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3947 UPPER PASSAGE LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath917 sqftBuilt 2000

Property at a Glance

This home is estimated between $290,972 and $369,376, with a best estimate of $328,542. 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

$290,972 $369,376
Best Estimate
$328,542
WCAD Value
$371,924
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 $290,972 and $369,376. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3939 UPPER PASSAGE LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 922 sqft Built 2000
Raw Value $296,531
Adjusted Value $295,513

Adjusted -$1,018 for 5 sqft less living space. Net adjustment: -$1,018.

3941 UPPER PASSAGE LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,097 sqft Built 2000
Raw Value $365,185
Adjusted Value $328,542

Adjusted -$36,643 for 180 sqft less living space. Net adjustment: -$36,643.

3940 UPPER PASSAGE LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 928 sqft Built 2000
Raw Value $371,615
Adjusted Value $369,376

Adjusted -$2,239 for 11 sqft less living space. Net adjustment: -$2,239.

3933 UPPER PASSAGE LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 922 sqft Built 2000
Raw Value $291,990
Adjusted Value $290,972

Adjusted -$1,018 for 5 sqft less living space. Net adjustment: -$1,018.

3945 UPPER PASSAGE LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,105 sqft Built 2000
Raw Value $367,596
Adjusted Value $329,324

Adjusted -$38,272 for 188 sqft less living space. Net adjustment: -$38,272.

The Neighborhood

This home is in line with the R107503F - PRESERVE AT STONE OAK - PH 3 & 4 median of $368,194. 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
$371,924
Median
$368,194

This home is +1.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,692 across all districts. With a homestead exemption claimed, that drops to $5,373 — saving $1,319 per year. That's $448 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%$3,322
Round RockCity0.3720%$1,384
Williamson CountyCounty0.3694%$1,374
Austin Community Collegespecial0.1034%$385
Williamson County FM/RdCounty0.0443%$165
Upper Brushy Creek WCIDWater0.0170%$63
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,692

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $328,542 would pay approximately $2,051 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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