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3916 SAPPHIRE LOOP, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,070 sqftBuilt 2008

Property at a Glance

This home is estimated between $299,175 and $701,596, with a best estimate of $591,496. 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

$299,175 $701,596
Best Estimate
$591,496
WCAD Value
$630,252
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 $299,175 and $701,596. All 5 comparables are in the same subdivision, giving this estimate high confidence.

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 $591,496

Adjusted -$41,373 for 135 sqft less living space and -$5,992 for being older. Net adjustment: -$47,365.

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 $701,596

Adjusted +$20,533 for 67 sqft more living space and -$5,992 for being older. Net adjustment: +$14,541.

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 $361,491

Adjusted -$130,556 for 426 sqft less living space and -$5,992 for being older. Net adjustment: -$136,548.

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 $299,175

Adjusted -$348,761 for 1,138 sqft less living space. Net adjustment: -$348,761.

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 $653,073

Adjusted +$22,372 for 73 sqft more living space and -$5,992 for being older. Net adjustment: +$16,380.

The Neighborhood

This home is valued 1.1% 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
$630,252
Median
$623,673

This home is +1.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,561 across all districts. With a homestead exemption claimed, that drops to $10,923 — saving $1,638 per year. That's $910 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%$6,850
Round RockCity0.3720%$2,345
Williamson CountyCounty0.3694%$2,328
Austin Community Collegespecial0.1034%$652
Williamson County FM/RdCounty0.0443%$279
Upper Brushy Creek WCIDWater0.0170%$107
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9931%$12,561

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $591,496 would pay approximately $3,692 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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