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

1830 N MAYS ST, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed9,394 sqftBuilt 1985

Property at a Glance

This home is estimated between $1,792,153 and $2,471,213, with a best estimate of $2,253,843. That places the property above the R20MR - Retail Store-e Round Rock median of $1,171,348, in a neighborhood that appreciated 4.0% over the past year.

Estimated Value Range

$1,792,153 $2,471,213
Best Estimate
$2,253,843
WCAD Value
$1,759,612
Low Confidence

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

There are 5 comparable properties within range, but none are in R20MR - Retail Store-e Round Rock. The estimated range of $1,792,153 and $2,471,213 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 4,798 sqft Built 1992
Raw Value $681,720
Adjusted Value $1,792,153

Adjusted +$1,109,725 for 4,596 sqft more living space and +$708 for being newer. Net adjustment: +$1,110,433.

3 bed 2 bath 2,665 sqft Built 1993
Raw Value $735,905
Adjusted Value $2,301,269

Adjusted +$1,624,748 for 6,729 sqft more living space and +$809 for being newer and -$60,193 for no garage. Net adjustment: +$1,565,364.

3 bed 2 bath 1,878 sqft Built 1983
Raw Value $656,642
Adjusted Value $2,471,213

Adjusted +$1,814,773 for 7,516 sqft more living space and -$202 for being older. Net adjustment: +$1,814,571.

3 bed 2 bath 1,306 sqft Built 1984
Raw Value $286,178
Adjusted Value $2,178,769

Adjusted +$1,952,885 for 8,088 sqft more living space and -$101 for being older and -$60,193 for no garage. Net adjustment: +$1,892,591.

3 bed 2 bath 1,182 sqft Built 1987
Raw Value $331,009
Adjusted Value $2,253,843

Adjusted +$1,982,825 for 8,212 sqft more living space and +$202 for being newer and -$60,193 for no garage. Net adjustment: +$1,922,834.

The Neighborhood

This home is valued 50.2% above the R20MR - Retail Store-e Round Rock median of $1,171,348. With 9 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 4.0% over the past year.

R20MR - Retail Store-e Round Rock

outlier high
9 Properties
$1,171,348 Median Value
+4.0% YoY Change
0% Have Pool
0% Have Garage
This Home
$1,759,612
Median
$1,171,348

This home is +50.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $31,660 across all districts. With a homestead exemption claimed, that drops to $30,085 — saving $1,575 per year. That's $2,507 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%$15,715
Round RockCity0.3720%$6,546
Williamson CountyCounty0.3694%$6,501
Austin Community Collegespecial0.1034%$1,819
Williamson County FM/RdCounty0.0443%$780
Upper Brushy Creek WCIDWater0.0170%$299
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$31,660

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $2,253,843 would pay approximately $14,068 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