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

3926 UPPER PASSAGE LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,723 sqftBuilt 2000

Property at a Glance

This home is estimated between $328,118 and $360,283, with a best estimate of $339,513. 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

$328,118 $360,283
Best Estimate
$339,513
WCAD Value
$336,252
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 $328,118 and $360,283. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3927 UPPER PASSAGE LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,682 sqft Built 2000
Raw Value $343,318
Adjusted Value $351,664

Adjusted +$8,346 for 41 sqft more living space. Net adjustment: +$8,346.

3943 UPPER PASSAGE LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,544 sqft Built 2000
Raw Value $291,678
Adjusted Value $328,118

Adjusted +$36,440 for 179 sqft more living space. Net adjustment: +$36,440.

3922 UPPER PASSAGE LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,813 sqft Built 2000
Raw Value $354,893
Adjusted Value $336,571

Adjusted -$18,322 for 90 sqft less living space. Net adjustment: -$18,322.

3942 UPPER PASSAGE LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,682 sqft Built 2000
Raw Value $331,167
Adjusted Value $339,513

Adjusted +$8,346 for 41 sqft more living space. Net adjustment: +$8,346.

3920 UPPER PASSAGE LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,953 sqft Built 2000
Raw Value $407,105
Adjusted Value $360,283

Adjusted -$46,822 for 230 sqft less living space. Net adjustment: -$46,822.

The Neighborhood

This home is valued 8.7% below the R107503F - PRESERVE AT STONE OAK - PH 3 & 4 median of $368,194. That positions it competitively for buyers comparing within the neighborhood. 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
$336,252
Median
$368,194

This home is -8.7% below the subdivision median.

Tax Analysis

The estimated annual property tax is $6,050 across all districts. With a homestead exemption claimed, that drops to $4,738 — saving $1,312 per year. That's $395 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%$3,003
Round RockCity0.3720%$1,251
Williamson CountyCounty0.3694%$1,242
Austin Community Collegespecial0.1034%$348
Williamson County FM/RdCounty0.0443%$149
Upper Brushy Creek WCIDWater0.0170%$57
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,050

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $339,513 would pay approximately $2,119 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