Beta Williamson County, TX only — data and coverage are limited during early access.

400 VALONA LOOP, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,411 sqftBuilt 2006

Property at a Glance

This home is estimated between $419,757 and $755,970, with a best estimate of $606,606. That places the property above the R212505E - BRUSHY CREEK SEC 4 & 5 median of $455,574, in a neighborhood that appreciated 1.7% over the past year.

Estimated Value Range

$419,757 $755,970
Best Estimate
$606,606
WCAD Value
$481,100
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R212505E - BRUSHY CREEK SEC 4 & 5. The estimated range of $419,757 and $755,970 should be treated as a rough guide.

Comparable Properties (5)

4 bed 2 bath 1,234 sqft Built 1997
Raw Value $530,076
Adjusted Value $688,721

Adjusted +$45,624 for 177 sqft more living space and +$113,021 for being newer. Net adjustment: +$158,645.

4 bed 2 bath 1,796 sqft Built 1999
Raw Value $617,939
Adjusted Value $606,606

Adjusted -$99,238 for 385 sqft less living space and +$87,905 for being newer. Net adjustment: -$11,333.

4 bed 2 bath 1,760 sqft Built 1997
Raw Value $396,695
Adjusted Value $419,757

Adjusted -$89,959 for 349 sqft less living space and +$113,021 for being newer. Net adjustment: +$23,062.

4 bed 2 bath 1,481 sqft Built 1983
Raw Value $485,181
Adjusted Value $755,970

Adjusted -$18,043 for 70 sqft less living space and +$288,832 for being newer. Net adjustment: +$270,789.

3 bed 2 bath 1,224 sqft Built 1999
Raw Value $451,899
Adjusted Value $588,005

Adjusted +$48,201 for 187 sqft more living space and +$87,905 for being newer. Net adjustment: +$136,106.

The Neighborhood

This home is valued 5.6% above the R212505E - BRUSHY CREEK SEC 4 & 5 median of $455,574. With 154 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 1.7% over the past year.

R212505E - BRUSHY CREEK SEC 4 & 5

typical
154 Properties
$455,574 Median Value
+1.7% YoY Change
0% Have Pool
100% Have Garage
This Home
$481,100
Median
$455,574

This home is +5.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,209 across all districts. With a homestead exemption claimed, that drops to $7,870 — saving $1,339 per year. That's $656 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%$4,297
Brushy Creek MUDMUD0.3868%$1,861
Williamson CountyCounty0.3694%$1,777
Austin Community Collegespecial0.1034%$497
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$481
Williamson County FM/RdCounty0.0443%$213
Upper Brushy Creek WCIDWater0.0170%$82
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9141%$9,209

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $606,606 would pay approximately $3,786 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.

View full property details