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

4122 GRAND VISTA CIR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath1,914 sqftBuilt 2006

Property at a Glance

This home is estimated between $394,275 and $636,248, with a best estimate of $507,451. That places the property below the R420606C - TERAVISTA R5 median of $646,108, in a neighborhood that appreciated 2.5% over the past year.

Estimated Value Range

$394,275 $636,248
Best Estimate
$507,451
WCAD Value
$654,365
Low Confidence

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

There are 5 comparable properties within range, but none are in R420606C - TERAVISTA R5. The estimated range of $394,275 and $636,248 should be treated as a rough guide.

Comparable Properties (5)

4 bed 2 bath 1,857 sqft Built 2015
Raw Value $549,582
Adjusted Value $508,853

Adjusted +$16,493 for 57 sqft more living space and -$57,222 for being older. Net adjustment: -$40,729.

4 bed 2 bath 2,087 sqft Built 2005
Raw Value $679,947
Adjusted Value $636,248

Adjusted -$50,057 for 173 sqft less living space and +$6,358 for being newer. Net adjustment: -$43,699.

4 bed 2 bath 1,843 sqft Built 2016
Raw Value $550,487
Adjusted Value $507,451

Adjusted +$20,544 for 71 sqft more living space and -$63,580 for being older. Net adjustment: -$43,036.

3 bed 2 bath 1,841 sqft Built 2010
Raw Value $398,585
Adjusted Value $394,275

Adjusted +$21,122 for 73 sqft more living space and -$25,432 for being older. Net adjustment: -$4,310.

3 bed 2 bath 1,834 sqft Built 2002
Raw Value $367,794
Adjusted Value $416,374

Adjusted +$23,148 for 80 sqft more living space and +$25,432 for being newer. Net adjustment: +$48,580.

The Neighborhood

This home is valued 1.3% above the R420606C - TERAVISTA R5 median of $646,108. With 622 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 2.5% over the past year.

R420606C - TERAVISTA R5

typical
622 Properties
$646,108 Median Value
+2.5% YoY Change
1% Have Pool
99% Have Garage
This Home
$654,365
Median
$646,108

This home is +1.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,305 across all districts. With a homestead exemption claimed, that drops to $10,936 — saving $1,369 per year. That's $911 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%$5,740
Williamson County MUD #10MUD0.3875%$2,490
Williamson CountyCounty0.3694%$2,374
Austin Community Collegespecial0.1034%$665
Williamson County ESD #9 - Round RockESD0.0999%$642
Williamson County FM/RdCounty0.0443%$285
Upper Brushy Creek WCIDWater0.0170%$109
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9147%$12,305

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $507,451 would pay approximately $3,167 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