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15527 RR 620 N, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed3,480 sqftBuilt 1984

Property at a Glance

This home is estimated between $568,119 and $1,266,663, with a best estimate of $1,070,989. That places the property below the R30IS - Storage Warehouse-west Round Rock median of $1,125,302, in a neighborhood that appreciated 11.8% over the past year.

Estimated Value Range

$568,119 $1,266,663
Best Estimate
$1,070,989
WCAD Value
$1,257,871
Low Confidence

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

There are 5 comparable properties within range, but none are in R30IS - Storage Warehouse-west Round Rock. The estimated range of $568,119 and $1,266,663 should be treated as a rough guide.

Comparable Properties (5)

3 bed 3,738 sqft Built 1979
Raw Value $1,138,731
Adjusted Value $1,035,189

Adjusted -$43,349 for 258 sqft less living space and -$60,193 for no garage. Net adjustment: -$103,542.

3 bed 2,935 sqft Built 1965
Raw Value $979,418
Adjusted Value $1,070,989

Adjusted +$91,571 for 545 sqft more living space. Net adjustment: +$91,571.

15405 RR 620, AUSTIN, TX 78717
0.00 mi 89% similar
3 bed 2,600 sqft Built 1984
Raw Value $1,025,801
Adjusted Value $1,173,659

Adjusted +$147,858 for 880 sqft more living space. Net adjustment: +$147,858.

RR 620, AUSTIN, TX 78717
0.00 mi 78% similar
3 bed 2,811 sqft Built 1955
Raw Value $1,154,258
Adjusted Value $1,266,663

Adjusted +$112,405 for 669 sqft more living space. Net adjustment: +$112,405.

15615 RM 620, AUSTIN, TX 78717
0.00 mi 76% similar
3 bed 2 bath 3,280 sqft Built 1964
Raw Value $534,515
Adjusted Value $568,119

Adjusted +$33,604 for 200 sqft more living space. Net adjustment: +$33,604.

The Neighborhood

This home is valued 11.8% above the R30IS - Storage Warehouse-west Round Rock median of $1,125,302. With 11 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 11.8% over the past year.

R30IS - Storage Warehouse-west Round Rock

typical
11 Properties
$1,125,302 Median Value
+11.8% YoY Change
0% Have Pool
0% Have Garage
This Home
$1,257,871
Median
$1,125,302

This home is +11.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $19,211 across all districts. With a homestead exemption claimed, that drops to $17,728 — saving $1,483 per year. That's $1,477 per month a buyer should budget. The assessed value increased +10.1% vs the subdivision average of +11.8%. This increase gives a protest opportunity score of 35 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$11,234
Williamson CountyCounty0.3694%$4,647
Austin Community Collegespecial0.1034%$1,301
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$1,258
Williamson County FM/RdCounty0.0443%$558
Upper Brushy Creek WCIDWater0.0170%$214
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5273%$19,211
35 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,070,989 would pay approximately $6,685 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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