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603 ROLLINGWAY DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2,441 sqftBuilt 1984

Property at a Glance

This home is estimated between $520,124 and $614,263, with a best estimate of $548,097. That places the property above the R120X - Round Rock West Above 45 - Duplex median of $434,714, in a neighborhood that declined 1.8% over the past year.

Estimated Value Range

$520,124 $614,263
Best Estimate
$548,097
WCAD Value
$439,705
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R120X - Round Rock West Above 45 - Duplex. The estimated range of $520,124 and $614,263 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 2,044 sqft Built 1981
Raw Value $455,252
Adjusted Value $543,487

Adjusted +$80,721 for 397 sqft more living space and +$7,514 for being newer. Net adjustment: +$88,235.

3 bed 2 bath 1,877 sqft Built 1984
Raw Value $405,447
Adjusted Value $520,124

Adjusted +$114,677 for 564 sqft more living space. Net adjustment: +$114,677.

3 bed 2 bath 1,971 sqft Built 1975
Raw Value $496,156
Adjusted Value $614,263

Adjusted +$95,564 for 470 sqft more living space and +$22,543 for being newer. Net adjustment: +$118,107.

3 bed 2 bath 1,550 sqft Built 1984
Raw Value $366,931
Adjusted Value $548,097

Adjusted +$181,166 for 891 sqft more living space. Net adjustment: +$181,166.

4 bed 2 bath 1,934 sqft Built 1978
Raw Value $484,482
Adjusted Value $602,598

Adjusted +$103,087 for 507 sqft more living space and +$15,029 for being newer. Net adjustment: +$118,116.

The Neighborhood

This home is valued 1.1% above the R120X - Round Rock West Above 45 - Duplex median of $434,714. With 295 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 1.8% over the past year.

R120X - Round Rock West Above 45 - Duplex

typical
295 Properties
$434,714 Median Value
-1.8% YoY Change
0% Have Pool
84% Have Garage
This Home
$439,705
Median
$434,714

This home is +1.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $8,416 across all districts. With a homestead exemption claimed, that drops to $7,085 — saving $1,331 per year. That's $590 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%$3,927
Brushy Creek MUDMUD0.3868%$1,701
Williamson CountyCounty0.3694%$1,624
Austin Community Collegespecial0.1034%$455
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$440
Williamson County FM/RdCounty0.0443%$195
Upper Brushy Creek WCIDWater0.0170%$75
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9141%$8,416

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $548,097 would pay approximately $3,421 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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