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

405 MAPLE RUN, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,498 sqftBuilt 1992

Property at a Glance

This home is estimated between $289,698 and $387,379, with a best estimate of $318,592. That places the property below the R510485H - SOUTHCREEK median of $335,905, in a neighborhood that declined 4.2% over the past year.

Estimated Value Range

$289,698 $387,379
Best Estimate
$318,592
WCAD Value
$354,087
High Confidence

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

Based on 5 comparable properties in R510485H - SOUTHCREEK, this home's estimated market value is between $289,698 and $387,379. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

500 MAPLE RUN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,648 sqft Built 1998
Raw Value $363,126
Adjusted Value $318,592

Adjusted -$35,688 for 150 sqft less living space and -$8,846 for being older. Net adjustment: -$44,534.

523 MAPLE RUN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,105 sqft Built 1986
Raw Value $285,031
Adjusted Value $387,379

Adjusted +$93,502 for 393 sqft more living space and +$8,846 for being newer. Net adjustment: +$102,348.

402 MAPLE RUN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,742 sqft Built 1986
Raw Value $338,904
Adjusted Value $289,698

Adjusted -$58,052 for 244 sqft less living space and +$8,846 for being newer. Net adjustment: -$49,206.

401 MAPLE RUN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,704 sqft Built 1988
Raw Value $334,552
Adjusted Value $291,438

Adjusted -$49,011 for 206 sqft less living space and +$5,897 for being newer. Net adjustment: -$43,114.

521 MAPLE RUN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,282 sqft Built 1986
Raw Value $283,612
Adjusted Value $343,848

Adjusted +$51,390 for 216 sqft more living space and +$8,846 for being newer. Net adjustment: +$60,236.

The Neighborhood

This home is valued 5.4% above the R510485H - SOUTHCREEK median of $335,905. With 1,020 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 4.2% over the past year.

R510485H - SOUTHCREEK

typical
1,020 Properties
$335,905 Median Value
-4.2% YoY Change
1% Have Pool
97% Have Garage
This Home
$354,087
Median
$335,905

This home is +5.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,371 across all districts. With a homestead exemption claimed, that drops to $5,055 — saving $1,316 per year. That's $421 per month a buyer should budget. The assessed value increased +5.4% vs the subdivision average of -4.2%. This above-average increase gives a protest opportunity score of 53 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$3,162
Round RockCity0.3720%$1,317
Williamson CountyCounty0.3694%$1,308
Austin Community Collegespecial0.1034%$366
Williamson County FM/RdCounty0.0443%$157
Upper Brushy Creek WCIDWater0.0170%$60
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,371
53 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $318,592 would pay approximately $1,989 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