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603 OLD WEST DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,299 sqftBuilt 1982

Property at a Glance

This home is estimated between $291,120 and $492,191, with a best estimate of $320,328. That places the property above the R332479H - CHISHOLM VALLEY & NORTHRIDGE ACRES & WILLOW RUN median of $281,358, in a neighborhood that declined 9.6% over the past year.

Estimated Value Range

$291,120 $492,191
Best Estimate
$320,328
WCAD Value
$314,934
Low Confidence

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

There are 5 comparable properties within range, but none are in R332479H - CHISHOLM VALLEY & NORTHRIDGE ACRES & WILLOW RUN. The estimated range of $291,120 and $492,191 should be treated as a rough guide.

Comparable Properties (5)

4 bed 2 bath 1,276 sqft Built 1979
Raw Value $412,181
Adjusted Value $421,819

Adjusted +$4,961 for 23 sqft more living space and +$4,677 for being newer. Net adjustment: +$9,638.

3 bed 2 bath 1,594 sqft Built 1979
Raw Value $350,078
Adjusted Value $291,120

Adjusted -$63,635 for 295 sqft less living space and +$4,677 for being newer. Net adjustment: -$58,958.

3 bed 2 bath 1,625 sqft Built 1984
Raw Value $388,330
Adjusted Value $320,328

Adjusted -$70,322 for 326 sqft less living space and -$3,118 for being older and +$5,438 for having a garage. Net adjustment: -$68,002.

3 bed 2 bath 1,655 sqft Built 1979
Raw Value $380,963
Adjusted Value $308,846

Adjusted -$76,794 for 356 sqft less living space and +$4,677 for being newer. Net adjustment: -$72,117.

4 bed 2 bath 1,134 sqft Built 1979
Raw Value $451,921
Adjusted Value $492,191

Adjusted +$35,593 for 165 sqft more living space and +$4,677 for being newer. Net adjustment: +$40,270.

The Neighborhood

This home is valued 11.9% above the R332479H - CHISHOLM VALLEY & NORTHRIDGE ACRES & WILLOW RUN median of $281,358. With 1,006 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 9.6% over the past year.

R332479H - CHISHOLM VALLEY & NORTHRIDGE ACRES & WILLOW RUN

typical
1,006 Properties
$281,358 Median Value
-9.6% YoY Change
2% Have Pool
84% Have Garage
This Home
$314,934
Median
$281,358

This home is +11.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $5,667 across all districts. With a homestead exemption claimed, that drops to $4,358 — saving $1,309 per year. That's $363 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%$2,813
Round RockCity0.3720%$1,172
Williamson CountyCounty0.3694%$1,164
Austin Community Collegespecial0.1034%$326
Williamson County FM/RdCounty0.0443%$140
Upper Brushy Creek WCIDWater0.0170%$54
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,667

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $320,328 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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