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3904 BLUE MONSTER CV, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath1,830 sqftBuilt 2001

Property at a Glance

This home is estimated between $437,357 and $652,204, with a best estimate of $589,907. That places the property above the R550600D - Forest Creek Sec 15,16,19,31 median of $514,276, in a neighborhood that declined 8.7% over the past year.

Estimated Value Range

$437,357 $652,204
Best Estimate
$589,907
WCAD Value
$527,060
High Confidence

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

Based on 5 comparable properties in R550600D - Forest Creek Sec 15,16,19,31, this home's estimated market value is between $437,357 and $652,204. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3900 BLUE MONSTER CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
5 bed 4 bath 1,608 sqft Built 2002
Raw Value $542,471
Adjusted Value $604,022

Adjusted +$63,516 for 222 sqft more living space and -$1,965 for being older. Net adjustment: +$61,551.

3910 BLUE MONSTER CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,927 sqft Built 2002
Raw Value $467,074
Adjusted Value $437,357

Adjusted -$27,752 for 97 sqft less living space and -$1,965 for being older. Net adjustment: -$29,717.

3923 BLUE MONSTER CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 1,599 sqft Built 2003
Raw Value $501,818
Adjusted Value $563,979

Adjusted +$66,091 for 231 sqft more living space and -$3,930 for being older. Net adjustment: +$62,161.

3928 BLUE MONSTER CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,510 sqft Built 2003
Raw Value $564,580
Adjusted Value $652,204

Adjusted +$91,554 for 320 sqft more living space and -$3,930 for being older. Net adjustment: +$87,624.

3907 BLUE MONSTER CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
5 bed 4 bath 1,542 sqft Built 2002
Raw Value $509,473
Adjusted Value $589,907

Adjusted +$82,399 for 288 sqft more living space and -$1,965 for being older. Net adjustment: +$80,434.

The Neighborhood

This home is valued 2.5% above the R550600D - Forest Creek Sec 15,16,19,31 median of $514,276. With 274 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.7% over the past year.

R550600D - Forest Creek Sec 15,16,19,31

typical
274 Properties
$514,276 Median Value
-8.7% YoY Change
0% Have Pool
99% Have Garage
This Home
$527,060
Median
$514,276

This home is +2.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,483 across all districts. With a homestead exemption claimed, that drops to $8,136 — saving $1,347 per year. That's $678 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%$4,707
Round RockCity0.3720%$1,961
Williamson CountyCounty0.3694%$1,947
Austin Community Collegespecial0.1034%$545
Williamson County FM/RdCounty0.0443%$234
Upper Brushy Creek WCIDWater0.0170%$90
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$9,483

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $589,907 would pay approximately $3,682 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 4/19/2026.

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