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8400 COLUMBIA FALLS DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,511 sqftBuilt 1989

Property at a Glance

This home is estimated between $374,193 and $567,270, with a best estimate of $484,041. That places the property above the R270588F - Fern Bluff Sec 1,1A,1B,2,2 (AMD) median of $453,749, in a neighborhood that declined 4.0% over the past year.

Estimated Value Range

$374,193 $567,270
Best Estimate
$484,041
WCAD Value
$344,791
High Confidence

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

Based on 5 comparable properties in R270588F - Fern Bluff Sec 1,1A,1B,2,2 (AMD), this home's estimated market value is between $374,193 and $567,270. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

8402 COLUMBIA FALLS DR, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,436 sqft Built 1989
Raw Value $355,691
Adjusted Value $385,690

Adjusted +$29,999 for 75 sqft more living space. Net adjustment: +$29,999.

8322 COLUMBIA FALLS DR, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,436 sqft Built 1989
Raw Value $344,194
Adjusted Value $374,193

Adjusted +$29,999 for 75 sqft more living space. Net adjustment: +$29,999.

8415 MOUNT SHASTA CV, ROUND ROCK, TX 78681
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,464 sqft Built 1987
Raw Value $487,878
Adjusted Value $510,558

Adjusted +$18,800 for 47 sqft more living space and +$3,880 for being newer. Net adjustment: +$22,680.

8413 MOUNT SHASTA CV, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,060 sqft Built 1988
Raw Value $384,934
Adjusted Value $567,270

Adjusted +$180,396 for 451 sqft more living space and +$1,940 for being newer. Net adjustment: +$182,336.

8404 COLUMBIA FALLS DR, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,151 sqft Built 1988
Raw Value $338,104
Adjusted Value $484,041

Adjusted +$143,997 for 360 sqft more living space and +$1,940 for being newer. Net adjustment: +$145,937.

The Neighborhood

This home is valued 24.0% below the R270588F - Fern Bluff Sec 1,1A,1B,2,2 (AMD) median of $453,749. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 4.0% over the past year.

R270588F - Fern Bluff Sec 1,1A,1B,2,2 (AMD)

below average
421 Properties
$453,749 Median Value
-4.0% YoY Change
1% Have Pool
100% Have Garage
This Home
$344,791
Median
$453,749

This home is -24.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,887 across all districts. With a homestead exemption claimed, that drops to $4,573 — saving $1,314 per year. That's $381 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%$3,079
Williamson CountyCounty0.3694%$1,274
Fern Bluff MUDMUD0.1800%$621
Austin Community Collegespecial0.1034%$357
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$345
Williamson County FM/RdCounty0.0443%$153
Upper Brushy Creek WCIDWater0.0170%$59
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7073%$5,887

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $484,041 would pay approximately $3,021 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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