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17853 PARK VALLEY DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,184 sqftBuilt 1992

Property at a Glance

This home is estimated between $188,236 and $601,618, with a best estimate of $510,593. 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

$188,236 $601,618
Best Estimate
$510,593
WCAD Value
$524,487
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 $188,236 and $601,618. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

17848 PARK VALLEY DR, ROUND ROCK, TX 78681
0.05 mi 100% similar Same subdivision
4 bed 2 bath 1,004 sqft Built 1993
Raw Value $531,560
Adjusted Value $601,618

Adjusted +$71,998 for 180 sqft more living space and -$1,940 for being older. Net adjustment: +$70,058.

17845 PARK VALLEY DR, ROUND ROCK, TX 78681
0.05 mi 100% similar Same subdivision
4 bed 2 bath 1,182 sqft Built 1992
Raw Value $509,793
Adjusted Value $510,593

Adjusted +$800 for 2 sqft more living space. Net adjustment: +$800.

8404 MOUNT SHASTA CV, ROUND ROCK, TX 78681
0.06 mi 100% similar Same subdivision
3 bed 2 bath 1,113 sqft Built 1987
Raw Value $334,733
Adjusted Value $372,831

Adjusted +$28,399 for 71 sqft more living space and +$9,699 for being newer. Net adjustment: +$38,098.

8402 MOUNT SHASTA CV, ROUND ROCK, TX 78681
0.07 mi 100% similar Same subdivision
3 bed 2 bath 1,646 sqft Built 1991
Raw Value $371,092
Adjusted Value $188,236

Adjusted -$184,796 for 462 sqft less living space and +$1,940 for being newer. Net adjustment: -$182,856.

8406 MOUNT SHASTA CV, ROUND ROCK, TX 78681
0.06 mi 100% similar Same subdivision
4 bed 2 bath 1,114 sqft Built 1988
Raw Value $491,886
Adjusted Value $527,644

Adjusted +$27,999 for 70 sqft more living space and +$7,759 for being newer. Net adjustment: +$35,758.

The Neighborhood

This home is valued 15.6% 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)

above average
421 Properties
$453,749 Median Value
-4.0% YoY Change
1% Have Pool
100% Have Garage
This Home
$524,487
Median
$453,749

This home is +15.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $8,954 across all districts. With a homestead exemption claimed, that drops to $7,607 — saving $1,347 per year. That's $634 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%$4,684
Williamson CountyCounty0.3694%$1,938
Fern Bluff MUDMUD0.1800%$944
Austin Community Collegespecial0.1034%$542
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$524
Williamson County FM/RdCounty0.0443%$232
Upper Brushy Creek WCIDWater0.0170%$89
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7073%$8,954

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $510,593 would pay approximately $3,187 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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