Beta Williamson County, TX only — data and coverage are limited during early access.

604 BUFFALO PASS, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,130 sqftBuilt 1975

Property at a Glance

This home is estimated between $220,441 and $262,655, with a best estimate of $240,761. That places the property below 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

$220,441 $262,655
Best Estimate
$240,761
WCAD Value
$255,734
High Confidence

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

Based on 5 comparable properties in R332479H - CHISHOLM VALLEY & NORTHRIDGE ACRES & WILLOW RUN, this home's estimated market value is between $220,441 and $262,655. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

603 BUFFALO PASS, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,398 sqft Built 1975
Raw Value $279,414
Adjusted Value $221,603

Adjusted -$57,811 for 268 sqft less living space. Net adjustment: -$57,811.

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 $248,225

Adjusted -$13,374 for 62 sqft less living space and -$3,118 for being older. Net adjustment: -$16,492.

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 $262,655

Adjusted +$431 for 2 sqft more living space and -$3,118 for being older. Net adjustment: -$2,687.

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 $220,441

Adjusted -$64,714 for 300 sqft less living space and -$7,526 for no pool. Net adjustment: -$72,240.

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 $240,761

Adjusted -$11,648 for 54 sqft less living space and -$12,472 for being older. Net adjustment: -$24,120.

The Neighborhood

This home is valued 9.1% below the R332479H - CHISHOLM VALLEY & NORTHRIDGE ACRES & WILLOW RUN median of $281,358. That positions it competitively for buyers comparing within the neighborhood. 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
$255,734
Median
$281,358

This home is -9.1% below the subdivision median.

Tax Analysis

The estimated annual property tax is $4,601 across all districts. With a homestead exemption claimed, that drops to $3,304 — saving $1,297 per year. That's $275 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%$2,284
Round RockCity0.3720%$951
Williamson CountyCounty0.3694%$945
Austin Community Collegespecial0.1034%$264
Williamson County FM/RdCounty0.0443%$113
Upper Brushy Creek WCIDWater0.0170%$43
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$4,601

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $240,761 would pay approximately $1,503 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.

View full property details