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

1803 TONKAWA TRL, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath2,136 sqftBuilt 1980

Property at a Glance

This home is estimated between $179,578 and $475,746, with a best estimate of $374,701. That places the property below the R202681C - Tonkawa & Oak Springs median of $851,894, in a neighborhood that appreciated 3.7% over the past year.

Estimated Value Range

$179,578 $475,746
Best Estimate
$374,701
WCAD Value
$735,610
Low Confidence

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

There are 5 comparable properties within range, but none are in R202681C - Tonkawa & Oak Springs. The estimated range of $179,578 and $475,746 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 2,168 sqft Built 1984
Raw Value $419,766
Adjusted Value $378,557

Adjusted -$11,111 for 32 sqft less living space and -$30,098 for being older. Net adjustment: -$41,209.

3 bed 2 bath 1,777 sqft Built 1984
Raw Value $381,193
Adjusted Value $475,746

Adjusted +$124,651 for 359 sqft more living space and -$30,098 for being older. Net adjustment: +$94,553.

3 bed 2 bath 2,124 sqft Built 2004
Raw Value $551,121
Adjusted Value $374,701

Adjusted +$4,167 for 12 sqft more living space and -$180,587 for being older. Net adjustment: -$176,420.

3 bed 2 bath 2,187 sqft Built 2003
Raw Value $472,820
Adjusted Value $282,049

Adjusted -$17,708 for 51 sqft less living space and -$173,063 for being older. Net adjustment: -$190,771.

3 bed 2 bath 2,228 sqft Built 2002
Raw Value $377,060
Adjusted Value $179,578

Adjusted -$31,944 for 92 sqft less living space and -$165,538 for being older. Net adjustment: -$197,482.

The Neighborhood

This home is valued 13.7% below the R202681C - Tonkawa & Oak Springs median of $851,894. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 3.7% over the past year.

R202681C - Tonkawa & Oak Springs

typical
154 Properties
$851,894 Median Value
+3.7% YoY Change
7% Have Pool
92% Have Garage
This Home
$735,610
Median
$851,894

This home is -13.7% below the subdivision median.

Tax Analysis

The estimated annual property tax is $10,861 across all districts. With a homestead exemption claimed, that drops to $9,480 — saving $1,381 per year. That's $790 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%$6,351
Williamson CountyCounty0.3694%$2,627
Austin Community Collegespecial0.1034%$735
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$711
Williamson County FM/RdCounty0.0443%$315
Upper Brushy Creek WCIDWater0.0170%$121
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5273%$10,861

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $374,701 would pay approximately $2,339 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