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

4002 SPRINGWILLOW LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath2,105 sqftBuilt 1997

Property at a Glance

This home is estimated between $496,115 and $837,028, with a best estimate of $600,123. That places the property above the L494500D - Vista Oaks Sec 5B Ph 2 & SEC 5C median of $449,628, in a neighborhood that declined 2.9% over the past year.

Estimated Value Range

$496,115 $837,028
Best Estimate
$600,123
WCAD Value
$436,368
Low Confidence

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

There are 5 comparable properties within range, but none are in L494500D - Vista Oaks Sec 5B Ph 2 & SEC 5C. The estimated range of $496,115 and $837,028 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 2,154 sqft Built 2001
Raw Value $860,722
Adjusted Value $832,716

Adjusted -$13,796 for 49 sqft less living space and -$14,210 for being older. Net adjustment: -$28,006.

4 bed 2 bath 1,934 sqft Built 1978
Raw Value $484,482
Adjusted Value $600,123

Adjusted +$48,146 for 171 sqft more living space and +$67,495 for being newer. Net adjustment: +$115,641.

4 bed 3 bath 2,219 sqft Built 2007
Raw Value $904,649
Adjusted Value $837,028

Adjusted -$32,097 for 114 sqft less living space and -$35,524 for being older. Net adjustment: -$67,621.

3 bed 2 bath 2,044 sqft Built 1981
Raw Value $455,252
Adjusted Value $529,265

Adjusted +$17,175 for 61 sqft more living space and +$56,838 for being newer. Net adjustment: +$74,013.

3 bed 2 bath 1,675 sqft Built 1995
Raw Value $367,941
Adjusted Value $496,115

Adjusted +$121,069 for 430 sqft more living space and +$7,105 for being newer. Net adjustment: +$128,174.

The Neighborhood

This home is valued 2.9% below the L494500D - Vista Oaks Sec 5B Ph 2 & SEC 5C median of $449,628. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 2.9% over the past year.

L494500D - Vista Oaks Sec 5B Ph 2 & SEC 5C

typical
904 Properties
$449,628 Median Value
-2.9% YoY Change
1% Have Pool
99% Have Garage
This Home
$436,368
Median
$449,628

This home is -2.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,440 across all districts. With a homestead exemption claimed, that drops to $6,837 — saving $1,603 per year. That's $570 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%$4,743
Williamson CountyCounty0.3694%$1,612
Vista Oaks MUDMUD0.2131%$930
Austin Community Collegespecial0.1034%$451
Williamson County ESD #9 - Round RockESD0.0999%$436
Williamson County FM/RdCounty0.0443%$193
Upper Brushy Creek WCIDWater0.0170%$74
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9341%$8,440

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $600,123 would pay approximately $3,746 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