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4013 SAPPHIRE LOOP, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath1,997 sqftBuilt 2011

Property at a Glance

This home is estimated between $282,795 and $685,216, with a best estimate of $456,137. 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

$282,795 $685,216
Best Estimate
$456,137
WCAD Value
$636,693
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 $282,795 and $685,216. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

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 $575,116

Adjusted -$63,745 for 208 sqft less living space. Net adjustment: -$63,745.

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 $685,216

Adjusted -$1,839 for 6 sqft less living space. Net adjustment: -$1,839.

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 $345,111

Adjusted -$152,928 for 499 sqft less living space. Net adjustment: -$152,928.

4112 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 3,208 sqft Built 2008
Raw Value $647,936
Adjusted Value $282,795

Adjusted -$371,133 for 1,211 sqft less living space and +$5,992 for being newer. Net adjustment: -$365,141.

4 bed 3 bath 2,018 sqft Built 2000
Raw Value $440,601
Adjusted Value $456,137

Adjusted -$6,436 for 21 sqft less living space and +$21,972 for being newer. Net adjustment: +$15,536.

The Neighborhood

This home is valued 2.1% 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
$636,693
Median
$623,673

This home is +2.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,690 across all districts. With a homestead exemption claimed, that drops to $11,051 — saving $1,639 per year. That's $921 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%$6,920
Round RockCity0.3720%$2,368
Williamson CountyCounty0.3694%$2,352
Austin Community Collegespecial0.1034%$658
Williamson County FM/RdCounty0.0443%$282
Upper Brushy Creek WCIDWater0.0170%$108
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9931%$12,690

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $456,137 would pay approximately $2,847 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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