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2900 DIEGO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath1,690 sqftBuilt 2018

Property at a Glance

This home is estimated between $348,820 and $425,269, with a best estimate of $359,201. 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

$348,820 $425,269
Best Estimate
$359,201
WCAD Value
$500,407
Low Confidence

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

There are 5 comparable properties within range, but few are in R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN. The estimated range of $348,820 and $425,269 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 1,706 sqft Built 2017
Raw Value $347,933
Adjusted Value $348,820

Adjusted -$3,489 for 16 sqft less living space and +$4,376 for being newer. Net adjustment: +$887.

2930 DIEGO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,847 sqft Built 2017
Raw Value $413,193
Adjusted Value $383,332

Adjusted -$34,237 for 157 sqft less living space and +$4,376 for being newer. Net adjustment: -$29,861.

3 bed 2 bath 1,791 sqft Built 2015
Raw Value $368,099
Adjusted Value $359,201

Adjusted -$22,025 for 101 sqft less living space and +$13,127 for being newer. Net adjustment: -$8,898.

3 bed 2 bath 1,801 sqft Built 2015
Raw Value $367,178
Adjusted Value $356,099

Adjusted -$24,206 for 111 sqft less living space and +$13,127 for being newer. Net adjustment: -$11,079.

4 bed 2 bath 2,010 sqft Built 2013
Raw Value $473,173
Adjusted Value $425,269

Adjusted -$69,783 for 320 sqft less living space and +$21,879 for being newer. Net adjustment: -$47,904.

The Neighborhood

This home is in line with the R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN median of $499,831. Note that values in this subdivision declined 1.7% over the past year.

R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN

typical
695 Properties
$499,831 Median Value
-1.7% YoY Change
1% Have Pool
100% Have Garage
This Home
$500,407
Median
$499,831

This home is +0.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,506 across all districts. With a homestead exemption claimed, that drops to $8,163 — saving $1,343 per year. That's $680 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%$4,469
Paloma Lakes MUD #1MUD0.3725%$1,864
Williamson CountyCounty0.3694%$1,849
Austin Community Collegespecial0.1034%$517
Williamson County ESD #9 - Round RockESD0.0999%$500
Williamson County FM/RdCounty0.0443%$222
Upper Brushy Creek WCIDWater0.0170%$85
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8997%$9,506

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $359,201 would pay approximately $2,242 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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