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3919 BLUE MONSTER CV, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath1,791 sqftBuilt 2001

Property at a Glance

This home is estimated between $426,199 and $641,046, with a best estimate of $552,820. 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

$426,199 $641,046
Best Estimate
$552,820
WCAD Value
$522,557
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 $426,199 and $641,046. 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 $592,863

Adjusted +$52,357 for 183 sqft more living space and -$1,965 for being older. Net adjustment: +$50,392.

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 $426,199

Adjusted -$38,910 for 136 sqft less living space and -$1,965 for being older. Net adjustment: -$40,875.

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 $552,820

Adjusted +$54,932 for 192 sqft more living space and -$3,930 for being older. Net adjustment: +$51,002.

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 $515,902

Adjusted -$11,158 for 39 sqft less living space. Net adjustment: -$11,158.

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 $641,046

Adjusted +$80,396 for 281 sqft more living space and -$3,930 for being older. Net adjustment: +$76,466.

The Neighborhood

This home is valued 1.6% 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
$522,557
Median
$514,276

This home is +1.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,402 across all districts. With a homestead exemption claimed, that drops to $8,055 — saving $1,347 per year. That's $671 per month a buyer should budget. The assessed value increased -2.4% vs the subdivision average of -8.7%. This above-average increase gives a protest opportunity score of 32 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$4,667
Round RockCity0.3720%$1,944
Williamson CountyCounty0.3694%$1,931
Austin Community Collegespecial0.1034%$540
Williamson County FM/RdCounty0.0443%$232
Upper Brushy Creek WCIDWater0.0170%$89
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$9,402
32 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $552,820 would pay approximately $3,451 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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