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1915 MULLIGAN DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath2,211 sqftBuilt 2016

Property at a Glance

This home is estimated between $434,296 and $625,927, with a best estimate of $516,262. 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

$434,296 $625,927
Best Estimate
$516,262
WCAD Value
$606,882
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 $434,296 and $625,927. 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 $435,268

Adjusted -$157,271 for 514 sqft less living space and +$3,605 for being newer. Net adjustment: -$153,666.

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 $516,262

Adjusted -$55,075 for 180 sqft less living space and +$28,842 for being newer. Net adjustment: -$26,233.

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 $434,296

Adjusted -$182,972 for 598 sqft less living space and +$10,816 for being newer. Net adjustment: -$172,156.

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 $625,927

Adjusted -$23,254 for 76 sqft less living space and +$12,618 for being newer. Net adjustment: -$10,636.

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 $522,622

Adjusted -$51,710 for 169 sqft less living space and +$7,210 for being newer. Net adjustment: -$44,500.

The Neighborhood

This home is valued 4.7% 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
$606,882
Median
$579,777

This home is +4.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,919 across all districts. With a homestead exemption claimed, that drops to $9,557 — saving $1,362 per year. That's $796 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%$5,420
Round RockCity0.3720%$2,258
Williamson CountyCounty0.3694%$2,242
Austin Community Collegespecial0.1034%$628
Williamson County FM/RdCounty0.0443%$269
Upper Brushy Creek WCIDWater0.0170%$103
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$10,919

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $516,262 would pay approximately $3,222 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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