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2021 N MAYS ST, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed13,410 sqftBuilt 1978

Property at a Glance

This home is estimated between $3,036,076 and $3,140,743, with a best estimate of $3,133,830.

Estimated Value Range

$3,036,076 $3,140,743
Best Estimate
$3,133,830
WCAD Value
$2,687,170
Low Confidence

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

There are 5 comparable properties within range, but none are in R20MS - Neighborhood Shop.strip-East Round Rock. The estimated range of $3,036,076 and $3,140,743 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 2,035 sqft Built 1998
Raw Value $347,700
Adjusted Value $3,036,076

Adjusted +$2,746,546 for 11,375 sqft more living space and +$2,023 for being newer and -$60,193 for no garage. Net adjustment: +$2,688,376.

3 bed 2 bath 1,671 sqft Built 2000
Raw Value $318,178
Adjusted Value $3,094,646

Adjusted +$2,834,436 for 11,739 sqft more living space and +$2,225 for being newer and -$60,193 for no garage. Net adjustment: +$2,776,468.

3 bed 2 bath 1,344 sqft Built 1998
Raw Value $285,522
Adjusted Value $3,140,743

Adjusted +$2,913,391 for 12,066 sqft more living space and +$2,023 for being newer and -$60,193 for no garage. Net adjustment: +$2,855,221.

3 bed 2 bath 1,386 sqft Built 2000
Raw Value $288,548
Adjusted Value $3,133,830

Adjusted +$2,903,250 for 12,024 sqft more living space and +$2,225 for being newer and -$60,193 for no garage. Net adjustment: +$2,845,282.

3 bed 2 bath 1,380 sqft Built 2000
Raw Value $291,963
Adjusted Value $3,138,694

Adjusted +$2,904,699 for 12,030 sqft more living space and +$2,225 for being newer and -$60,193 for no garage. Net adjustment: +$2,846,731.

The Neighborhood

Subdivision comparison data is not available for this property.

Tax Analysis

The estimated annual property tax is $48,350 across all districts. With a homestead exemption claimed, that drops to $46,603 — saving $1,747 per year. That's $3,884 per month a buyer should budget. The assessed value increased +3.1%. This increase gives a protest opportunity score of 65 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$23,999
Round RockCity0.3720%$9,996
Williamson CountyCounty0.3694%$9,928
Austin Community Collegespecial0.1034%$2,779
Williamson County FM/RdCounty0.0443%$1,191
Upper Brushy Creek WCIDWater0.0170%$457
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$48,350
65 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $3,133,830 would pay approximately $19,561 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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