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17851 PARK VALLEY DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath962 sqftBuilt 1992

Property at a Glance

This home is estimated between $-21,877 and $443,228, with a best estimate of $408,341. 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

$-21,877 $443,228
Best Estimate
$408,341
WCAD Value
$475,242
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 $-21,877 and $443,228 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 1,149 sqft Built 1999
Raw Value $531,605
Adjusted Value $443,228

Adjusted -$74,798 for 187 sqft less living space and -$13,579 for being older. Net adjustment: -$88,377.

17847 PARK VALLEY DR, ROUND ROCK, TX 78681
0.00 mi 96% similar Same subdivision
3 bed 2 bath 2,082 sqft Built 1992
Raw Value $426,113
Adjusted Value $-21,877

Adjusted -$447,990 for 1,120 sqft less living space. Net adjustment: -$447,990.

4 bed 2 bath 921 sqft Built 1978
Raw Value $377,237
Adjusted Value $420,795

Adjusted +$16,400 for 41 sqft more living space and +$27,158 for being newer. Net adjustment: +$43,558.

4 bed 2 bath 1,134 sqft Built 1979
Raw Value $451,921
Adjusted Value $408,341

Adjusted -$68,798 for 172 sqft less living space and +$25,218 for being newer. Net adjustment: -$43,580.

3 bed 2 bath 1,625 sqft Built 1984
Raw Value $388,330
Adjusted Value $198,848

Adjusted -$265,194 for 663 sqft less living space and +$15,519 for being newer and +$60,193 for having a garage. Net adjustment: -$189,482.

The Neighborhood

This home is valued 4.7% 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
$475,242
Median
$453,749

This home is +4.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $8,114 across all districts. With a homestead exemption claimed, that drops to $6,776 — saving $1,338 per year. That's $565 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%$4,244
Williamson CountyCounty0.3694%$1,756
Fern Bluff MUDMUD0.1800%$855
Austin Community Collegespecial0.1034%$491
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$475
Williamson County FM/RdCounty0.0443%$211
Upper Brushy Creek WCIDWater0.0170%$81
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7073%$8,114

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $408,341 would pay approximately $2,549 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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