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3848 SAPPHIRE LOOP, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,361 sqftBuilt 2007

Property at a Glance

This home is estimated between $443,847 and $788,781, with a best estimate of $552,125. That places the property below the L495414C - BORHO/MAYFIELD RANCH/SAPPHIRE LOOP median of $623,673, in a neighborhood that declined 8.0% over the past year.

Estimated Value Range

$443,847 $788,781
Best Estimate
$552,125
WCAD Value
$701,749
High Confidence

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

Based on 5 comparable properties in L495414C - BORHO/MAYFIELD RANCH/SAPPHIRE LOOP, this home's estimated market value is between $443,847 and $788,781. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3912 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,521 sqft Built 2008
Raw Value $603,157
Adjusted Value $552,125

Adjusted -$49,035 for 160 sqft less living space and -$1,997 for being older. Net adjustment: -$51,032.

3917 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,205 sqft Built 2011
Raw Value $638,861
Adjusted Value $678,680

Adjusted +$47,809 for 156 sqft more living space and -$7,990 for being older. Net adjustment: +$39,819.

4009 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,003 sqft Built 2011
Raw Value $687,055
Adjusted Value $788,781

Adjusted +$109,716 for 358 sqft more living space and -$7,990 for being older. Net adjustment: +$101,726.

3929 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,517 sqft Built 2007
Raw Value $491,656
Adjusted Value $443,847

Adjusted -$47,809 for 156 sqft less living space. Net adjustment: -$47,809.

3920 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,496 sqft Built 2011
Raw Value $498,039
Adjusted Value $448,676

Adjusted -$41,373 for 135 sqft less living space and -$7,990 for being older. Net adjustment: -$49,363.

The Neighborhood

This home is valued 12.5% above the L495414C - BORHO/MAYFIELD RANCH/SAPPHIRE LOOP median of $623,673. With 427 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.0% over the past year.

L495414C - BORHO/MAYFIELD RANCH/SAPPHIRE LOOP

typical
427 Properties
$623,673 Median Value
-8.0% YoY Change
1% Have Pool
100% Have Garage
This Home
$701,749
Median
$623,673

This home is +12.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,986 across all districts. With a homestead exemption claimed, that drops to $12,335 — saving $1,651 per year. That's $1,028 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
Leander ISDSchool1.0869%$7,627
Round RockCity0.3720%$2,611
Williamson CountyCounty0.3694%$2,593
Austin Community Collegespecial0.1034%$726
Williamson County FM/RdCounty0.0443%$311
Upper Brushy Creek WCIDWater0.0170%$119
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9931%$13,986

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $552,125 would pay approximately $3,446 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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