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3956 SAPPHIRE LOOP, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath2,321 sqftBuilt 2007

Property at a Glance

This home is estimated between $435,834 and $748,778, with a best estimate of $718,545. That places the property above 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

$435,834 $748,778
Best Estimate
$718,545
WCAD Value
$481,560
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 $435,834 and $748,778. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3960 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
3 bed 2 bath 2,522 sqft Built 2007
Raw Value $563,723
Adjusted Value $502,123

Adjusted -$61,600 for 201 sqft less living space. Net adjustment: -$61,600.

3948 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.02 mi 100% similar Same subdivision
3 bed 2 bath 2,552 sqft Built 2006
Raw Value $504,631
Adjusted Value $435,834

Adjusted -$70,794 for 231 sqft less living space and +$1,997 for being newer. Net adjustment: -$68,797.

3964 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.02 mi 100% similar Same subdivision
4 bed 3 bath 1,934 sqft Built 2007
Raw Value $599,942
Adjusted Value $718,545

Adjusted +$118,603 for 387 sqft more living space. Net adjustment: +$118,603.

3940 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.05 mi 100% similar Same subdivision
4 bed 3 bath 1,921 sqft Built 2007
Raw Value $626,191
Adjusted Value $748,778

Adjusted +$122,587 for 400 sqft more living space. Net adjustment: +$122,587.

3936 SAPPHIRE LOOP, ROUND ROCK, TX 78681
0.06 mi 100% similar Same subdivision
4 bed 3 bath 1,972 sqft Built 2007
Raw Value $620,819
Adjusted Value $727,776

Adjusted +$106,957 for 349 sqft more living space. Net adjustment: +$106,957.

The Neighborhood

This home is valued 22.8% 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

below average
427 Properties
$623,673 Median Value
-8.0% YoY Change
1% Have Pool
100% Have Garage
This Home
$481,560
Median
$623,673

This home is -22.8% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,598 across all districts. With a homestead exemption claimed, that drops to $7,987 — saving $1,611 per year. That's $666 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%$5,234
Round RockCity0.3720%$1,791
Williamson CountyCounty0.3694%$1,779
Austin Community Collegespecial0.1034%$498
Williamson County FM/RdCounty0.0443%$213
Upper Brushy Creek WCIDWater0.0170%$82
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9931%$9,598

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $718,545 would pay approximately $4,485 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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