5821 CASSTELLO DR, ROUND ROCK, TX 78665
ROUND ROCK, 78665 — williamson County
Property at a Glance
This home is estimated between $335,906 and $472,926, with a best estimate of $420,180. That places the property above the H123414C - SIENA LIMMER LOOP median of $417,399, in a neighborhood that declined 2.7% over the past year.
Estimated Value Range
$420,180
$399,028
Based on 5 comparable properties(2 in the same subdivision)
There are 5 comparable properties within range, but few are in H123414C - SIENA LIMMER LOOP. The estimated range of $335,906 and $472,926 should be treated as a rough guide.
Comparable Properties (5)
Adjusted -$15,929 for 76 sqft less living space and +$4,930 for being newer. Net adjustment: -$10,999.
Adjusted -$66,231 for 316 sqft less living space. Net adjustment: -$66,231.
Adjusted +$71,470 for 341 sqft more living space and +$3,286 for being newer. Net adjustment: +$74,756.
Adjusted +$59,733 for 285 sqft more living space. Net adjustment: +$59,733.
Adjusted -$127,431 for 608 sqft less living space and -$1,643 for being older. Net adjustment: -$129,074.
The Neighborhood
This home is valued 4.4% below the H123414C - SIENA LIMMER LOOP median of $417,399. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 2.7% over the past year.
H123414C - SIENA LIMMER LOOP
typicalThis home is -4.4% below the subdivision median.
Tax Analysis
The estimated annual property tax is $9,492 across all districts. With a homestead exemption claimed, that drops to $7,731 — saving $1,761 per year. That's $644 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 |
|---|---|---|---|
| Hutto ISD | School | 1.2052% | $4,809 |
| Siena MUD #2 | MUD | 0.6020% | $2,402 |
| Williamson County | County | 0.3694% | $1,474 |
| Williamson County ESD #3 - Hutto | ESD | 0.1000% | $399 |
| Williamson County FM/Rd | County | 0.0443% | $177 |
| EWC Higher Ed Center | special | 0.0409% | $163 |
| Upper Brushy Creek WCID | Water | 0.0170% | $68 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 2.3788% | $9,492 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $420,180 would pay approximately $2,623 per month (principal and interest only, excluding taxes and insurance).