3529 SHELLCASTLE LN, ROUND ROCK, TX 78681
ROUND ROCK, 78681 — williamson County
Property at a Glance
This home is estimated between $454,570 and $716,718, with a best estimate of $519,367. That places the property above the L498506D - VILLAGE AT MAYFIELD median of $510,992, in a neighborhood that declined 5.8% over the past year.
Estimated Value Range
$519,367
$457,380
Based on 5 comparable properties(5 in the same subdivision)
Based on 5 comparable properties in L498506D - VILLAGE AT MAYFIELD, this home's estimated market value is between $454,570 and $716,718. All 5 comparables are in the same subdivision, giving this estimate high confidence.
Comparable Properties (5)
Adjusted +$105,103 for 377 sqft more living space. Net adjustment: +$105,103.
Adjusted +$140,510 for 504 sqft more living space. Net adjustment: +$140,510.
Adjusted -$16,727 for 60 sqft less living space and +$271 for being newer. Net adjustment: -$16,456.
Adjusted +$98,691 for 354 sqft more living space and -$271 for being older. Net adjustment: +$98,420.
Adjusted +$69,418 for 249 sqft more living space. Net adjustment: +$69,418.
The Neighborhood
This home is valued 10.5% below the L498506D - VILLAGE AT MAYFIELD median of $510,992. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 5.8% over the past year.
L498506D - VILLAGE AT MAYFIELD
typicalThis home is -10.5% below the subdivision median.
Tax Analysis
The estimated annual property tax is $8,230 across all districts. With a homestead exemption claimed, that drops to $6,895 — saving $1,335 per year. That's $575 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% | $4,085 |
| Round Rock | City | 0.3720% | $1,701 |
| Williamson County | County | 0.3694% | $1,690 |
| Austin Community College | special | 0.1034% | $473 |
| Williamson County FM/Rd | County | 0.0443% | $203 |
| Upper Brushy Creek WCID | Water | 0.0170% | $78 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 1.7993% | $8,230 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $519,367 would pay approximately $3,242 per month (principal and interest only, excluding taxes and insurance).