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306 SUNSET DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed1 bath1,713 sqftBuilt 1979

Property at a Glance

This home is estimated between $333,616 and $368,520, with a best estimate of $348,231. 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

$333,616 $368,520
Best Estimate
$348,231
WCAD Value
$347,419
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 $333,616 and $368,520 should be treated as a rough guide.

Comparable Properties (5)

3 bed 1 bath 1,667 sqft Built 1975
Raw Value $341,610
Adjusted Value $365,126

Adjusted +$9,398 for 46 sqft more living space and +$7,883 for being newer and +$6,235 for having a pool. Net adjustment: +$23,516.

3 bed 2 bath 1,670 sqft Built 1978
Raw Value $319,246
Adjusted Value $336,237

Adjusted +$8,785 for 43 sqft more living space and +$1,971 for being newer and +$6,235 for having a pool. Net adjustment: +$16,991.

3 bed 2 bath 1,830 sqft Built 1983
Raw Value $373,783
Adjusted Value $348,231

Adjusted -$23,904 for 117 sqft less living space and -$7,883 for being older and +$6,235 for having a pool. Net adjustment: -$25,552.

3 bed 2 bath 2,006 sqft Built 1975
Raw Value $379,361
Adjusted Value $333,616

Adjusted -$59,863 for 293 sqft less living space and +$7,883 for being newer and +$6,235 for having a pool. Net adjustment: -$45,745.

3 bed 2 bath 1,884 sqft Built 1970
Raw Value $379,486
Adjusted Value $368,520

Adjusted -$34,937 for 171 sqft less living space and +$17,736 for being newer and +$6,235 for having a pool. Net adjustment: -$10,966.

The Neighborhood

This home is valued 16.0% 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
$347,419
Median
$299,497

This home is +16.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $5,789 across all districts. With a homestead exemption claimed, that drops to $4,479 — saving $1,310 per year. That's $373 per month a buyer should budget. The assessed value increased +7.4% vs the subdivision average of -0.9%. This above-average increase gives a protest opportunity score of 47 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$2,873
Round RockCity0.3720%$1,197
Williamson CountyCounty0.3694%$1,189
Austin Community Collegespecial0.1034%$333
Williamson County FM/RdCounty0.0443%$143
Upper Brushy Creek WCIDWater0.0170%$55
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,789
47 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $348,231 would pay approximately $2,174 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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