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513/515 TEXAS AVE, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed4 bath2,102 sqftBuilt 1985

Property at a Glance

This home is estimated between $366,072 and $402,169, with a best estimate of $396,243. 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

$366,072 $402,169
Best Estimate
$396,243
WCAD Value
$417,617
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 $366,072 and $402,169. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

514/516 SIERRA CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 4 bath 1,821 sqft Built 1984
Raw Value $342,026
Adjusted Value $397,628

Adjusted +$54,602 for 281 sqft more living space and +$1,000 for being newer. Net adjustment: +$55,602.

510/512 SIERRA CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 4 bath 1,815 sqft Built 1984
Raw Value $339,475
Adjusted Value $396,243

Adjusted +$55,768 for 287 sqft more living space and +$1,000 for being newer. Net adjustment: +$56,768.

510/512 WILLOWBEND CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 4 bath 1,770 sqft Built 1984
Raw Value $336,657
Adjusted Value $402,169

Adjusted +$64,512 for 332 sqft more living space and +$1,000 for being newer. Net adjustment: +$65,512.

512/514 GREGORY CT, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,253 sqft Built 1994
Raw Value $404,415
Adjusted Value $366,072

Adjusted -$29,341 for 151 sqft less living space and -$9,002 for being older. Net adjustment: -$38,343.

509/511 GREGORY CT, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,121 sqft Built 1995
Raw Value $392,108
Adjusted Value $378,414

Adjusted -$3,692 for 19 sqft less living space and -$10,002 for being older. Net adjustment: -$13,694.

The Neighborhood

This home is valued 17.5% 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

above average
836 Properties
$355,449 Median Value
-8.7% YoY Change
0% Have Pool
84% Have Garage
This Home
$417,617
Median
$355,449

This home is +17.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,514 across all districts. With a homestead exemption claimed, that drops to $6,187 — saving $1,327 per year. That's $516 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%$3,730
Round RockCity0.3720%$1,554
Williamson CountyCounty0.3694%$1,543
Austin Community Collegespecial0.1034%$432
Williamson County FM/RdCounty0.0443%$185
Upper Brushy Creek WCIDWater0.0170%$71
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,514

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $396,243 would pay approximately $2,473 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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