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1644 DIANA DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,077 sqftBuilt 1999

Property at a Glance

This home is estimated between $162,121 and $419,881, with a best estimate of $226,178. That places the property below the R655498G - Spring Ridge median of $314,073, in a neighborhood that declined 8.5% over the past year.

Estimated Value Range

$162,121 $419,881
Best Estimate
$226,178
WCAD Value
$347,711
High Confidence

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

Based on 5 comparable properties in R655498G - Spring Ridge, this home's estimated market value is between $162,121 and $419,881. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1610 DIANA DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,778 sqft Built 1999
Raw Value $311,149
Adjusted Value $162,121

Adjusted -$149,028 for 701 sqft less living space. Net adjustment: -$149,028.

1601 DIANA DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,122 sqft Built 1998
Raw Value $424,873
Adjusted Value $419,881

Adjusted -$9,567 for 45 sqft less living space and +$4,575 for being newer. Net adjustment: -$4,992.

1630 DIANA DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,597 sqft Built 1999
Raw Value $312,235
Adjusted Value $201,686

Adjusted -$110,549 for 520 sqft less living space. Net adjustment: -$110,549.

1617 DIANA DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,352 sqft Built 1998
Raw Value $285,620
Adjusted Value $231,732

Adjusted -$58,463 for 275 sqft less living space and +$4,575 for being newer. Net adjustment: -$53,888.

1620 DIANA DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,323 sqft Built 1999
Raw Value $278,476
Adjusted Value $226,178

Adjusted -$52,298 for 246 sqft less living space. Net adjustment: -$52,298.

The Neighborhood

This home is valued 10.7% above the R655498G - Spring Ridge median of $314,073. With 108 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.5% over the past year.

R655498G - Spring Ridge

typical
108 Properties
$314,073 Median Value
-8.5% YoY Change
0% Have Pool
99% Have Garage
This Home
$347,711
Median
$314,073

This home is +10.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,256 across all districts. With a homestead exemption claimed, that drops to $4,942 — saving $1,314 per year. That's $412 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%$3,105
Round RockCity0.3720%$1,293
Williamson CountyCounty0.3694%$1,285
Austin Community Collegespecial0.1034%$360
Williamson County FM/RdCounty0.0443%$154
Upper Brushy Creek WCIDWater0.0170%$59
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,256

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $226,178 would pay approximately $1,412 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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