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

3425 SHIRAZ LOOP, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath1,279 sqftBuilt 2006

Property at a Glance

This home is estimated between $237,612 and $471,589, with a best estimate of $424,282. That places the property below the R530506E - SONOMA ALL SECTIONS median of $451,534, in a neighborhood that declined 7.0% over the past year.

Estimated Value Range

$237,612 $471,589
Best Estimate
$424,282
WCAD Value
$495,938
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $237,612 and $471,589. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

3506 SHIRAZ LOOP, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,355 sqft Built 2006
Raw Value $444,649
Adjusted Value $424,282

Adjusted -$20,367 for 76 sqft less living space. Net adjustment: -$20,367.

3410 SHIRAZ LOOP, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,170 sqft Built 2007
Raw Value $447,811
Adjusted Value $471,589

Adjusted +$29,210 for 109 sqft more living space and -$5,432 for being older. Net adjustment: +$23,778.

3406 SHIRAZ LOOP, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,767 sqft Built 2006
Raw Value $368,387
Adjusted Value $237,612

Adjusted -$130,775 for 488 sqft less living space. Net adjustment: -$130,775.

3504 SHIRAZ LOOP, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,029 sqft Built 2007
Raw Value $389,533
Adjusted Value $451,096

Adjusted +$66,995 for 250 sqft more living space and -$5,432 for being older. Net adjustment: +$61,563.

4 bed 2 bath 1,639 sqft Built 2018
Raw Value $452,285
Adjusted Value $290,626

Adjusted -$96,473 for 360 sqft less living space and -$65,186 for being older. Net adjustment: -$161,659.

The Neighborhood

This home is valued 9.8% above the R530506E - SONOMA ALL SECTIONS median of $451,534. With 1,029 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 7.0% over the past year.

R530506E - SONOMA ALL SECTIONS

typical
1,029 Properties
$451,534 Median Value
-7.0% YoY Change
2% Have Pool
100% Have Garage
This Home
$495,938
Median
$451,534

This home is +9.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $8,923 across all districts. With a homestead exemption claimed, that drops to $7,581 — saving $1,342 per year. That's $632 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%$4,429
Round RockCity0.3720%$1,845
Williamson CountyCounty0.3694%$1,832
Austin Community Collegespecial0.1034%$513
Williamson County FM/RdCounty0.0443%$220
Upper Brushy Creek WCIDWater0.0170%$84
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$8,923

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $424,282 would pay approximately $2,648 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