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1821 RUSTY NAIL LOOP, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,111 sqftBuilt 1987

Property at a Glance

This home is estimated between $190,427 and $267,791, with a best estimate of $251,807. That places the property below the R123492H - Sam Bass/Hermitage/Somerset R3 median of $290,418, in a neighborhood that declined 7.8% over the past year.

Estimated Value Range

$190,427 $267,791
Best Estimate
$251,807
WCAD Value
$249,865
High Confidence

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

Based on 5 comparable properties in R123492H - Sam Bass/Hermitage/Somerset R3, this home's estimated market value is between $190,427 and $267,791. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1707 RUSTY NAIL LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,582 sqft Built 1993
Raw Value $315,007
Adjusted Value $195,424

Adjusted -$107,514 for 471 sqft less living space and -$12,069 for being older. Net adjustment: -$119,583.

1706 RUSTY NAIL LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 977 sqft Built 1995
Raw Value $253,294
Adjusted Value $267,791

Adjusted +$30,588 for 134 sqft more living space and -$16,091 for being older. Net adjustment: +$14,497.

1807 RUSTY NAIL LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,582 sqft Built 1994
Raw Value $312,021
Adjusted Value $190,427

Adjusted -$107,514 for 471 sqft less living space and -$14,080 for being older. Net adjustment: -$121,594.

1817 RUSTY NAIL LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,006 sqft Built 1995
Raw Value $258,634
Adjusted Value $266,511

Adjusted +$23,968 for 105 sqft more living space and -$16,091 for being older. Net adjustment: +$7,877.

1808 RUSTY NAIL LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 1,217 sqft Built 1996
Raw Value $294,106
Adjusted Value $251,807

Adjusted -$24,196 for 106 sqft less living space and -$18,103 for being older. Net adjustment: -$42,299.

The Neighborhood

This home is valued 14.0% below the R123492H - Sam Bass/Hermitage/Somerset R3 median of $290,418. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 7.8% over the past year.

R123492H - Sam Bass/Hermitage/Somerset R3

typical
648 Properties
$290,418 Median Value
-7.8% YoY Change
2% Have Pool
89% Have Garage
This Home
$249,865
Median
$290,418

This home is -14.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $4,496 across all districts. With a homestead exemption claimed, that drops to $3,199 — saving $1,297 per year. That's $267 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%$2,232
Round RockCity0.3720%$929
Williamson CountyCounty0.3694%$923
Austin Community Collegespecial0.1034%$258
Williamson County FM/RdCounty0.0443%$111
Upper Brushy Creek WCIDWater0.0170%$42
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$4,496

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $251,807 would pay approximately $1,572 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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