909 MAMMOTH CT, ROUND ROCK, TX 78681
ROUND ROCK, 78681 — williamson County
Property at a Glance
This home is estimated between $365,089 and $438,355, with a best estimate of $398,650. That places the property above the R107503F - PRESERVE AT STONE OAK - PH 3 & 4 median of $368,194, in a neighborhood that declined 10.9% over the past year.
Estimated Value Range
$398,650
$372,747
Based on 5 comparable properties(5 in the same subdivision)
Based on 5 comparable properties in R107503F - PRESERVE AT STONE OAK - PH 3 & 4, this home's estimated market value is between $365,089 and $438,355. All 5 comparables are in the same subdivision, giving this estimate high confidence.
Comparable Properties (5)
Adjusted +$40,918 for 201 sqft more living space. Net adjustment: +$40,918.
Adjusted +$31,554 for 155 sqft more living space. Net adjustment: +$31,554.
Adjusted +$31,554 for 155 sqft more living space. Net adjustment: +$31,554.
Adjusted +$3,257 for 16 sqft more living space. Net adjustment: +$3,257.
Adjusted +$3,257 for 16 sqft more living space. Net adjustment: +$3,257.
The Neighborhood
This home is valued 1.2% above the R107503F - PRESERVE AT STONE OAK - PH 3 & 4 median of $368,194. With 1,045 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 10.9% over the past year.
R107503F - PRESERVE AT STONE OAK - PH 3 & 4
typicalThis home is +1.2% above the subdivision median.
Tax Analysis
The estimated annual property tax is $6,707 across all districts. With a homestead exemption claimed, that drops to $5,388 — saving $1,319 per year. That's $449 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% | $3,329 |
| Round Rock | City | 0.3720% | $1,387 |
| Williamson County | County | 0.3694% | $1,377 |
| Austin Community College | special | 0.1034% | $385 |
| Williamson County FM/Rd | County | 0.0443% | $165 |
| Upper Brushy Creek WCID | Water | 0.0170% | $63 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 1.7993% | $6,707 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $398,650 would pay approximately $2,488 per month (principal and interest only, excluding taxes and insurance).