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

16815 MOUSE TRAP DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath2,575 sqftBuilt 1995

Property at a Glance

This home is estimated between $533,017 and $1,181,918, with a best estimate of $1,011,805. That places the property above the R224599C - Cat Hollow Sec A Ph 3 median of $778,705, in a neighborhood that appreciated 6.9% over the past year.

Estimated Value Range

$533,017 $1,181,918
Best Estimate
$1,011,805
WCAD Value
$659,708
High Confidence

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

Based on 5 comparable properties in R224599C - Cat Hollow Sec A Ph 3, this home's estimated market value is between $533,017 and $1,181,918. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

16928 MOUSE TRAP DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,751 sqft Built 1995
Raw Value $882,250
Adjusted Value $1,181,918

Adjusted +$299,668 for 824 sqft more living space. Net adjustment: +$299,668.

16927 MOUSE TRAP DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,193 sqft Built 1996
Raw Value $995,698
Adjusted Value $1,134,955

Adjusted +$138,924 for 382 sqft more living space and +$333 for being newer. Net adjustment: +$139,257.

16808 MOUSE TRAP DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 3,180 sqft Built 1996
Raw Value $752,707
Adjusted Value $533,017

Adjusted -$220,023 for 605 sqft less living space and +$333 for being newer. Net adjustment: -$219,690.

16919 MOUSE TRAP DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,991 sqft Built 1996
Raw Value $764,589
Adjusted Value $920,950

Adjusted +$212,386 for 584 sqft more living space and +$333 for being newer and -$56,358 for no pool. Net adjustment: +$156,361.

16934 MOUSE TRAP DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,291 sqft Built 1996
Raw Value $908,188
Adjusted Value $1,011,805

Adjusted +$103,284 for 284 sqft more living space and +$333 for being newer. Net adjustment: +$103,617.

The Neighborhood

This home is valued 15.3% below the R224599C - Cat Hollow Sec A Ph 3 median of $778,705. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 6.9% over the past year.

R224599C - Cat Hollow Sec A Ph 3

below average
143 Properties
$778,705 Median Value
+6.9% YoY Change
4% Have Pool
100% Have Garage
This Home
$659,708
Median
$778,705

This home is -15.3% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,003 across all districts. With a homestead exemption claimed, that drops to $10,637 — saving $1,366 per year. That's $886 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%$5,600
Brushy Creek MUDMUD0.3868%$2,426
Williamson CountyCounty0.3694%$2,317
Austin Community Collegespecial0.1034%$648
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$627
Williamson County FM/RdCounty0.0443%$278
Upper Brushy Creek WCIDWater0.0170%$107
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9141%$12,003

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,011,805 would pay approximately $6,316 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