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RR 620, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2,811 sqftBuilt 1955

Property at a Glance

This home is estimated between $857,137 and $1,128,163, with a best estimate of $1,079,681. That places the property above the R30PR - Single Family Conversion-west Round Rock median of $945,717, in a neighborhood that appreciated 6.7% over the past year.

Estimated Value Range

$857,137 $1,128,163
Best Estimate
$1,079,681
WCAD Value
$1,154,258
Medium Confidence

Based on 5 comparable properties(3 in the same subdivision)

Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $857,137 and $1,128,163. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

15605 RR 620 N, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2,935 sqft Built 1965
Raw Value $979,418
Adjusted Value $950,489

Adjusted -$29,940 for 124 sqft less living space and +$1,011 for being newer. Net adjustment: -$28,929.

15509 RR 620 N, AUSTIN, TX 78717
0.00 mi 93% similar Same subdivision
3 bed 3,738 sqft Built 1979
Raw Value $1,138,731
Adjusted Value $857,137

Adjusted -$223,828 for 927 sqft less living space and +$2,427 for being newer and -$60,193 for no garage. Net adjustment: -$281,594.

15409 RR 620, AUSTIN, TX 78717
0.00 mi 86% similar Same subdivision
3 bed 1,804 sqft Built 1950
Raw Value $945,717
Adjusted Value $1,128,163

Adjusted +$243,145 for 1,007 sqft more living space and -$506 for being older and -$60,193 for no garage. Net adjustment: +$182,446.

15405 RR 620, AUSTIN, TX 78717
0.00 mi 79% similar
3 bed 2,600 sqft Built 1984
Raw Value $1,025,801
Adjusted Value $1,079,681

Adjusted +$50,947 for 211 sqft more living space and +$2,933 for being newer. Net adjustment: +$53,880.

3 bed 3,480 sqft Built 1984
Raw Value $1,257,871
Adjusted Value $1,099,271

Adjusted -$161,533 for 669 sqft less living space and +$2,933 for being newer. Net adjustment: -$158,600.

The Neighborhood

This home is valued 22.1% above the R30PR - Single Family Conversion-west Round Rock median of $945,717. With 9 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 6.7% over the past year.

R30PR - Single Family Conversion-west Round Rock

above average
9 Properties
$945,717 Median Value
+6.7% YoY Change
0% Have Pool
33% Have Garage
This Home
$1,154,258
Median
$945,717

This home is +22.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $16,941 across all districts. With a homestead exemption claimed, that drops to $15,486 — saving $1,455 per year. That's $1,291 per month a buyer should budget. The assessed value increased +12.8% vs the subdivision average of +6.7%. This above-average increase gives a protest opportunity score of 66 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$9,907
Williamson CountyCounty0.3694%$4,098
Austin Community Collegespecial0.1034%$1,147
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$1,109
Williamson County FM/RdCounty0.0443%$492
Upper Brushy Creek WCIDWater0.0170%$189
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5273%$16,941
66 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,079,681 would pay approximately $6,739 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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