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15605 RR 620 N, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2,935 sqftBuilt 1965

Property at a Glance

This home is estimated between $886,066 and $1,183,187, with a best estimate of $1,128,200. 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

$886,066 $1,183,187
Best Estimate
$1,128,200
WCAD Value
$979,418
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 $886,066 and $1,183,187. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

RR 620, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2,811 sqft Built 1955
Raw Value $1,154,258
Adjusted Value $1,183,187

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

15509 RR 620 N, AUSTIN, TX 78717
0.00 mi 94% similar Same subdivision
3 bed 3,738 sqft Built 1979
Raw Value $1,138,731
Adjusted Value $886,066

Adjusted -$193,888 for 803 sqft less living space and +$1,416 for being newer and -$60,193 for no garage. Net adjustment: -$252,665.

3 bed 3,480 sqft Built 1984
Raw Value $1,257,871
Adjusted Value $1,128,200

Adjusted -$131,593 for 545 sqft less living space and +$1,922 for being newer. Net adjustment: -$129,671.

15405 RR 620, AUSTIN, TX 78717
0.00 mi 86% similar
3 bed 2,600 sqft Built 1984
Raw Value $1,025,801
Adjusted Value $1,108,610

Adjusted +$80,887 for 335 sqft more living space and +$1,922 for being newer. Net adjustment: +$82,809.

15409 RR 620, AUSTIN, TX 78717
0.00 mi 83% similar Same subdivision
3 bed 1,804 sqft Built 1950
Raw Value $945,717
Adjusted Value $1,157,092

Adjusted +$273,085 for 1,131 sqft more living space and -$1,517 for being older and -$60,193 for no garage. Net adjustment: +$211,375.

The Neighborhood

This home is valued 3.6% 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

typical
9 Properties
$945,717 Median Value
+6.7% YoY Change
0% Have Pool
33% Have Garage
This Home
$979,418
Median
$945,717

This home is +3.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $14,958 across all districts. With a homestead exemption claimed, that drops to $13,527 — saving $1,431 per year. That's $1,127 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%$8,747
Williamson CountyCounty0.3694%$3,618
Austin Community Collegespecial0.1034%$1,013
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$979
Williamson County FM/RdCounty0.0443%$434
Upper Brushy Creek WCIDWater0.0170%$167
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5273%$14,958

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,128,200 would pay approximately $7,042 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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