on 5 comparable properties(5 in the same subdivision)

Based on 5 comparable properties in R325576F - ROUND ROCK WEST/LAKE CREEK WEST/SHADOW BROOK, this home's estimated market value is between $314,382 and $421,405. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1002 LAKEWOOD LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,290 sqft Built 1979
Raw Value $531,237
Adjusted Value $384,079

Adjusted -$140,057 for 590 sqft less living space and -$7,101 for being older. Net adjustment: -$147,158.

1002 PENNY LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,867 sqft Built 1977
Raw Value $402,932
Adjusted Value $360,922

Adjusted -$39,643 for 167 sqft less living space and -$2,367 for being older. Net adjustment: -$42,010.

1002 ABBEY RD, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,743 sqft Built 1976
Raw Value $427,631
Adjusted Value $417,423

Adjusted -$10,208 for 43 sqft less living space. Net adjustment: -$10,208.

1004 DEER RUN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,744 sqft Built 1976
Raw Value $431,850
Adjusted Value $421,405

Adjusted -$10,445 for 44 sqft less living space. Net adjustment: -$10,445.

1002 AQUALINE CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,504 sqft Built 1977
Raw Value $507,606
Adjusted Value $314,382

Adjusted -$190,857 for 804 sqft less living space and -$2,367 for being older. Net adjustment: -$193,224.

The Neighborhood

This home is valued 14.7% above the R325576F - ROUND ROCK WEST/LAKE CREEK WEST/SHADOW BROOK median of $476,515. With 822 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 5.9% over the past year.

R325576F - ROUND ROCK WEST/LAKE CREEK WEST/SHADOW BROOK

typical
822 Properties
$476,515 Median Value
-5.9% YoY Change
5% Have Pool
96% Have Garage
This Home
$546,574
Median
$476,515

This home is +14.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,834 across all districts. With a homestead exemption claimed, that drops to $8,483 — saving $1,351 per year. That's $707 per month a buyer should budget. The assessed value increased roughly in line with the neighborhood, so a tax protest is unlikely to yield significant savings.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$4,881
Round RockCity0.3720%$2,033
Williamson CountyCounty0.3694%$2,019
Austin Community Collegespecial0.1034%$565
Williamson County FM/RdCounty0.0443%$242
Upper Brushy Creek WCIDWater0.0170%$93
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$9,834

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $384,079 would pay approximately $2,397 per month (principal and interest only, excluding taxes and insurance).

Data sourced from Williamson County Appraisal District (WCAD), Texas Education Agency (TEA), and Federal Reserve Economic Data (FRED). Assessment values reflect the appraisal district's estimate, not market sale prices. Report generated 4/18/2026.

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