5800 CASSTELLO DR, ROUND ROCK, TX 78665
ROUND ROCK, 78665 — williamson County
Property at a Glance
This home is estimated between $294,231 and $435,067, with a best estimate of $389,017. That places the property below the H123414C - SIENA LIMMER LOOP median of $417,399, in a neighborhood that declined 2.7% over the past year.
Estimated Value Range
$389,017
$375,890
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 $294,231 and $435,067. More comparables in the same subdivision would strengthen this estimate.
Comparable Properties (5)
Adjusted +$11,318 for 54 sqft more living space. Net adjustment: +$11,318.
Adjusted +$31,439 for 150 sqft more living space and +$1,643 for being newer. Net adjustment: +$33,082.
Adjusted +$4,401 for 21 sqft more living space. Net adjustment: +$4,401.
Adjusted -$167,463 for 799 sqft less living space and -$3,286 for being older. Net adjustment: -$170,749.
Adjusted -$9,222 for 44 sqft less living space and -$3,286 for being older. Net adjustment: -$12,508.
The Neighborhood
This home is valued 9.9% 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 -9.9% below the subdivision median.
Tax Analysis
The estimated annual property tax is $8,942 across all districts. With a homestead exemption claimed, that drops to $7,185 — saving $1,757 per year. That's $599 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% | $4,530 |
| Siena MUD #2 | MUD | 0.6020% | $2,263 |
| Williamson County | County | 0.3694% | $1,389 |
| Williamson County ESD #3 - Hutto | ESD | 0.1000% | $376 |
| Williamson County FM/Rd | County | 0.0443% | $167 |
| EWC Higher Ed Center | special | 0.0409% | $154 |
| Upper Brushy Creek WCID | Water | 0.0170% | $64 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 2.3788% | $8,942 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $389,017 would pay approximately $2,428 per month (principal and interest only, excluding taxes and insurance).