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4104 SAPPHIRE LOOP, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath1,701 sqftBuilt 2009

Property at a Glance

This home is estimated between $250,402 and $754,531, with a best estimate of $541,983. 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

$250,402 $754,531
Best Estimate
$541,983
WCAD Value
$600,870
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 $250,402 and $754,531. 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 $480,406

Adjusted -$154,460 for 504 sqft less living space and -$3,995 for being older. Net adjustment: -$158,455.

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 $590,507

Adjusted -$92,553 for 302 sqft less living space and -$3,995 for being older. Net adjustment: -$96,548.

4 bed 3 bath 1,704 sqft Built 2004
Raw Value $745,463
Adjusted Value $754,531

Adjusted -$919 for 3 sqft less living space and +$9,987 for being newer. Net adjustment: +$9,068.

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 $250,402

Adjusted -$243,642 for 795 sqft less living space and -$3,995 for being older. Net adjustment: -$247,637.

4013 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,997 sqft Built 2011
Raw Value $636,693
Adjusted Value $541,983

Adjusted -$90,715 for 296 sqft less living space and -$3,995 for being older. Net adjustment: -$94,710.

The Neighborhood

This home is valued 3.7% below the L495414C - BORHO/MAYFIELD RANCH/SAPPHIRE LOOP median of $623,673. That positions it competitively for buyers comparing within the neighborhood. 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
$600,870
Median
$623,673

This home is -3.7% below the subdivision median.

Tax Analysis

The estimated annual property tax is $11,976 across all districts. With a homestead exemption claimed, that drops to $10,343 — saving $1,633 per year. That's $862 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%$6,531
Round RockCity0.3720%$2,235
Williamson CountyCounty0.3694%$2,220
Austin Community Collegespecial0.1034%$621
Williamson County FM/RdCounty0.0443%$266
Upper Brushy Creek WCIDWater0.0170%$102
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9931%$11,976

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $541,983 would pay approximately $3,383 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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