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

4004 CARGILL DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,456 sqftBuilt 2002

Property at a Glance

This home is estimated between $361,084 and $597,109, with a best estimate of $399,364. That places the property below the R222592G - CAT HOLLOW ALL SECTIONS R4 median of $451,685, in a neighborhood that declined 6.9% over the past year.

Estimated Value Range

$361,084 $597,109
Best Estimate
$399,364
WCAD Value
$363,389
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 $361,084 and $597,109. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

16709 DORMAN DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,584 sqft Built 1995
Raw Value $381,657
Adjusted Value $399,364

Adjusted -$34,552 for 128 sqft less living space and +$52,259 for being newer. Net adjustment: +$17,707.

16829 LUCKENWALD DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,585 sqft Built 1997
Raw Value $383,881
Adjusted Value $386,387

Adjusted -$34,822 for 129 sqft less living space and +$37,328 for being newer. Net adjustment: +$2,506.

16716 TOMCAT DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,675 sqft Built 1995
Raw Value $367,941
Adjusted Value $361,084

Adjusted -$59,116 for 219 sqft less living space and +$52,259 for being newer. Net adjustment: -$6,857.

102 NORTH FIELD ST, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 940 sqft Built 2002
Raw Value $457,821
Adjusted Value $597,109

Adjusted +$139,288 for 516 sqft more living space. Net adjustment: +$139,288.

3 bed 2 bath 1,550 sqft Built 1984
Raw Value $366,931
Adjusted Value $475,938

Adjusted -$25,374 for 94 sqft less living space and +$134,381 for being newer. Net adjustment: +$109,007.

The Neighborhood

This home is valued 19.5% below the R222592G - CAT HOLLOW ALL SECTIONS R4 median of $451,685. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 6.9% over the past year.

R222592G - CAT HOLLOW ALL SECTIONS R4

below average
1,233 Properties
$451,685 Median Value
-6.9% YoY Change
1% Have Pool
100% Have Garage
This Home
$363,389
Median
$451,685

This home is -19.5% below the subdivision median.

Tax Analysis

The estimated annual property tax is $6,956 across all districts. With a homestead exemption claimed, that drops to $5,638 — saving $1,318 per year. That's $470 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%$3,245
Brushy Creek MUDMUD0.3868%$1,406
Williamson CountyCounty0.3694%$1,343
Austin Community Collegespecial0.1034%$376
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$363
Williamson County FM/RdCounty0.0443%$161
Upper Brushy Creek WCIDWater0.0170%$62
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9141%$6,956

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $399,364 would pay approximately $2,493 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