3921 SAPPHIRE LOOP, ROUND ROCK, TX 78681
ROUND ROCK, 78681 — williamson County
Property at a Glance
This home is estimated between $425,152 and $770,086, with a best estimate of $636,362. 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
$636,362
$479,698
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 $425,152 and $770,086. More comparables in the same subdivision would strengthen this estimate.
Comparable Properties (5)
Adjusted -$67,730 for 221 sqft less living space and -$1,997 for being older. Net adjustment: -$69,727.
Adjusted +$29,114 for 95 sqft more living space and -$7,990 for being older. Net adjustment: +$21,124.
Adjusted +$91,021 for 297 sqft more living space and -$7,990 for being older. Net adjustment: +$83,031.
Adjusted +$32,179 for 105 sqft more living space and +$5,992 for being newer. Net adjustment: +$38,171.
Adjusted -$66,504 for 217 sqft less living space. Net adjustment: -$66,504.
The Neighborhood
This home is valued 23.1% 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
below averageThis home is -23.1% below the subdivision median.
Tax Analysis
The estimated annual property tax is $9,561 across all districts. With a homestead exemption claimed, that drops to $7,950 — saving $1,611 per year. That's $663 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
| District | Type | Rate | Annual Amount |
|---|---|---|---|
| Leander ISD | School | 1.0869% | $5,214 |
| Round Rock | City | 0.3720% | $1,784 |
| Williamson County | County | 0.3694% | $1,772 |
| Austin Community College | special | 0.1034% | $496 |
| Williamson County FM/Rd | County | 0.0443% | $213 |
| Upper Brushy Creek WCID | Water | 0.0170% | $82 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 1.9931% | $9,561 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $636,362 would pay approximately $3,972 per month (principal and interest only, excluding taxes and insurance).