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

909 ROCK SPRING CV, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath2,416 sqftBuilt 1986

Property at a Glance

This home is estimated between $407,042 and $931,906, with a best estimate of $710,934. That places the property above the R280589F - Oakcreek Sec 1,2, and (AMD's) median of $502,867, in a neighborhood that declined 8.9% over the past year.

Estimated Value Range

$407,042 $931,906
Best Estimate
$710,934
WCAD Value
$508,333
Low Confidence

Based on 5 comparable properties(2 in the same subdivision)

There are 5 comparable properties within range, but few are in R280589F - Oakcreek Sec 1,2, and (AMD's). The estimated range of $407,042 and $931,906 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 2,386 sqft Built 1983
Raw Value $761,891
Adjusted Value $768,725

Adjusted +$10,004 for 30 sqft more living space and +$6,326 for being newer and -$9,496 for no pool. Net adjustment: +$6,834.

908 ROCK SPRING CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,235 sqft Built 1986
Raw Value $598,298
Adjusted Value $658,653

Adjusted +$60,355 for 181 sqft more living space. Net adjustment: +$60,355.

3 bed 2 bath 2,367 sqft Built 2000
Raw Value $420,223
Adjusted Value $407,042

Adjusted +$16,339 for 49 sqft more living space and -$29,520 for being older. Net adjustment: -$13,181.

3 bed 3 bath 2,540 sqft Built 1985
Raw Value $750,173
Adjusted Value $710,934

Adjusted -$41,348 for 124 sqft less living space and +$2,109 for being newer. Net adjustment: -$39,239.

905 ROCK SPRING CV, ROUND ROCK, TX 78681
0.00 mi 95% similar Same subdivision
4 bed 2 bath 1,473 sqft Built 1992
Raw Value $630,109
Adjusted Value $931,906

Adjusted +$314,448 for 943 sqft more living space and -$12,651 for being older. Net adjustment: +$301,797.

The Neighborhood

This home is valued 1.1% above the R280589F - Oakcreek Sec 1,2, and (AMD's) median of $502,867. With 787 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.9% over the past year.

R280589F - Oakcreek Sec 1,2, and (AMD's)

typical
787 Properties
$502,867 Median Value
-8.9% YoY Change
2% Have Pool
99% Have Garage
This Home
$508,333
Median
$502,867

This home is +1.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,146 across all districts. With a homestead exemption claimed, that drops to $7,802 — saving $1,344 per year. That's $650 per month a buyer should budget. The assessed value increased -1.5% vs the subdivision average of -8.9%. This above-average increase gives a protest opportunity score of 37 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$4,540
Round RockCity0.3720%$1,891
Williamson CountyCounty0.3694%$1,878
Austin Community Collegespecial0.1034%$526
Williamson County FM/RdCounty0.0443%$225
Upper Brushy Creek WCIDWater0.0170%$86
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$9,146
37 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $710,934 would pay approximately $4,438 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