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8505 COLUMBIA FALLS DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,081 sqftBuilt 1989

Property at a Glance

This home is estimated between $357,352 and $531,743, with a best estimate of $439,216. That places the property below 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

$357,352 $531,743
Best Estimate
$439,216
WCAD Value
$440,637
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 $357,352 and $531,743. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

8507 COLUMBIA FALLS DR, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,295 sqft Built 1989
Raw Value $442,950
Adjusted Value $357,352

Adjusted -$85,598 for 214 sqft less living space. Net adjustment: -$85,598.

8503 COLUMBIA FALLS DR, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,120 sqft Built 1987
Raw Value $479,946
Adjusted Value $468,226

Adjusted -$15,600 for 39 sqft less living space and +$3,880 for being newer. Net adjustment: -$11,720.

17530 KLAMATH FALLS DR, ROUND ROCK, TX 78681
0.02 mi 100% similar Same subdivision
4 bed 2 bath 1,404 sqft Built 1987
Raw Value $551,378
Adjusted Value $426,061

Adjusted -$129,197 for 323 sqft less living space and +$3,880 for being newer. Net adjustment: -$125,317.

17600 COLUMBIA FALLS CV, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
3 bed 2 bath 787 sqft Built 1989
Raw Value $414,146
Adjusted Value $531,743

Adjusted +$117,597 for 294 sqft more living space. Net adjustment: +$117,597.

17601 COLUMBIA FALLS CV, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,305 sqft Built 1987
Raw Value $524,934
Adjusted Value $439,216

Adjusted -$89,598 for 224 sqft less living space and +$3,880 for being newer. Net adjustment: -$85,718.

The Neighborhood

This home is valued 2.9% 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)

typical
421 Properties
$453,749 Median Value
-4.0% YoY Change
1% Have Pool
100% Have Garage
This Home
$440,637
Median
$453,749

This home is -2.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,523 across all districts. With a homestead exemption claimed, that drops to $6,191 — saving $1,332 per year. That's $516 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%$3,935
Williamson CountyCounty0.3694%$1,628
Fern Bluff MUDMUD0.1800%$793
Austin Community Collegespecial0.1034%$456
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$441
Williamson County FM/RdCounty0.0443%$195
Upper Brushy Creek WCIDWater0.0170%$75
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7073%$7,523

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $439,216 would pay approximately $2,742 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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