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1903 MULLIGAN DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath2,208 sqftBuilt 2005

Property at a Glance

This home is estimated between $413,549 and $605,181, with a best estimate of $495,515. That places the property below 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

$413,549 $605,181
Best Estimate
$495,515
WCAD Value
$615,583
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 $413,549 and $605,181. 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 $414,523

Adjusted -$158,188 for 517 sqft less living space and -$16,223 for being older. Net adjustment: -$174,411.

1908 MULLIGAN DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,391 sqft Built 2000
Raw Value $542,495
Adjusted Value $495,515

Adjusted -$55,993 for 183 sqft less living space and +$9,013 for being newer. Net adjustment: -$46,980.

1905 MULLIGAN DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 4 bath 2,809 sqft Built 2010
Raw Value $606,452
Adjusted Value $413,549

Adjusted -$183,890 for 601 sqft less living space and -$9,013 for being older. Net adjustment: -$192,903.

1909 MULLIGAN DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,287 sqft Built 2009
Raw Value $636,563
Adjusted Value $605,181

Adjusted -$24,172 for 79 sqft less living space and -$7,210 for being older. Net adjustment: -$31,382.

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 $501,877

Adjusted -$52,627 for 172 sqft less living space and -$12,618 for being older. Net adjustment: -$65,245.

The Neighborhood

This home is valued 6.2% 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
$615,583
Median
$579,777

This home is +6.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,076 across all districts. With a homestead exemption claimed, that drops to $9,712 — saving $1,364 per year. That's $809 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%$5,498
Round RockCity0.3720%$2,290
Williamson CountyCounty0.3694%$2,274
Austin Community Collegespecial0.1034%$637
Williamson County FM/RdCounty0.0443%$273
Upper Brushy Creek WCIDWater0.0170%$105
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$11,076

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $495,515 would pay approximately $3,093 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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