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

3339 COLUMBUS WAY, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath2,096 sqftBuilt 2019

Property at a Glance

This home is estimated between $475,338 and $694,443, with a best estimate of $579,652. 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

$475,338 $694,443
Best Estimate
$579,652
WCAD Value
$604,681
Low Confidence

Based on 5 comparable properties(2 in the same subdivision)

There are 5 comparable properties within range, but few are in R491607C - PALOMA LAKE DREES /TAYLOR. The estimated range of $475,338 and $694,443 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 1,998 sqft Built 2012
Raw Value $471,400
Adjusted Value $475,338

Adjusted +$22,862 for 98 sqft more living space and -$18,924 for being older. Net adjustment: +$3,938.

3036 MAGELLAN WAY, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
5 bed 4 bath 2,332 sqft Built 2015
Raw Value $645,521
Adjusted Value $579,652

Adjusted -$55,055 for 236 sqft less living space and -$10,814 for being older. Net adjustment: -$65,869.

2723 MARIPOSA WAY, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,829 sqft Built 2015
Raw Value $565,668
Adjusted Value $617,140

Adjusted +$62,286 for 267 sqft more living space and -$10,814 for being older. Net adjustment: +$51,472.

4 bed 3 bath 1,870 sqft Built 2016
Raw Value $486,717
Adjusted Value $531,329

Adjusted +$52,722 for 226 sqft more living space and -$8,110 for being older. Net adjustment: +$44,612.

4 bed 2,123 sqft Built 2019
Raw Value $700,742
Adjusted Value $694,443

Adjusted -$6,299 for 27 sqft less living space. Net adjustment: -$6,299.

The Neighborhood

This home is valued 4.4% above the R491607C - PALOMA LAKE DREES /TAYLOR median of $579,346. With 431 homes in the subdivision, the property sits in the upper tier. 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
$604,681
Median
$579,346

This home is +4.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,783 across all districts. With a homestead exemption claimed, that drops to $10,421 — saving $1,362 per year. That's $868 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%$5,400
Paloma Lakes MUD #2MUD0.4215%$2,549
Williamson CountyCounty0.3694%$2,234
Austin Community Collegespecial0.1034%$625
Williamson County ESD #9 - Round RockESD0.0999%$604
Williamson County FM/RdCounty0.0443%$268
Upper Brushy Creek WCIDWater0.0170%$103
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9487%$11,783

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $579,652 would pay approximately $3,618 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