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644 RUSK RD, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,714 sqftBuilt 2005

Property at a Glance

This home is estimated between $312,716 and $588,956, with a best estimate of $420,166. That places the property below the R530506E - SONOMA ALL SECTIONS median of $451,534, in a neighborhood that declined 7.0% over the past year.

Estimated Value Range

$312,716 $588,956
Best Estimate
$420,166
WCAD Value
$363,669
High Confidence

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

Based on 5 comparable properties in R530506E - SONOMA ALL SECTIONS, this home's estimated market value is between $312,716 and $588,956. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

683 RUSK RD, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,325 sqft Built 2005
Raw Value $481,130
Adjusted Value $585,375

Adjusted +$104,245 for 389 sqft more living space. Net adjustment: +$104,245.

828 RUSK RD, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,478 sqft Built 2003
Raw Value $346,058
Adjusted Value $420,166

Adjusted +$63,244 for 236 sqft more living space and +$10,864 for being newer. Net adjustment: +$74,108.

841 RUSK RD, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,508 sqft Built 2005
Raw Value $533,752
Adjusted Value $588,956

Adjusted +$55,204 for 206 sqft more living space. Net adjustment: +$55,204.

904 RUSK RD, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,904 sqft Built 2004
Raw Value $376,897
Adjusted Value $312,716

Adjusted -$50,916 for 190 sqft less living space and +$5,432 for being newer and -$18,697 for no pool. Net adjustment: -$64,181.

741 RUSK RD, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,890 sqft Built 2003
Raw Value $370,228
Adjusted Value $333,927

Adjusted -$47,165 for 176 sqft less living space and +$10,864 for being newer. Net adjustment: -$36,301.

The Neighborhood

This home is valued 19.5% 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

below average
1,029 Properties
$451,534 Median Value
-7.0% YoY Change
2% Have Pool
100% Have Garage
This Home
$363,669
Median
$451,534

This home is -19.5% below the subdivision median.

Tax Analysis

The estimated annual property tax is $6,543 across all districts. With a homestead exemption claimed, that drops to $5,226 — saving $1,317 per year. That's $436 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%$3,248
Round RockCity0.3720%$1,353
Williamson CountyCounty0.3694%$1,344
Austin Community Collegespecial0.1034%$376
Williamson County FM/RdCounty0.0443%$161
Upper Brushy Creek WCIDWater0.0170%$62
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,543

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $420,166 would pay approximately $2,623 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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