5816 CASSTELLO DR, ROUND ROCK, TX 78665
ROUND ROCK, 78665 — williamson County
Property at a Glance
This home is estimated between $355,337 and $429,651, with a best estimate of $383,144. 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
$383,144
$376,474
Based on 5 comparable properties(0 in the same subdivision)
There are 5 comparable properties within range, but none are in H123414C - SIENA LIMMER LOOP. The estimated range of $355,337 and $429,651 should be treated as a rough guide.
Comparable Properties (5)
Adjusted +$7,126 for 34 sqft more living space and +$16,432 for being newer. Net adjustment: +$23,558.
Adjusted +$6,078 for 29 sqft more living space and +$3,286 for being newer. Net adjustment: +$9,364.
Adjusted +$35,211 for 168 sqft more living space. Net adjustment: +$35,211.
Adjusted +$3,982 for 19 sqft more living space and +$3,286 for being newer. Net adjustment: +$7,268.
Adjusted +$20,749 for 99 sqft more living space and +$11,502 for being newer. Net adjustment: +$32,251.
The Neighborhood
This home is valued 9.8% 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 -9.8% below the subdivision median.
Tax Analysis
The estimated annual property tax is $8,956 across all districts. With a homestead exemption claimed, that drops to $7,199 — saving $1,757 per year. That's $600 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% | $4,537 |
| Siena MUD #2 | MUD | 0.6020% | $2,266 |
| Williamson County | County | 0.3694% | $1,391 |
| 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% | $8,956 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $383,144 would pay approximately $2,392 per month (principal and interest only, excluding taxes and insurance).