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3906 BLUE MONSTER CV, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath2,145 sqftBuilt 2003

Property at a Glance

This home is estimated between $336,985 and $746,258, with a best estimate of $621,113. 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

$336,985 $746,258
Best Estimate
$621,113
WCAD Value
$442,306
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 $336,985 and $746,258. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

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 $531,410

Adjusted +$62,371 for 218 sqft more living space and +$1,965 for being newer. Net adjustment: +$64,336.

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 $658,032

Adjusted +$156,214 for 546 sqft more living space. Net adjustment: +$156,214.

3904 BLUE MONSTER CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,830 sqft Built 2001
Raw Value $527,060
Adjusted Value $621,113

Adjusted +$90,123 for 315 sqft more living space and +$3,930 for being newer. Net adjustment: +$94,053.

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 $746,258

Adjusted +$181,678 for 635 sqft more living space. Net adjustment: +$181,678.

3909 BLUE MONSTER CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,779 sqft Built 2002
Raw Value $516,411
Adjusted Value $336,985

Adjusted -$181,391 for 634 sqft less living space and +$1,965 for being newer. Net adjustment: -$179,426.

The Neighborhood

This home is valued 14.0% below the R550600D - Forest Creek Sec 15,16,19,31 median of $514,276. That positions it competitively for buyers comparing within the neighborhood. 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
$442,306
Median
$514,276

This home is -14.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,958 across all districts. With a homestead exemption claimed, that drops to $6,626 — saving $1,332 per year. That's $552 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%$3,950
Round RockCity0.3720%$1,645
Williamson CountyCounty0.3694%$1,634
Austin Community Collegespecial0.1034%$457
Williamson County FM/RdCounty0.0443%$196
Upper Brushy Creek WCIDWater0.0170%$75
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,958

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $621,113 would pay approximately $3,877 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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