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3952 SAPPHIRE LOOP, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath1,950 sqftBuilt 2004

Property at a Glance

This home is estimated between $597,909 and $689,432, with a best estimate of $608,085. 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

$597,909 $689,432
Best Estimate
$608,085
WCAD Value
$592,854
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 $597,909 and $689,432. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3944 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.02 mi 100% similar Same subdivision
4 bed 3 bath 1,645 sqft Built 2006
Raw Value $599,954
Adjusted Value $689,432

Adjusted +$93,473 for 305 sqft more living space and -$3,995 for being older. Net adjustment: +$89,478.

3964 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.04 mi 100% similar Same subdivision
4 bed 3 bath 1,934 sqft Built 2007
Raw Value $599,942
Adjusted Value $598,853

Adjusted +$4,903 for 16 sqft more living space and -$5,992 for being older. Net adjustment: -$1,089.

3940 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.04 mi 100% similar Same subdivision
4 bed 3 bath 1,921 sqft Built 2007
Raw Value $626,191
Adjusted Value $629,087

Adjusted +$8,888 for 29 sqft more living space and -$5,992 for being older. Net adjustment: +$2,896.

3968 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.05 mi 100% similar Same subdivision
4 bed 3 bath 1,850 sqft Built 2010
Raw Value $579,247
Adjusted Value $597,909

Adjusted +$30,647 for 100 sqft more living space and -$11,985 for being older. Net adjustment: +$18,662.

3936 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.05 mi 100% similar Same subdivision
4 bed 3 bath 1,972 sqft Built 2007
Raw Value $620,819
Adjusted Value $608,085

Adjusted -$6,742 for 22 sqft less living space and -$5,992 for being older. Net adjustment: -$12,734.

The Neighborhood

This home is valued 4.9% 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
$592,854
Median
$623,673

This home is -4.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $11,816 across all districts. With a homestead exemption claimed, that drops to $10,185 — saving $1,631 per year. That's $849 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%$6,444
Round RockCity0.3720%$2,205
Williamson CountyCounty0.3694%$2,190
Austin Community Collegespecial0.1034%$613
Williamson County FM/RdCounty0.0443%$263
Upper Brushy Creek WCIDWater0.0170%$101
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9931%$11,816

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $608,085 would pay approximately $3,796 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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