5805 CASSTELLO DR, ROUND ROCK, TX 78665
ROUND ROCK, 78665 — williamson County
Property at a Glance
This home is estimated between $326,298 and $754,534, with a best estimate of $433,248. 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
$433,248
$445,777
Based on 5 comparable properties(3 in the same subdivision)
Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $326,298 and $754,534. More comparables in the same subdivision would strengthen this estimate.
Comparable Properties (5)
Adjusted +$43,385 for 207 sqft more living space. Net adjustment: +$43,385.
Adjusted +$63,506 for 303 sqft more living space and +$1,643 for being newer. Net adjustment: +$65,149.
Adjusted -$135,396 for 646 sqft less living space and -$3,286 for being older. Net adjustment: -$138,682.
Adjusted +$36,469 for 174 sqft more living space. Net adjustment: +$36,469.
Adjusted -$78,806 for 376 sqft less living space and +$4,930 for being newer. Net adjustment: -$73,876.
The Neighborhood
This home is valued 6.8% above the H123414C - SIENA LIMMER LOOP median of $417,399. With 1,146 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 2.7% over the past year.
H123414C - SIENA LIMMER LOOP
typicalThis home is +6.8% above the subdivision median.
Tax Analysis
The estimated annual property tax is $10,604 across all districts. With a homestead exemption claimed, that drops to $8,835 — saving $1,769 per year. That's $736 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% | $5,373 |
| Siena MUD #2 | MUD | 0.6020% | $2,684 |
| Williamson County | County | 0.3694% | $1,647 |
| Williamson County ESD #3 - Hutto | ESD | 0.1000% | $446 |
| Williamson County FM/Rd | County | 0.0443% | $198 |
| EWC Higher Ed Center | special | 0.0409% | $182 |
| Upper Brushy Creek WCID | Water | 0.0170% | $76 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 2.3788% | $10,604 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $433,248 would pay approximately $2,704 per month (principal and interest only, excluding taxes and insurance).