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3300 ALEXANDER VALLEY CV, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath2,287 sqftBuilt 2003

Property at a Glance

This home is estimated between $510,702 and $562,437, with a best estimate of $558,387. That places the property above the R530506E - SONOMA ALL SECTIONS median of $451,534, in a neighborhood that declined 7.0% over the past year.

Estimated Value Range

$510,702 $562,437
Best Estimate
$558,387
WCAD Value
$399,143
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R530506E - SONOMA ALL SECTIONS. The estimated range of $510,702 and $562,437 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 1,708 sqft Built 2011
Raw Value $338,805
Adjusted Value $510,702

Adjusted +$155,161 for 579 sqft more living space and -$43,457 for being older and +$60,193 for having a garage. Net adjustment: +$171,897.

3 bed 2 bath 1,530 sqft Built 2011
Raw Value $329,848
Adjusted Value $549,446

Adjusted +$202,862 for 757 sqft more living space and -$43,457 for being older and +$60,193 for having a garage. Net adjustment: +$219,598.

3 bed 2 bath 1,488 sqft Built 2010
Raw Value $326,152
Adjusted Value $562,437

Adjusted +$214,117 for 799 sqft more living space and -$38,025 for being older and +$60,193 for having a garage. Net adjustment: +$236,285.

3 bed 2 bath 1,488 sqft Built 2011
Raw Value $327,655
Adjusted Value $558,508

Adjusted +$214,117 for 799 sqft more living space and -$43,457 for being older and +$60,193 for having a garage. Net adjustment: +$230,853.

3 bed 2 bath 1,488 sqft Built 2011
Raw Value $327,534
Adjusted Value $558,387

Adjusted +$214,117 for 799 sqft more living space and -$43,457 for being older and +$60,193 for having a garage. Net adjustment: +$230,853.

The Neighborhood

This home is valued 11.6% below the R530506E - SONOMA ALL SECTIONS median of $451,534. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 7.0% over the past year.

R530506E - SONOMA ALL SECTIONS

typical
1,029 Properties
$451,534 Median Value
-7.0% YoY Change
2% Have Pool
100% Have Garage
This Home
$399,143
Median
$451,534

This home is -11.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,182 across all districts. With a homestead exemption claimed, that drops to $5,858 — saving $1,324 per year. That's $488 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%$3,565
Round RockCity0.3720%$1,485
Williamson CountyCounty0.3694%$1,475
Austin Community Collegespecial0.1034%$413
Williamson County FM/RdCounty0.0443%$177
Upper Brushy Creek WCIDWater0.0170%$68
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,182

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $558,387 would pay approximately $3,485 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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