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3853 CASTLE ROCK CV, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,045 sqftBuilt 2005

Property at a Glance

This home is estimated between $207,530 and $387,368, with a best estimate of $253,427. That places the property below the R107503F - PRESERVE AT STONE OAK - PH 3 & 4 median of $368,194, in a neighborhood that declined 10.9% over the past year.

Estimated Value Range

$207,530 $387,368
Best Estimate
$253,427
WCAD Value
$373,536
High Confidence

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

Based on 5 comparable properties in R107503F - PRESERVE AT STONE OAK - PH 3 & 4, this home's estimated market value is between $207,530 and $387,368. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3805 CASTLE ROCK CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,423 sqft Built 2005
Raw Value $330,378
Adjusted Value $253,427

Adjusted -$76,951 for 378 sqft less living space. Net adjustment: -$76,951.

3801 CASTLE ROCK CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 701 sqft Built 2005
Raw Value $317,339
Adjusted Value $387,368

Adjusted +$70,029 for 344 sqft more living space. Net adjustment: +$70,029.

3846 CASTLE ROCK CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,671 sqft Built 2005
Raw Value $334,967
Adjusted Value $207,530

Adjusted -$127,437 for 626 sqft less living space. Net adjustment: -$127,437.

3830 CASTLE ROCK CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,105 sqft Built 2005
Raw Value $370,509
Adjusted Value $358,295

Adjusted -$12,214 for 60 sqft less living space. Net adjustment: -$12,214.

3838 CASTLE ROCK CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,606 sqft Built 2005
Raw Value $326,773
Adjusted Value $212,568

Adjusted -$114,205 for 561 sqft less living space. Net adjustment: -$114,205.

The Neighborhood

This home is valued 1.5% above the R107503F - PRESERVE AT STONE OAK - PH 3 & 4 median of $368,194. With 1,045 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 10.9% over the past year.

R107503F - PRESERVE AT STONE OAK - PH 3 & 4

typical
1,045 Properties
$368,194 Median Value
-10.9% YoY Change
1% Have Pool
99% Have Garage
This Home
$373,536
Median
$368,194

This home is +1.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,721 across all districts. With a homestead exemption claimed, that drops to $5,402 — saving $1,319 per year. That's $450 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%$3,336
Round RockCity0.3720%$1,390
Williamson CountyCounty0.3694%$1,380
Austin Community Collegespecial0.1034%$386
Williamson County FM/RdCounty0.0443%$166
Upper Brushy Creek WCIDWater0.0170%$64
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,721

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $253,427 would pay approximately $1,582 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.

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