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105 SUNSET DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath2,352 sqftBuilt 1955

Property at a Glance

This home is estimated between $410,639 and $481,759, with a best estimate of $425,254. That places the property above the R504464I - North Park Addition median of $299,497, in a neighborhood that declined 0.9% over the past year.

Estimated Value Range

$410,639 $481,759
Best Estimate
$425,254
WCAD Value
$378,652
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R504464I - North Park Addition. The estimated range of $410,639 and $481,759 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 1,884 sqft Built 1970
Raw Value $379,486
Adjusted Value $445,543

Adjusted +$95,618 for 468 sqft more living space and -$29,561 for being older. Net adjustment: +$66,057.

3 bed 2 bath 2,006 sqft Built 1975
Raw Value $379,361
Adjusted Value $410,639

Adjusted +$70,692 for 346 sqft more living space and -$39,414 for being older. Net adjustment: +$31,278.

3 bed 2 bath 1,830 sqft Built 1983
Raw Value $373,783
Adjusted Value $425,254

Adjusted +$106,651 for 522 sqft more living space and -$55,180 for being older. Net adjustment: +$51,471.

3 bed 2 bath 1,670 sqft Built 1978
Raw Value $319,246
Adjusted Value $413,260

Adjusted +$139,341 for 682 sqft more living space and -$45,327 for being older. Net adjustment: +$94,014.

3 bed 2 bath 1,447 sqft Built 1970
Raw Value $326,418
Adjusted Value $481,759

Adjusted +$184,902 for 905 sqft more living space and -$29,561 for being older. Net adjustment: +$155,341.

The Neighborhood

This home is valued 26.4% above the R504464I - North Park Addition median of $299,497. With 23 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 0.9% over the past year.

R504464I - North Park Addition

above average
23 Properties
$299,497 Median Value
-0.9% YoY Change
4% Have Pool
35% Have Garage
This Home
$378,652
Median
$299,497

This home is +26.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,813 across all districts. With a homestead exemption claimed, that drops to $5,493 — saving $1,320 per year. That's $458 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%$3,382
Round RockCity0.3720%$1,409
Williamson CountyCounty0.3694%$1,399
Austin Community Collegespecial0.1034%$392
Williamson County FM/RdCounty0.0443%$168
Upper Brushy Creek WCIDWater0.0170%$64
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,813

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $425,254 would pay approximately $2,654 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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