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

3880 WILLIE MAYS LN, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath885 sqftBuilt 2001

Property at a Glance

This home is estimated between $266,063 and $325,018, with a best estimate of $317,040. That places the property below the R454400F - Ryan's Crossing Sec 1 Thru 6 median of $339,919, in a neighborhood that declined 9.3% over the past year.

Estimated Value Range

$266,063 $325,018
Best Estimate
$317,040
WCAD Value
$326,516
High Confidence

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

Based on 5 comparable properties in R454400F - Ryan's Crossing Sec 1 Thru 6, this home's estimated market value is between $266,063 and $325,018. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3809 WILLIE MAYS LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,107 sqft Built 2001
Raw Value $340,367
Adjusted Value $298,999

Adjusted -$41,368 for 222 sqft less living space. Net adjustment: -$41,368.

3842 WILLIE MAYS LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,295 sqft Built 2001
Raw Value $342,464
Adjusted Value $266,063

Adjusted -$76,401 for 410 sqft less living space. Net adjustment: -$76,401.

3876 WILLIE MAYS LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 978 sqft Built 2002
Raw Value $341,396
Adjusted Value $325,018

Adjusted -$17,330 for 93 sqft less living space and +$952 for being newer. Net adjustment: -$16,378.

3884 WILLIE MAYS LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,049 sqft Built 2001
Raw Value $352,960
Adjusted Value $322,400

Adjusted -$30,560 for 164 sqft less living space. Net adjustment: -$30,560.

3840 WILLIE MAYS LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,013 sqft Built 2002
Raw Value $339,940
Adjusted Value $317,040

Adjusted -$23,852 for 128 sqft less living space and +$952 for being newer. Net adjustment: -$22,900.

The Neighborhood

This home is valued 3.9% below the R454400F - Ryan's Crossing Sec 1 Thru 6 median of $339,919. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 9.3% over the past year.

R454400F - Ryan's Crossing Sec 1 Thru 6

typical
567 Properties
$339,919 Median Value
-9.3% YoY Change
1% Have Pool
100% Have Garage
This Home
$326,516
Median
$339,919

This home is -3.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,875 across all districts. With a homestead exemption claimed, that drops to $4,564 — saving $1,311 per year. That's $380 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%$2,916
Round RockCity0.3720%$1,215
Williamson CountyCounty0.3694%$1,206
Austin Community Collegespecial0.1034%$338
Williamson County FM/RdCounty0.0443%$145
Upper Brushy Creek WCIDWater0.0170%$56
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,875

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $317,040 would pay approximately $1,979 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