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400 GREENLAWN BLVD, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed4 bath1,917 sqftBuilt 1984

Property at a Glance

This home is estimated between $356,552 and $394,787, with a best estimate of $378,340. 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

$356,552 $394,787
Best Estimate
$378,340
WCAD Value
$371,302
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 $356,552 and $394,787. 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 $394,787

Adjusted +$18,654 for 96 sqft more living space and -$1,000 for being older. Net adjustment: +$17,654.

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 $382,654

Adjusted +$52,853 for 272 sqft more living space and -$1,000 for being older. Net adjustment: +$51,853.

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 $378,340

Adjusted +$18,654 for 96 sqft more living space and -$1,000 for being older. Net adjustment: +$17,654.

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 $377,964

Adjusted +$18,654 for 96 sqft more living space and -$1,000 for being older. Net adjustment: +$17,654.

705/707 GREENLAWN BLVD, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 4 bath 1,982 sqft Built 1985
Raw Value $370,182
Adjusted Value $356,552

Adjusted -$12,630 for 65 sqft less living space and -$1,000 for being older. Net adjustment: -$13,630.

The Neighborhood

This home is valued 4.5% above the R450X - Round Rock East - Duplex median of $355,449. With 836 homes in the subdivision, the property sits in the upper tier. 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
$371,302
Median
$355,449

This home is +4.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,681 across all districts. With a homestead exemption claimed, that drops to $5,362 — saving $1,319 per year. That's $447 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%$3,316
Round RockCity0.3720%$1,381
Williamson CountyCounty0.3694%$1,372
Austin Community Collegespecial0.1034%$384
Williamson County FM/RdCounty0.0443%$165
Upper Brushy Creek WCIDWater0.0170%$63
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,681

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $378,340 would pay approximately $2,362 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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