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

1209 MAYS ST S, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath2,564 sqftBuilt 1977

Property at a Glance

This home is estimated between $415,054 and $907,856, with a best estimate of $543,166. That places the property above the R605477I - South Park, Southern Terrace, Cushing PA median of $311,935, in a neighborhood that appreciated 0.3% over the past year.

Estimated Value Range

$415,054 $907,856
Best Estimate
$543,166
WCAD Value
$324,210
Low Confidence

Based on 5 comparable properties(1 in the same subdivision)

There are 5 comparable properties within range, but few are in R605477I - South Park, Southern Terrace, Cushing PA. The estimated range of $415,054 and $907,856 should be treated as a rough guide.

Comparable Properties (5)

1205 MAYS ST S, ROUND ROCK, TX 78664
0.00 mi 92% similar Same subdivision
3 bed 2 bath 1,563 sqft Built 1975
Raw Value $403,479
Adjusted Value $543,166

Adjusted +$205,270 for 1,001 sqft more living space and +$5,153 for being newer and -$70,736 for no garage. Net adjustment: +$139,687.

3 bed 1,892 sqft Built 1965
Raw Value $739,137
Adjusted Value $907,856

Adjusted +$137,803 for 672 sqft more living space and +$30,916 for being newer. Net adjustment: +$168,719.

4 bed 2 bath 1,960 sqft Built 1981
Raw Value $613,203
Adjusted Value $726,757

Adjusted +$123,859 for 604 sqft more living space and -$10,305 for being older. Net adjustment: +$113,554.

3 bed 2 bath 1,469 sqft Built 1979
Raw Value $275,472
Adjusted Value $424,129

Adjusted +$224,546 for 1,095 sqft more living space and -$5,153 for being older and -$70,736 for no garage. Net adjustment: +$148,657.

3 bed 2 bath 1,524 sqft Built 1981
Raw Value $282,828
Adjusted Value $415,054

Adjusted +$213,267 for 1,040 sqft more living space and -$10,305 for being older and -$70,736 for no garage. Net adjustment: +$132,226.

The Neighborhood

This home is valued 3.9% above the R605477I - South Park, Southern Terrace, Cushing PA median of $311,935. With 125 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 0.3% over the past year.

R605477I - South Park, Southern Terrace, Cushing PA

typical
125 Properties
$311,935 Median Value
+0.3% YoY Change
2% Have Pool
61% Have Garage
This Home
$324,210
Median
$311,935

This home is +3.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $4,200 across all districts. With a homestead exemption claimed, that drops to $2,906 — saving $1,294 per year. That's $242 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%$2,085
Round RockCity0.3720%$868
Williamson CountyCounty0.3694%$862
Austin Community Collegespecial0.1034%$241
Williamson County FM/RdCounty0.0443%$103
Upper Brushy Creek WCIDWater0.0170%$40
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$4,200

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $543,166 would pay approximately $3,390 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