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99 TWIN RIDGE PKWY, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2,659 sqftBuilt 1909

Property at a Glance

This home is estimated between $504,082 and $978,991, with a best estimate of $693,566. That places the property below the R20EC1 - COUNTRY CLUB / GOLF COURSE - EAST ROUND ROCK median of $901,878, in a neighborhood that appreciated 0.0% over the past year.

Estimated Value Range

$504,082 $978,991
Best Estimate
$693,566
WCAD Value
$901,878
Low Confidence

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

There are 5 comparable properties within range, but none are in R20EC1 - COUNTRY CLUB / GOLF COURSE - EAST ROUND ROCK. The estimated range of $504,082 and $978,991 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 2,808 sqft Built 1920
Raw Value $599,139
Adjusted Value $504,082

Adjusted -$35,977 for 149 sqft less living space and +$1,113 for being newer and -$60,193 for no garage. Net adjustment: -$95,057.

4 bed 4 bath 2,581 sqft Built 1902
Raw Value $922,373
Adjusted Value $880,305

Adjusted +$18,833 for 78 sqft more living space and -$708 for being older and -$60,193 for no garage. Net adjustment: -$42,068.

3 bed 2 bath 2,666 sqft Built 1992
Raw Value $747,054
Adjusted Value $693,566

Adjusted -$1,690 for 7 sqft less living space and +$8,395 for being newer and -$60,193 for no garage. Net adjustment: -$53,488.

3 bed 2 bath 2,955 sqft Built 1993
Raw Value $675,365
Adjusted Value $545,962

Adjusted -$71,471 for 296 sqft less living space and +$8,496 for being newer and -$6,235 for no pool and -$60,193 for no garage. Net adjustment: -$129,403.

4 bed 3 bath 2,617 sqft Built 2001
Raw Value $1,019,738
Adjusted Value $978,991

Adjusted +$10,141 for 42 sqft more living space and +$9,305 for being newer and -$60,193 for no garage. Net adjustment: -$40,747.

The Neighborhood

This home is in line with the R20EC1 - COUNTRY CLUB / GOLF COURSE - EAST ROUND ROCK median of $901,878. The neighborhood appreciated 0.0% over the past year.

R20EC1 - COUNTRY CLUB / GOLF COURSE - EAST ROUND ROCK

typical
5 Properties
$901,878 Median Value
+0.0% YoY Change
0% Have Pool
0% Have Garage
This Home
$901,878
Median
$901,878

This home is +0.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $16,227 across all districts. With a homestead exemption claimed, that drops to $14,810 — saving $1,417 per year. That's $1,234 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%$8,055
Round RockCity0.3720%$3,355
Williamson CountyCounty0.3694%$3,332
Austin Community Collegespecial0.1034%$933
Williamson County FM/RdCounty0.0443%$400
Upper Brushy Creek WCIDWater0.0170%$153
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$16,227

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $693,566 would pay approximately $4,329 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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