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603 LILAC DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,506 sqftBuilt 1999

Property at a Glance

This home is estimated between $297,061 and $367,201, with a best estimate of $320,277. That places the property below the R462475H - Egger Acres median of $353,946, in a neighborhood that declined 4.4% over the past year.

Estimated Value Range

$297,061 $367,201
Best Estimate
$320,277
WCAD Value
$351,562
High Confidence

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

Based on 5 comparable properties in R462475H - Egger Acres, this home's estimated market value is between $297,061 and $367,201. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

604 LILAC DR E, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,704 sqft Built 1976
Raw Value $349,687
Adjusted Value $297,061

Adjusted -$43,030 for 198 sqft less living space and -$9,596 for being older. Net adjustment: -$52,626.

600 OAK DR E, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,264 sqft Built 1977
Raw Value $307,816
Adjusted Value $351,230

Adjusted +$52,592 for 242 sqft more living space and -$9,178 for being older. Net adjustment: +$43,414.

603 KAROLYN DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,471 sqft Built 1975
Raw Value $322,684
Adjusted Value $320,277

Adjusted +$7,606 for 35 sqft more living space and -$10,013 for being older. Net adjustment: -$2,407.

603 ANDOVER DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,571 sqft Built 1978
Raw Value $339,246
Adjusted Value $316,359

Adjusted -$14,126 for 65 sqft less living space and -$8,761 for being older. Net adjustment: -$22,887.

604 OAK DR E, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,616 sqft Built 1976
Raw Value $400,702
Adjusted Value $367,201

Adjusted -$23,905 for 110 sqft less living space and -$9,596 for being older. Net adjustment: -$33,501.

The Neighborhood

This home is in line with the R462475H - Egger Acres median of $353,946. Note that values in this subdivision declined 4.4% over the past year.

R462475H - Egger Acres

typical
340 Properties
$353,946 Median Value
-4.4% YoY Change
6% Have Pool
87% Have Garage
This Home
$351,562
Median
$353,946

This home is -0.7% below the subdivision median.

Tax Analysis

The estimated annual property tax is $6,326 across all districts. With a homestead exemption claimed, that drops to $5,010 — saving $1,316 per year. That's $418 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%$3,140
Round RockCity0.3720%$1,308
Williamson CountyCounty0.3694%$1,299
Austin Community Collegespecial0.1034%$364
Williamson County FM/RdCounty0.0443%$156
Upper Brushy Creek WCIDWater0.0170%$60
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,326

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $320,277 would pay approximately $1,999 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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