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1905 MULLIGAN DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed4 bath2,809 sqftBuilt 2010

Property at a Glance

This home is estimated between $607,426 and $840,118, with a best estimate of $694,780. That places the property above the R545698D - Forest Creek Sec 8 & 9 median of $579,777, in a neighborhood that declined 6.5% over the past year.

Estimated Value Range

$607,426 $840,118
Best Estimate
$694,780
WCAD Value
$606,452
High Confidence

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

Based on 5 comparable properties in R545698D - Forest Creek Sec 8 & 9, this home's estimated market value is between $607,426 and $840,118. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1924 MULLIGAN DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,725 sqft Built 2014
Raw Value $588,934
Adjusted Value $607,426

Adjusted +$25,702 for 84 sqft more living space and -$7,210 for being older. Net adjustment: +$18,492.

1926 MULLIGAN DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,380 sqft Built 2012
Raw Value $567,122
Adjusted Value $694,780

Adjusted +$131,263 for 429 sqft more living space and -$3,605 for being older. Net adjustment: +$127,658.

1911 MULLIGAN DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,493 sqft Built 2011
Raw Value $583,609
Adjusted Value $678,494

Adjusted +$96,688 for 316 sqft more living space and -$1,803 for being older. Net adjustment: +$94,885.

1912 MULLIGAN DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
5 bed 4 bath 2,272 sqft Built 2001
Raw Value $659,587
Adjusted Value $840,118

Adjusted +$164,308 for 537 sqft more living space and +$16,223 for being newer. Net adjustment: +$180,531.

1903 MULLIGAN DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,208 sqft Built 2005
Raw Value $615,583
Adjusted Value $808,486

Adjusted +$183,890 for 601 sqft more living space and +$9,013 for being newer. Net adjustment: +$192,903.

The Neighborhood

This home is valued 4.6% above the R545698D - Forest Creek Sec 8 & 9 median of $579,777. With 219 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 6.5% over the past year.

R545698D - Forest Creek Sec 8 & 9

typical
219 Properties
$579,777 Median Value
-6.5% YoY Change
2% Have Pool
97% Have Garage
This Home
$606,452
Median
$579,777

This home is +4.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,912 across all districts. With a homestead exemption claimed, that drops to $9,549 — saving $1,363 per year. That's $796 per month a buyer should budget. The assessed value increased +0.6% vs the subdivision average of -6.5%. This above-average increase gives a protest opportunity score of 36 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$5,416
Round RockCity0.3720%$2,256
Williamson CountyCounty0.3694%$2,241
Austin Community Collegespecial0.1034%$627
Williamson County FM/RdCounty0.0443%$269
Upper Brushy Creek WCIDWater0.0170%$103
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$10,912
36 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $694,780 would pay approximately $4,337 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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