517/518 SIERRA CV, ROUND ROCK, TX 78664
ROUND ROCK, 78664 — williamson County
Property at a Glance
This home is estimated between $375,471 and $421,978, with a best estimate of $394,685. That places the property above the R450X - Round Rock East - Duplex median of $355,449, in a neighborhood that declined 8.7% over the past year.
Estimated Value Range
$394,685
$365,816
Based on 5 comparable properties(5 in the same subdivision)
Based on 5 comparable properties in R450X - Round Rock East - Duplex, this home's estimated market value is between $375,471 and $421,978. All 5 comparables are in the same subdivision, giving this estimate high confidence.
Comparable Properties (5)
Adjusted +$52,659 for 271 sqft more living space. Net adjustment: +$52,659.
Adjusted +$53,825 for 277 sqft more living space. Net adjustment: +$53,825.
Adjusted +$62,569 for 322 sqft more living space. Net adjustment: +$62,569.
Adjusted -$5,635 for 29 sqft less living space and -$11,002 for being older. Net adjustment: -$16,637.
Adjusted +$62,180 for 320 sqft more living space. Net adjustment: +$62,180.
The Neighborhood
This home is valued 2.9% above the R450X - Round Rock East - Duplex median of $355,449. With 836 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.7% over the past year.
R450X - Round Rock East - Duplex
typicalThis home is +2.9% above the subdivision median.
Tax Analysis
The estimated annual property tax is $6,582 across all districts. With a homestead exemption claimed, that drops to $5,264 — saving $1,318 per year. That's $439 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 |
|---|---|---|---|
| Round Rock ISD | School | 0.8931% | $3,267 |
| Round Rock | City | 0.3720% | $1,361 |
| Williamson County | County | 0.3694% | $1,351 |
| Austin Community College | special | 0.1034% | $378 |
| Williamson County FM/Rd | County | 0.0443% | $162 |
| Upper Brushy Creek WCID | Water | 0.0170% | $62 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 1.7993% | $6,582 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $394,685 would pay approximately $2,464 per month (principal and interest only, excluding taxes and insurance).