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17820 PARK VALLEY DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath2,314 sqftBuilt 1993

Property at a Glance

This home is estimated between $451,880 and $989,722, with a best estimate of $572,645. 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

$451,880 $989,722
Best Estimate
$572,645
WCAD Value
$476,165
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 $451,880 and $989,722 should be treated as a rough guide.

Comparable Properties (5)

17847 PARK VALLEY DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,082 sqft Built 1992
Raw Value $426,113
Adjusted Value $520,851

Adjusted +$92,798 for 232 sqft more living space and +$1,940 for being newer. Net adjustment: +$94,738.

4 bed 3 bath 2,377 sqft Built 1996
Raw Value $482,899
Adjusted Value $451,880

Adjusted -$25,199 for 63 sqft less living space and -$5,820 for being older. Net adjustment: -$31,019.

4 bed 2 bath 1,951 sqft Built 1983
Raw Value $689,293
Adjusted Value $853,889

Adjusted +$145,197 for 363 sqft more living space and +$19,399 for being newer. Net adjustment: +$164,596.

3 bed 2 bath 2,263 sqft Built 1978
Raw Value $523,147
Adjusted Value $572,645

Adjusted +$20,400 for 51 sqft more living space and +$29,098 for being newer. Net adjustment: +$49,498.

4 bed 2 bath 1,862 sqft Built 1981
Raw Value $785,648
Adjusted Value $989,722

Adjusted +$180,796 for 452 sqft more living space and +$23,278 for being newer. Net adjustment: +$204,074.

The Neighborhood

This home is valued 4.9% 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
$476,165
Median
$453,749

This home is +4.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $8,129 across all districts. With a homestead exemption claimed, that drops to $6,791 — saving $1,338 per year. That's $566 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%$4,253
Williamson CountyCounty0.3694%$1,759
Fern Bluff MUDMUD0.1800%$857
Austin Community Collegespecial0.1034%$492
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$476
Williamson County FM/RdCounty0.0443%$211
Upper Brushy Creek WCIDWater0.0170%$81
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7073%$8,129

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $572,645 would pay approximately $3,574 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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