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1646 DIANA DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath823 sqftBuilt 2000

Property at a Glance

This home is estimated between $176,754 and $370,457, with a best estimate of $323,404. That places the property above the R655498G - Spring Ridge median of $314,073, in a neighborhood that declined 8.5% over the past year.

Estimated Value Range

$176,754 $370,457
Best Estimate
$323,404
WCAD Value
$308,927
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 $176,754 and $370,457. 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 $370,457

Adjusted -$63,566 for 299 sqft less living space and +$9,150 for being newer. Net adjustment: -$54,416.

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 $182,308

Adjusted -$112,462 for 529 sqft less living space and +$9,150 for being newer. Net adjustment: -$103,312.

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 $176,754

Adjusted -$106,297 for 500 sqft less living space and +$4,575 for being newer. Net adjustment: -$101,722.

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 $323,404

Adjusted -$26,574 for 125 sqft less living space and +$4,575 for being newer. Net adjustment: -$21,999.

1600 DIANA DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,017 sqft Built 1999
Raw Value $389,645
Adjusted Value $352,977

Adjusted -$41,243 for 194 sqft less living space and +$4,575 for being newer. Net adjustment: -$36,668.

The Neighborhood

This home is valued 1.6% below the R655498G - Spring Ridge median of $314,073. That positions it competitively for buyers comparing within the neighborhood. 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
$308,927
Median
$314,073

This home is -1.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,558 across all districts. With a homestead exemption claimed, that drops to $4,251 — saving $1,307 per year. That's $354 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%$2,759
Round RockCity0.3720%$1,149
Williamson CountyCounty0.3694%$1,141
Austin Community Collegespecial0.1034%$319
Williamson County FM/RdCounty0.0443%$137
Upper Brushy Creek WCIDWater0.0170%$53
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,558

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $323,404 would pay approximately $2,019 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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