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8520 COLUMBIA FALLS DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,371 sqftBuilt 1988

Property at a Glance

This home is estimated between $217,480 and $632,534, with a best estimate of $537,813. 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

$217,480 $632,534
Best Estimate
$537,813
WCAD Value
$463,824
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 $217,480 and $632,534. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

8518 COLUMBIA FALLS DR, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,348 sqft Built 1991
Raw Value $525,710
Adjusted Value $529,090

Adjusted +$9,200 for 23 sqft more living space and -$5,820 for being older. Net adjustment: +$3,380.

8516 COLUMBIA FALLS DR, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,404 sqft Built 1988
Raw Value $551,013
Adjusted Value $537,813

Adjusted -$13,200 for 33 sqft less living space. Net adjustment: -$13,200.

8519 COLUMBIA FALLS DR, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,754 sqft Built 1992
Raw Value $378,435
Adjusted Value $217,480

Adjusted -$153,196 for 383 sqft less living space and -$7,759 for being older. Net adjustment: -$160,955.

8514 COLUMBIA FALLS DR, ROUND ROCK, TX 78681
0.04 mi 100% similar Same subdivision
4 bed 2 bath 996 sqft Built 1991
Raw Value $474,039
Adjusted Value $618,215

Adjusted +$149,996 for 375 sqft more living space and -$5,820 for being older. Net adjustment: +$144,176.

8513 COLUMBIA FALLS DR, ROUND ROCK, TX 78681
0.05 mi 100% similar Same subdivision
4 bed 2 bath 1,114 sqft Built 1987
Raw Value $527,796
Adjusted Value $632,534

Adjusted +$102,798 for 257 sqft more living space and +$1,940 for being newer. Net adjustment: +$104,738.

The Neighborhood

This home is valued 2.2% above the R270588F - Fern Bluff Sec 1,1A,1B,2,2 (AMD) median of $453,749. With 421 homes in the subdivision, the property sits in the upper tier. 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
$463,824
Median
$453,749

This home is +2.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,919 across all districts. With a homestead exemption claimed, that drops to $6,583 — saving $1,336 per year. That's $549 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%$4,142
Williamson CountyCounty0.3694%$1,714
Fern Bluff MUDMUD0.1800%$835
Austin Community Collegespecial0.1034%$480
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$464
Williamson County FM/RdCounty0.0443%$206
Upper Brushy Creek WCIDWater0.0170%$79
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7073%$7,919

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $537,813 would pay approximately $3,357 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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