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1618 DIANA DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,034 sqftBuilt 2000

Property at a Glance

This home is estimated between $197,120 and $415,315, with a best estimate of $227,165. 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

$197,120 $415,315
Best Estimate
$227,165
WCAD Value
$352,935
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 $197,120 and $415,315. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

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 $415,315

Adjusted -$18,708 for 88 sqft less living space and +$9,150 for being newer. Net adjustment: -$9,558.

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 $197,120

Adjusted -$119,690 for 563 sqft less living space and +$4,575 for being newer. Net adjustment: -$115,115.

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 $227,165

Adjusted -$67,605 for 318 sqft less living space and +$9,150 for being newer. Net adjustment: -$58,455.

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 $221,611

Adjusted -$61,440 for 289 sqft less living space and +$4,575 for being newer. Net adjustment: -$56,865.

1622 DIANA DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 948 sqft Built 1999
Raw Value $345,403
Adjusted Value $368,261

Adjusted +$18,283 for 86 sqft more living space and +$4,575 for being newer. Net adjustment: +$22,858.

The Neighborhood

This home is valued 12.4% 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
$352,935
Median
$314,073

This home is +12.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,350 across all districts. With a homestead exemption claimed, that drops to $5,035 — saving $1,315 per year. That's $420 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%$3,152
Round RockCity0.3720%$1,313
Williamson CountyCounty0.3694%$1,304
Austin Community Collegespecial0.1034%$365
Williamson County FM/RdCounty0.0443%$156
Upper Brushy Creek WCIDWater0.0170%$60
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,350

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $227,165 would pay approximately $1,418 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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