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3968 SAPPHIRE LOOP, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath1,850 sqftBuilt 2010

Property at a Glance

This home is estimated between $556,953 and $733,885, with a best estimate of $580,191. 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

$556,953 $733,885
Best Estimate
$580,191
WCAD Value
$579,247
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 $556,953 and $733,885. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3964 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 3 bath 1,934 sqft Built 2007
Raw Value $599,942
Adjusted Value $580,191

Adjusted -$25,743 for 84 sqft less living space and +$5,992 for being newer. Net adjustment: -$19,751.

3972 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 3 bath 1,216 sqft Built 2010
Raw Value $539,584
Adjusted Value $733,885

Adjusted +$194,301 for 634 sqft more living space. Net adjustment: +$194,301.

3976 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 3 bath 1,879 sqft Built 2008
Raw Value $597,975
Adjusted Value $593,082

Adjusted -$8,888 for 29 sqft less living space and +$3,995 for being newer. Net adjustment: -$4,893.

3980 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.04 mi 100% similar Same subdivision
4 bed 3 bath 2,189 sqft Built 2007
Raw Value $654,854
Adjusted Value $556,953

Adjusted -$103,893 for 339 sqft less living space and +$5,992 for being newer. Net adjustment: -$97,901.

3952 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.05 mi 100% similar Same subdivision
4 bed 3 bath 1,950 sqft Built 2004
Raw Value $592,854
Adjusted Value $574,192

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

The Neighborhood

This home is valued 7.1% 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
$579,247
Median
$623,673

This home is -7.1% below the subdivision median.

Tax Analysis

The estimated annual property tax is $11,545 across all districts. With a homestead exemption claimed, that drops to $9,916 — saving $1,629 per year. That's $826 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%$6,296
Round RockCity0.3720%$2,155
Williamson CountyCounty0.3694%$2,140
Austin Community Collegespecial0.1034%$599
Williamson County FM/RdCounty0.0443%$257
Upper Brushy Creek WCIDWater0.0170%$98
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9931%$11,545

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $580,191 would pay approximately $3,622 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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