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

2600 N A W GRIMES BLVD, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath5,296 sqftBuilt 1980

Property at a Glance

This home is estimated between $136,352 and $1,030,395, with a best estimate of $270,219. That places the property below the R427578G - Hidden Acres & Sec 2 median of $412,870, in a neighborhood that declined 4.2% over the past year.

Estimated Value Range

$136,352 $1,030,395
Best Estimate
$270,219
WCAD Value
$876,512
Low Confidence

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

There are 5 comparable properties within range, but none are in R427578G - Hidden Acres & Sec 2. The estimated range of $136,352 and $1,030,395 should be treated as a rough guide.

Comparable Properties (5)

3 bed 8,000 sqft Built 1986
Raw Value $1,070,738
Adjusted Value $423,268

Adjusted -$575,051 for 2,704 sqft less living space and -$72,419 for being older. Net adjustment: -$647,470.

KIPHEN RD, ROUND ROCK, TX 78665
0.19 mi 75% similar
3 bed 10,550 sqft Built 1985
Raw Value $1,337,570
Adjusted Value $159,869

Adjusted -$1,117,352 for 5,254 sqft less living space and -$60,349 for being older. Net adjustment: -$1,177,701.

3 bed 13,500 sqft Built 1980
Raw Value $1,881,071
Adjusted Value $136,352

Adjusted -$1,744,719 for 8,204 sqft less living space. Net adjustment: -$1,744,719.

3 bed 2 bath 3,930 sqft Built 1977
Raw Value $703,682
Adjusted Value $1,030,395

Adjusted +$290,503 for 1,366 sqft more living space and +$36,210 for being newer. Net adjustment: +$326,713.

3 bed 10,063 sqft Built 1984
Raw Value $1,332,281
Adjusted Value $270,219

Adjusted -$1,013,783 for 4,767 sqft less living space and -$48,279 for being older. Net adjustment: -$1,062,062.

The Neighborhood

This home is valued 112.3% above the R427578G - Hidden Acres & Sec 2 median of $412,870. With 19 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 4.2% over the past year.

R427578G - Hidden Acres & Sec 2

outlier high
19 Properties
$412,870 Median Value
-4.2% YoY Change
26% Have Pool
84% Have Garage
This Home
$876,512
Median
$412,870

This home is +112.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $15,771 across all districts. With a homestead exemption claimed, that drops to $14,359 — saving $1,412 per year. That's $1,197 per month a buyer should budget. The assessed value increased +3.0% vs the subdivision average of -4.2%. This above-average increase gives a protest opportunity score of 46 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$7,828
Round RockCity0.3720%$3,261
Williamson CountyCounty0.3694%$3,238
Austin Community Collegespecial0.1034%$906
Williamson County FM/RdCounty0.0443%$389
Upper Brushy Creek WCIDWater0.0170%$149
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$15,771
46 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $270,219 would pay approximately $1,687 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