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3924 UPPER PASSAGE LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,524 sqftBuilt 2000

Property at a Glance

This home is estimated between $295,741 and $492,945, with a best estimate of $419,082. That places the property above 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

$295,741 $492,945
Best Estimate
$419,082
WCAD Value
$308,476
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 $295,741 and $492,945. 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 $419,082

Adjusted +$122,551 for 602 sqft more living space. Net adjustment: +$122,551.

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 $452,111

Adjusted +$86,926 for 427 sqft more living space. Net adjustment: +$86,926.

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 $492,945

Adjusted +$121,330 for 596 sqft more living space. Net adjustment: +$121,330.

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 $414,541

Adjusted +$122,551 for 602 sqft more living space. Net adjustment: +$122,551.

3926 UPPER PASSAGE LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,723 sqft Built 2000
Raw Value $336,252
Adjusted Value $295,741

Adjusted -$40,511 for 199 sqft less living space. Net adjustment: -$40,511.

The Neighborhood

This home is valued 16.2% 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

below average
1,045 Properties
$368,194 Median Value
-10.9% YoY Change
1% Have Pool
99% Have Garage
This Home
$308,476
Median
$368,194

This home is -16.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,550 across all districts. With a homestead exemption claimed, that drops to $4,243 — saving $1,307 per year. That's $354 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%$2,755
Round RockCity0.3720%$1,148
Williamson CountyCounty0.3694%$1,140
Austin Community Collegespecial0.1034%$319
Williamson County FM/RdCounty0.0443%$137
Upper Brushy Creek WCIDWater0.0170%$52
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,550

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $419,082 would pay approximately $2,616 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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