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

500 CR 117, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed20,460 sqftBuilt 1982

Property at a Glance

This home is estimated between $5,303,799 and $6,752,039, with a best estimate of $5,585,229.

Estimated Value Range

$5,303,799 $6,752,039
Best Estimate
$5,585,229
WCAD Value
$4,775,901
Low Confidence

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

There are 5 comparable properties within range, but none are in R20IV - VEHICLE & BOAT STORAGE. The estimated range of $5,303,799 and $6,752,039 should be treated as a rough guide.

Comparable Properties (5)

3 bed 3,430 sqft Built 1980
Raw Value $1,688,421
Adjusted Value $5,800,191

Adjusted +$4,111,972 for 17,030 sqft more living space and -$202 for being older. Net adjustment: +$4,111,770.

3 bed 6,185 sqft Built 2001
Raw Value $3,243,159
Adjusted Value $6,752,039

Adjusted +$3,446,765 for 14,275 sqft more living space and +$1,922 for being newer and +$60,193 for having a garage. Net adjustment: +$3,508,880.

3 bed 2 bath 2,238 sqft Built 1994
Raw Value $902,799
Adjusted Value $5,303,799

Adjusted +$4,399,786 for 18,222 sqft more living space and +$1,214 for being newer. Net adjustment: +$4,401,000.

3 bed 3,127 sqft Built 1980
Raw Value $1,241,619
Adjusted Value $5,426,550

Adjusted +$4,185,133 for 17,333 sqft more living space and -$202 for being older. Net adjustment: +$4,184,931.

3 bed 5,009 sqft Built 1982
Raw Value $1,794,321
Adjusted Value $5,585,229

Adjusted +$3,730,715 for 15,451 sqft more living space and +$60,193 for having a garage. Net adjustment: +$3,790,908.

The Neighborhood

Subdivision comparison data is not available for this property.

Tax Analysis

The estimated annual property tax is $72,937 across all districts. With a homestead exemption claimed, that drops to $70,804 — saving $2,133 per year. That's $5,900 per month a buyer should budget. The assessed value increased +19.7%. This increase gives a protest opportunity score of 95 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$42,654
Williamson CountyCounty0.3694%$17,644
Austin Community Collegespecial0.1034%$4,938
Williamson County ESD #9 - Round RockESD0.0999%$4,772
Williamson County FM/RdCounty0.0443%$2,117
Upper Brushy Creek WCIDWater0.0170%$812
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5272%$72,937
95 / 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 $5,585,229 would pay approximately $34,863 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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