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1920 MULLIGAN DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath2,155 sqftBuilt 2001

Property at a Glance

This home is estimated between $391,095 and $662,067, with a best estimate of $478,449. 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

$391,095 $662,067
Best Estimate
$478,449
WCAD Value
$559,520
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 $391,095 and $662,067. 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 $391,095

Adjusted -$174,405 for 570 sqft less living space and -$23,434 for being older. Net adjustment: -$197,839.

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 $472,088

Adjusted -$72,210 for 236 sqft less living space and +$1,803 for being newer. Net adjustment: -$70,407.

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 $581,753

Adjusted -$40,389 for 132 sqft less living space and -$14,421 for being older. Net adjustment: -$54,810.

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 $478,449

Adjusted -$68,844 for 225 sqft less living space and -$19,829 for being older. Net adjustment: -$88,673.

1904 MULLIGAN DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
5 bed 4 bath 1,942 sqft Built 2001
Raw Value $596,895
Adjusted Value $662,067

Adjusted +$65,172 for 213 sqft more living space. Net adjustment: +$65,172.

The Neighborhood

This home is valued 3.5% below the R545698D - Forest Creek Sec 8 & 9 median of $579,777. That positions it competitively for buyers comparing within the neighborhood. 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
$559,520
Median
$579,777

This home is -3.5% below the subdivision median.

Tax Analysis

The estimated annual property tax is $10,067 across all districts. With a homestead exemption claimed, that drops to $8,714 — saving $1,353 per year. That's $726 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%$4,997
Round RockCity0.3720%$2,081
Williamson CountyCounty0.3694%$2,067
Austin Community Collegespecial0.1034%$579
Williamson County FM/RdCounty0.0443%$248
Upper Brushy Creek WCIDWater0.0170%$95
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$10,067

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $478,449 would pay approximately $2,986 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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