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

3021 COLUMBUS LOOP, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath2,968 sqftBuilt 2018

Property at a Glance

This home is estimated between $569,009 and $999,864, with a best estimate of $743,859. That places the property above the R491607C - PALOMA LAKE DREES /TAYLOR median of $579,346, in a neighborhood that declined 5.0% over the past year.

Estimated Value Range

$569,009 $999,864
Best Estimate
$743,859
WCAD Value
$580,757
Low Confidence

Based on 5 comparable properties(1 in the same subdivision)

There are 5 comparable properties within range, but few are in R491607C - PALOMA LAKE DREES /TAYLOR. The estimated range of $569,009 and $999,864 should be treated as a rough guide.

Comparable Properties (5)

2800 LOS ALAMOS CT, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,411 sqft Built 2009
Raw Value $638,252
Adjusted Value $743,859

Adjusted +$129,938 for 557 sqft more living space and -$24,331 for being older. Net adjustment: +$105,607.

4 bed 3 bath 2,302 sqft Built 2016
Raw Value $419,050
Adjusted Value $569,009

Adjusted +$155,366 for 666 sqft more living space and -$5,407 for being older. Net adjustment: +$149,959.

4 bed 3 bath 2,253 sqft Built 2017
Raw Value $835,770
Adjusted Value $999,864

Adjusted +$166,797 for 715 sqft more living space and -$2,703 for being older. Net adjustment: +$164,094.

4 bed 3 bath 1,975 sqft Built 2018
Raw Value $377,228
Adjusted Value $608,878

Adjusted +$231,650 for 993 sqft more living space. Net adjustment: +$231,650.

5 bed 4 bath 2,517 sqft Built 2018
Raw Value $771,669
Adjusted Value $876,879

Adjusted +$105,210 for 451 sqft more living space. Net adjustment: +$105,210.

The Neighborhood

This home is in line with the R491607C - PALOMA LAKE DREES /TAYLOR median of $579,346. Note that values in this subdivision declined 5.0% over the past year.

R491607C - PALOMA LAKE DREES /TAYLOR

typical
431 Properties
$579,346 Median Value
-5.0% YoY Change
0% Have Pool
100% Have Garage
This Home
$580,757
Median
$579,346

This home is +0.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,317 across all districts. With a homestead exemption claimed, that drops to $9,960 — saving $1,357 per year. That's $830 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%$5,187
Paloma Lakes MUD #2MUD0.4215%$2,448
Williamson CountyCounty0.3694%$2,146
Austin Community Collegespecial0.1034%$601
Williamson County ESD #9 - Round RockESD0.0999%$580
Williamson County FM/RdCounty0.0443%$257
Upper Brushy Creek WCIDWater0.0170%$99
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9487%$11,317

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $743,859 would pay approximately $4,643 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