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3117 DIEGO CV, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath2,097 sqftBuilt 2017

Property at a Glance

This home is estimated between $380,367 and $607,606, with a best estimate of $412,259. That places the property below the R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN median of $499,831, in a neighborhood that declined 1.7% over the past year.

Estimated Value Range

$380,367 $607,606
Best Estimate
$412,259
WCAD Value
$600,433
Low Confidence

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

There are 5 comparable properties within range, but few are in R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN. The estimated range of $380,367 and $607,606 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 2,256 sqft Built 2017
Raw Value $415,041
Adjusted Value $380,367

Adjusted -$34,674 for 159 sqft less living space. Net adjustment: -$34,674.

3365 CATALINA CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
5 bed 3 bath 2,381 sqft Built 2019
Raw Value $678,291
Adjusted Value $607,606

Adjusted -$61,933 for 284 sqft less living space and -$8,752 for being older. Net adjustment: -$70,685.

3364 CATALINA CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 3,218 sqft Built 2019
Raw Value $665,470
Adjusted Value $412,259

Adjusted -$244,459 for 1,121 sqft less living space and -$8,752 for being older. Net adjustment: -$253,211.

4 bed 3 bath 2,197 sqft Built 2018
Raw Value $429,438
Adjusted Value $403,255

Adjusted -$21,807 for 100 sqft less living space and -$4,376 for being older. Net adjustment: -$26,183.

4 bed 3 bath 1,936 sqft Built 2016
Raw Value $373,820
Adjusted Value $413,306

Adjusted +$35,110 for 161 sqft more living space and +$4,376 for being newer. Net adjustment: +$39,486.

The Neighborhood

This home is valued 20.1% above the R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN median of $499,831. With 695 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 1.7% over the past year.

R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN

above average
695 Properties
$499,831 Median Value
-1.7% YoY Change
1% Have Pool
100% Have Garage
This Home
$600,433
Median
$499,831

This home is +20.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,406 across all districts. With a homestead exemption claimed, that drops to $10,045 — saving $1,361 per year. That's $837 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%$5,362
Paloma Lakes MUD #1MUD0.3725%$2,237
Williamson CountyCounty0.3694%$2,218
Austin Community Collegespecial0.1034%$621
Williamson County ESD #9 - Round RockESD0.0999%$600
Williamson County FM/RdCounty0.0443%$266
Upper Brushy Creek WCIDWater0.0170%$102
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8997%$11,406

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $412,259 would pay approximately $2,573 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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