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509/511 GREENLAWN BLVD, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed4 bath1,812 sqftBuilt 1984

Property at a Glance

This home is estimated between $350,899 and $374,384, with a best estimate of $357,937. That places the property above the R450X - Round Rock East - Duplex median of $355,449, in a neighborhood that declined 8.7% over the past year.

Estimated Value Range

$350,899 $374,384
Best Estimate
$357,937
WCAD Value
$355,449
High Confidence

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

Based on 5 comparable properties in R450X - Round Rock East - Duplex, this home's estimated market value is between $350,899 and $374,384. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

612/614 GREENLAWN BLVD, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 4 bath 1,821 sqft Built 1985
Raw Value $377,133
Adjusted Value $374,384

Adjusted -$1,749 for 9 sqft less living space and -$1,000 for being older. Net adjustment: -$2,749.

400 GREENLAWN BLVD, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 4 bath 1,917 sqft Built 1984
Raw Value $371,302
Adjusted Value $350,899

Adjusted -$20,403 for 105 sqft less living space. Net adjustment: -$20,403.

609/611 GREENLAWN BLVD, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 4 bath 1,645 sqft Built 1985
Raw Value $330,801
Adjusted Value $362,251

Adjusted +$32,450 for 167 sqft more living space and -$1,000 for being older. Net adjustment: +$31,450.

624/626 GREENLAWN BLVD, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 4 bath 1,821 sqft Built 1985
Raw Value $360,686
Adjusted Value $357,937

Adjusted -$1,749 for 9 sqft less living space and -$1,000 for being older. Net adjustment: -$2,749.

625/627 GREENLAWN BLVD, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 4 bath 1,821 sqft Built 1985
Raw Value $360,310
Adjusted Value $357,561

Adjusted -$1,749 for 9 sqft less living space and -$1,000 for being older. Net adjustment: -$2,749.

The Neighborhood

This home is in line with the R450X - Round Rock East - Duplex median of $355,449. Note that values in this subdivision declined 8.7% over the past year.

R450X - Round Rock East - Duplex

typical
836 Properties
$355,449 Median Value
-8.7% YoY Change
0% Have Pool
84% Have Garage
This Home
$355,449
Median
$355,449

This home is +0.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,396 across all districts. With a homestead exemption claimed, that drops to $5,080 — saving $1,316 per year. That's $423 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%$3,175
Round RockCity0.3720%$1,322
Williamson CountyCounty0.3694%$1,313
Austin Community Collegespecial0.1034%$368
Williamson County FM/RdCounty0.0443%$158
Upper Brushy Creek WCIDWater0.0170%$60
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,396

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $357,937 would pay approximately $2,234 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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