Beta Williamson County, TX only — data and coverage are limited during early access.

11909 SWAN DR, AUSTIN, TX 78750

AUSTIN, 78750 — williamson County

4 bed2 bath1,633 sqftBuilt 1977

Property at a Glance

This home is estimated between $362,576 and $408,131, with a best estimate of $405,585. That places the property below the R353476G - Anderson Mill median of $407,368, in a neighborhood that appreciated 0.2% over the past year.

Estimated Value Range

$362,576 $408,131
Best Estimate
$405,585
WCAD Value
$477,899
High Confidence

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

Based on 5 comparable properties in R353476G - Anderson Mill, this home's estimated market value is between $362,576 and $408,131. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

11904 SWALLOW DR, AUSTIN, TX 78750
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,456 sqft Built 1977
Raw Value $358,808
Adjusted Value $402,753

Adjusted +$43,945 for 177 sqft more living space. Net adjustment: +$43,945.

11906 SWALLOW DR, AUSTIN, TX 78750
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,428 sqft Built 1977
Raw Value $357,192
Adjusted Value $408,088

Adjusted +$50,896 for 205 sqft more living space. Net adjustment: +$50,896.

11902 SWALLOW DR, AUSTIN, TX 78750
0.03 mi 100% similar Same subdivision
3 bed 2 bath 2,069 sqft Built 1977
Raw Value $470,823
Adjusted Value $362,576

Adjusted -$108,247 for 436 sqft less living space. Net adjustment: -$108,247.

11908 SWALLOW DR, AUSTIN, TX 78750
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,513 sqft Built 1977
Raw Value $378,338
Adjusted Value $408,131

Adjusted +$29,793 for 120 sqft more living space. Net adjustment: +$29,793.

11900 SWALLOW DR, AUSTIN, TX 78750
0.04 mi 100% similar Same subdivision
3 bed 2 bath 1,533 sqft Built 1977
Raw Value $380,758
Adjusted Value $405,585

Adjusted +$24,827 for 100 sqft more living space. Net adjustment: +$24,827.

The Neighborhood

This home is valued 17.3% above the R353476G - Anderson Mill median of $407,368. With 1,663 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 0.2% over the past year.

R353476G - Anderson Mill

above average
1,663 Properties
$407,368 Median Value
+0.2% YoY Change
3% Have Pool
95% Have Garage
This Home
$477,899
Median
$407,368

This home is +17.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,919 across all districts. With a homestead exemption claimed, that drops to $8,080 — saving $1,839 per year. That's $673 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%$4,268
AustinCity0.5240%$2,504
Williamson CountyCounty0.3694%$1,766
Anderson Mill Limited Districtspecial0.1243%$594
Austin Community Collegespecial0.1034%$494
Williamson County FM/RdCounty0.0443%$212
Upper Brushy Creek WCIDWater0.0170%$81
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0756%$9,919

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $405,585 would pay approximately $2,532 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.

View full property details