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306 ROUND ROCK AVE, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath2,309 sqftBuilt 1965

Property at a Glance

This home is estimated between $371,863 and $854,759, with a best estimate of $513,602. That places the property below the R20QC - CHURCH- East Round Rock median of $3,933,377, in a neighborhood that appreciated 11.4% over the past year.

Estimated Value Range

$371,863 $854,759
Best Estimate
$513,602
WCAD Value
$9,220,254
Low Confidence

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

There are 5 comparable properties within range, but none are in R20QC - CHURCH- East Round Rock. The estimated range of $371,863 and $854,759 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 2,923 sqft Built 1962
Raw Value $716,116
Adjusted Value $513,602

Adjusted -$148,253 for 614 sqft less living space and -$303 for being older and +$6,235 for having a pool and -$60,193 for no garage. Net adjustment: -$202,514.

3 bed 2 bath 2,056 sqft Built 1985
Raw Value $362,710
Adjusted Value $371,863

Adjusted +$61,088 for 253 sqft more living space and +$2,023 for being newer and +$6,235 for having a pool and -$60,193 for no garage. Net adjustment: +$9,153.

3 bed 1 bath 2,585 sqft Built 1972
Raw Value $974,650
Adjusted Value $854,759

Adjusted -$66,641 for 276 sqft less living space and +$708 for being newer and +$6,235 for having a pool and -$60,193 for no garage. Net adjustment: -$119,891.

3 bed 2 bath 1,934 sqft Built 1986
Raw Value $508,486
Adjusted Value $547,197

Adjusted +$90,545 for 375 sqft more living space and +$2,124 for being newer and +$6,235 for having a pool and -$60,193 for no garage. Net adjustment: +$38,711.

3 bed 2 bath 1,647 sqft Built 1976
Raw Value $340,594
Adjusted Value $447,592

Adjusted +$159,843 for 662 sqft more living space and +$1,113 for being newer and +$6,235 for having a pool and -$60,193 for no garage. Net adjustment: +$106,998.

The Neighborhood

This home is valued 134.4% above the R20QC - CHURCH- East Round Rock median of $3,933,377. With 8 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 11.4% over the past year.

R20QC - CHURCH- East Round Rock

outlier high
8 Properties
$3,933,377 Median Value
+11.4% YoY Change
25% Have Pool
38% Have Garage
This Home
$9,220,254
Median
$3,933,377

This home is +134.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $165,898 across all districts. With a homestead exemption claimed, that drops to $162,944 — saving $2,954 per year. That's $13,579 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%$82,346
Round RockCity0.3720%$34,299
Williamson CountyCounty0.3694%$34,064
Austin Community Collegespecial0.1034%$9,534
Williamson County FM/RdCounty0.0443%$4,087
Upper Brushy Creek WCIDWater0.0170%$1,567
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$165,898

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $513,602 would pay approximately $3,206 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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