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17856 PARK VALLEY DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,282 sqftBuilt 1993

Property at a Glance

This home is estimated between $108,060 and $573,165, with a best estimate of $441,739. 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

$108,060 $573,165
Best Estimate
$441,739
WCAD Value
$512,788
Low Confidence

Based on 5 comparable properties(1 in the same subdivision)

There are 5 comparable properties within range, but few are in R270588F - Fern Bluff Sec 1,1A,1B,2,2 (AMD). The estimated range of $108,060 and $573,165 should be treated as a rough guide.

Comparable Properties (5)

4 bed 2 bath 1,276 sqft Built 1979
Raw Value $412,181
Adjusted Value $441,739

Adjusted +$2,400 for 6 sqft more living space and +$27,158 for being newer. Net adjustment: +$29,558.

17847 PARK VALLEY DR, ROUND ROCK, TX 78681
0.00 mi 97% similar Same subdivision
3 bed 2 bath 2,082 sqft Built 1992
Raw Value $426,113
Adjusted Value $108,060

Adjusted -$319,993 for 800 sqft less living space and +$1,940 for being newer. Net adjustment: -$318,053.

4 bed 2 bath 1,134 sqft Built 1979
Raw Value $451,921
Adjusted Value $538,278

Adjusted +$59,199 for 148 sqft more living space and +$27,158 for being newer. Net adjustment: +$86,357.

3 bed 2 bath 1,149 sqft Built 1999
Raw Value $531,605
Adjusted Value $573,165

Adjusted +$53,199 for 133 sqft more living space and -$11,639 for being older. Net adjustment: +$41,560.

3 bed 2 bath 1,625 sqft Built 1984
Raw Value $388,330
Adjusted Value $328,785

Adjusted -$137,197 for 343 sqft less living space and +$17,459 for being newer and +$60,193 for having a garage. Net adjustment: -$59,545.

The Neighborhood

This home is valued 13.0% 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
$512,788
Median
$453,749

This home is +13.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $8,755 across all districts. With a homestead exemption claimed, that drops to $7,410 — saving $1,345 per year. That's $618 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%$4,580
Williamson CountyCounty0.3694%$1,894
Fern Bluff MUDMUD0.1800%$923
Austin Community Collegespecial0.1034%$530
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$513
Williamson County FM/RdCounty0.0443%$227
Upper Brushy Creek WCIDWater0.0170%$87
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7073%$8,755

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $441,739 would pay approximately $2,757 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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