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3918 BLUE MONSTER CV, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

5 bed4 bath1,771 sqftBuilt 2002

Property at a Glance

This home is estimated between $510,215 and $589,106, with a best estimate of $549,063. 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

$510,215 $589,106
Best Estimate
$549,063
WCAD Value
$501,512
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 $510,215 and $589,106. 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 $589,106

Adjusted +$46,635 for 163 sqft more living space. Net adjustment: +$46,635.

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 $549,063

Adjusted +$49,210 for 172 sqft more living space and -$1,965 for being older. Net adjustment: +$47,245.

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 $512,145

Adjusted -$16,880 for 59 sqft less living space and +$1,965 for being newer. Net adjustment: -$14,915.

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 $574,991

Adjusted +$65,518 for 229 sqft more living space. Net adjustment: +$65,518.

3913 BLUE MONSTER CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
5 bed 4 bath 1,718 sqft Built 2002
Raw Value $495,051
Adjusted Value $510,215

Adjusted +$15,164 for 53 sqft more living space. Net adjustment: +$15,164.

The Neighborhood

This home is valued 2.5% 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
$501,512
Median
$514,276

This home is -2.5% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,024 across all districts. With a homestead exemption claimed, that drops to $7,681 — saving $1,343 per year. That's $640 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%$4,479
Round RockCity0.3720%$1,866
Williamson CountyCounty0.3694%$1,853
Austin Community Collegespecial0.1034%$519
Williamson County FM/RdCounty0.0443%$222
Upper Brushy Creek WCIDWater0.0170%$85
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$9,024

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $549,063 would pay approximately $3,427 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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