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

4004 CREST CV, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath2,179 sqftBuilt 2006

Property at a Glance

This home is estimated between $363,976 and $724,265, with a best estimate of $621,203. That places the property below the L495414C - BORHO/MAYFIELD RANCH/SAPPHIRE LOOP median of $623,673, in a neighborhood that declined 8.0% over the past year.

Estimated Value Range

$363,976 $724,265
Best Estimate
$621,203
WCAD Value
$687,386
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $363,976 and $724,265. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

4 bed 2,136 sqft Built 2005
Raw Value $610,720
Adjusted Value $625,895

Adjusted +$13,178 for 43 sqft more living space and +$1,997 for being newer. Net adjustment: +$15,175.

4008 CREST CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,353 sqft Built 2006
Raw Value $674,528
Adjusted Value $621,203

Adjusted -$53,325 for 174 sqft less living space. Net adjustment: -$53,325.

4012 CREST CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,972 sqft Built 2006
Raw Value $660,826
Adjusted Value $724,265

Adjusted +$63,439 for 207 sqft more living space. Net adjustment: +$63,439.

3924 CREST LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,755 sqft Built 2007
Raw Value $577,914
Adjusted Value $399,391

Adjusted -$176,526 for 576 sqft less living space and -$1,997 for being older. Net adjustment: -$178,523.

3928 CREST LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,785 sqft Built 2007
Raw Value $551,693
Adjusted Value $363,976

Adjusted -$185,720 for 606 sqft less living space and -$1,997 for being older. Net adjustment: -$187,717.

The Neighborhood

This home is valued 10.2% above the L495414C - BORHO/MAYFIELD RANCH/SAPPHIRE LOOP median of $623,673. With 427 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.0% over the past year.

L495414C - BORHO/MAYFIELD RANCH/SAPPHIRE LOOP

typical
427 Properties
$623,673 Median Value
-8.0% YoY Change
1% Have Pool
100% Have Garage
This Home
$687,386
Median
$623,673

This home is +10.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,700 across all districts. With a homestead exemption claimed, that drops to $12,051 — saving $1,649 per year. That's $1,004 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
Leander ISDSchool1.0869%$7,471
Round RockCity0.3720%$2,557
Williamson CountyCounty0.3694%$2,540
Austin Community Collegespecial0.1034%$711
Williamson County FM/RdCounty0.0443%$305
Upper Brushy Creek WCIDWater0.0170%$117
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9931%$13,700

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $621,203 would pay approximately $3,878 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