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1815 RUSTY NAIL LOOP, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,885 sqftBuilt 1994

Property at a Glance

This home is estimated between $381,186 and $620,559, with a best estimate of $396,666. That places the property above 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

$381,186 $620,559
Best Estimate
$396,666
WCAD Value
$364,585
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $381,186 and $620,559. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

4 bed 2 bath 1,786 sqft Built 2000
Raw Value $610,030
Adjusted Value $620,559

Adjusted +$22,598 for 99 sqft more living space and -$12,069 for being older. Net adjustment: +$10,529.

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 $386,183

Adjusted +$69,165 for 303 sqft more living space and +$2,011 for being newer. Net adjustment: +$71,176.

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 $381,186

Adjusted +$69,165 for 303 sqft more living space. Net adjustment: +$69,165.

1609 RUSTY NAIL LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,447 sqft Built 1993
Raw Value $294,674
Adjusted Value $396,666

Adjusted +$99,981 for 438 sqft more living space and +$2,011 for being newer. Net adjustment: +$101,992.

1811 RUSTY NAIL LOOP, ROUND ROCK, TX 78681
0.00 mi 99% similar Same subdivision
3 bed 2 bath 1,218 sqft Built 1995
Raw Value $276,574
Adjusted Value $426,817

Adjusted +$152,254 for 667 sqft more living space and -$2,011 for being older. Net adjustment: +$150,243.

The Neighborhood

This home is valued 25.5% above the R123492H - Sam Bass/Hermitage/Somerset R3 median of $290,418. With 648 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 7.8% over the past year.

R123492H - Sam Bass/Hermitage/Somerset R3

above average
648 Properties
$290,418 Median Value
-7.8% YoY Change
2% Have Pool
89% Have Garage
This Home
$364,585
Median
$290,418

This home is +25.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,560 across all districts. With a homestead exemption claimed, that drops to $5,242 — saving $1,318 per year. That's $437 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%$3,256
Round RockCity0.3720%$1,356
Williamson CountyCounty0.3694%$1,347
Austin Community Collegespecial0.1034%$377
Williamson County FM/RdCounty0.0443%$162
Upper Brushy Creek WCIDWater0.0170%$62
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,560

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $396,666 would pay approximately $2,476 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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