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809 WONDER DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed1,540 sqftBuilt 1935

Property at a Glance

This home is estimated between $142,833 and $500,364, with a best estimate of $430,151. That places the property above the R701575F - OLD TOWN ROUND ROCK median of $319,256, in a neighborhood that appreciated 4.3% over the past year.

Estimated Value Range

$142,833 $500,364
Best Estimate
$430,151
WCAD Value
$409,152
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $142,833 and $500,364. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

1000 WONDER DR, ROUND ROCK, TX 78681
0.00 mi 88% similar Same subdivision
3 bed 1 bath 2,016 sqft Built 1931
Raw Value $540,000
Adjusted Value $430,151

Adjusted -$122,218 for 476 sqft less living space and +$12,369 for being newer. Net adjustment: -$109,849.

909 WONDER DR, ROUND ROCK, TX 78681
0.00 mi 86% similar Same subdivision
3 bed 1 bath 1,160 sqft Built 1930
Raw Value $160,908
Adjusted Value $398,359

Adjusted +$97,569 for 380 sqft more living space and +$15,462 for being newer and +$124,420 for having a garage. Net adjustment: +$237,451.

703 WONDER DR, ROUND ROCK, TX 78681
0.00 mi 64% similar Same subdivision
2 bed 1 bath 1,064 sqft Built 1960
Raw Value $426,984
Adjusted Value $471,894

Adjusted +$122,218 for 476 sqft more living space and -$77,308 for being older. Net adjustment: +$44,910.

707 WONDER DR, ROUND ROCK, TX 78681
0.00 mi 63% similar Same subdivision
2 bed 1 bath 836 sqft Built 1965
Raw Value $287,954
Adjusted Value $500,364

Adjusted +$180,760 for 704 sqft more living space and -$92,770 for being older and +$124,420 for having a garage. Net adjustment: +$212,410.

3 bed 2,946 sqft Built 1969
Raw Value $484,559
Adjusted Value $142,833

Adjusted -$361,006 for 1,406 sqft less living space and -$105,140 for being older and +$124,420 for having a garage. Net adjustment: -$341,726.

The Neighborhood

This home is valued 28.2% above the R701575F - OLD TOWN ROUND ROCK median of $319,256. With 360 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 4.3% over the past year.

R701575F - OLD TOWN ROUND ROCK

above average
360 Properties
$319,256 Median Value
+4.3% YoY Change
5% Have Pool
24% Have Garage
This Home
$409,152
Median
$319,256

This home is +28.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $3,440 across all districts. With a homestead exemption claimed, that drops to $2,154 — saving $1,286 per year. That's $180 per month a buyer should budget. The assessed value increased +37.6% vs the subdivision average of +4.3%. This above-average increase gives a protest opportunity score of 100 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$1,707
Round RockCity0.3720%$711
Williamson CountyCounty0.3694%$706
Austin Community Collegespecial0.1034%$198
Williamson County FM/RdCounty0.0443%$85
Upper Brushy Creek WCIDWater0.0170%$32
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$3,440
100 / 100

There may be a strong case to protest this appraisal.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $430,151 would pay approximately $2,685 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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