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603 BUFFALO PASS, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,398 sqftBuilt 1975

Property at a Glance

This home is estimated between $278,252 and $347,256, with a best estimate of $306,036. 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

$278,252 $347,256
Best Estimate
$306,036
WCAD Value
$279,414
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $278,252 and $347,256. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

608 BUFFALO PASS, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,192 sqft Built 1977
Raw Value $264,717
Adjusted Value $306,036

Adjusted +$44,437 for 206 sqft more living space and -$3,118 for being older. Net adjustment: +$41,319.

600 BUFFALO PASS, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,128 sqft Built 1977
Raw Value $265,342
Adjusted Value $320,466

Adjusted +$58,242 for 270 sqft more living space and -$3,118 for being older. Net adjustment: +$55,124.

3 bed 2 bath 1,484 sqft Built 1980
Raw Value $373,602
Adjusted Value $347,256

Adjusted -$18,551 for 86 sqft less living space and -$7,795 for being older. Net adjustment: -$26,346.

601 BUFFALO PASS, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,430 sqft Built 1975
Raw Value $292,681
Adjusted Value $278,252

Adjusted -$6,903 for 32 sqft less living space and -$7,526 for no pool. Net adjustment: -$14,429.

600 PURPLE SAGE DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,184 sqft Built 1983
Raw Value $264,881
Adjusted Value $298,572

Adjusted +$46,163 for 214 sqft more living space and -$12,472 for being older. Net adjustment: +$33,691.

The Neighborhood

This home is in line with the R332479H - CHISHOLM VALLEY & NORTHRIDGE ACRES & WILLOW RUN median of $281,358. 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
$279,414
Median
$281,358

This home is -0.7% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,027 across all districts. With a homestead exemption claimed, that drops to $3,725 — saving $1,302 per year. That's $310 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%$2,495
Round RockCity0.3720%$1,039
Williamson CountyCounty0.3694%$1,032
Austin Community Collegespecial0.1034%$289
Williamson County FM/RdCounty0.0443%$124
Upper Brushy Creek WCIDWater0.0170%$48
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,027

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $306,036 would pay approximately $1,910 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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