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3570 ROCKIN J RD, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed21,632 sqftBuilt 1998

Property at a Glance

This home is estimated between $4,042,343 and $5,540,747, with a best estimate of $5,011,037.

Estimated Value Range

$4,042,343 $5,540,747
Best Estimate
$5,011,037
WCAD Value
$3,599,240
Low Confidence

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

There are 5 comparable properties within range, but none are in R20IM - Multi-tenant Industrial - Flex - RR east I-35. The estimated range of $4,042,343 and $5,540,747 should be treated as a rough guide.

Comparable Properties (5)

3 bed 12,840 sqft Built 1981
Raw Value $1,921,193
Adjusted Value $4,042,343

Adjusted +$2,122,869 for 8,792 sqft more living space and -$1,719 for being older. Net adjustment: +$2,121,150.

3 bed 2 bath 2,010 sqft Built 2005
Raw Value $325,308
Adjusted Value $5,003,645

Adjusted +$4,737,822 for 19,622 sqft more living space and +$708 for being newer and -$60,193 for no garage. Net adjustment: +$4,678,337.

3 bed 1,945 sqft Built 1984
Raw Value $788,646
Adjusted Value $5,540,747

Adjusted +$4,753,517 for 19,687 sqft more living space and -$1,416 for being older. Net adjustment: +$4,752,101.

3 bed 2 bath 1,965 sqft Built 2006
Raw Value $321,733
Adjusted Value $5,011,037

Adjusted +$4,748,688 for 19,667 sqft more living space and +$809 for being newer and -$60,193 for no garage. Net adjustment: +$4,689,304.

3 bed 2 bath 1,360 sqft Built 2004
Raw Value $286,945
Adjusted Value $5,122,127

Adjusted +$4,894,768 for 20,272 sqft more living space and +$607 for being newer and -$60,193 for no garage. Net adjustment: +$4,835,182.

The Neighborhood

Subdivision comparison data is not available for this property.

Tax Analysis

The estimated annual property tax is $60,506 across all districts. With a homestead exemption claimed, that drops to $58,634 — saving $1,872 per year. That's $4,886 per month a buyer should budget. The assessed value increased +28.4%. This increase gives a protest opportunity score of 100 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$30,033
Round RockCity0.3720%$12,510
Williamson CountyCounty0.3694%$12,424
Austin Community Collegespecial0.1034%$3,477
Williamson County FM/RdCounty0.0443%$1,491
Upper Brushy Creek WCIDWater0.0170%$572
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$60,506
100 / 100

There may be a strong case to protest this appraisal.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $5,011,037 would pay approximately $31,279 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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