3505 SHELLCASTLE LN, ROUND ROCK, TX 78681
ROUND ROCK, 78681 — williamson County
Property at a Glance
This home is estimated between $385,151 and $647,299, with a best estimate of $468,728. That places the property below the L498506D - VILLAGE AT MAYFIELD median of $510,992, in a neighborhood that declined 5.8% over the past year.
Estimated Value Range
$468,728
$416,314
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 $385,151 and $647,299. All 5 comparables are in the same subdivision, giving this estimate high confidence.
Comparable Properties (5)
Adjusted +$35,685 for 128 sqft more living space. Net adjustment: +$35,685.
Adjusted +$71,091 for 255 sqft more living space. Net adjustment: +$71,091.
Adjusted -$86,146 for 309 sqft less living space and +$271 for being newer. Net adjustment: -$85,875.
Adjusted +$29,273 for 105 sqft more living space and -$271 for being older. Net adjustment: +$29,002.
Adjusted -$84,194 for 302 sqft less living space. Net adjustment: -$84,194.
The Neighborhood
This home is valued 18.5% 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
below averageThis home is -18.5% below the subdivision median.
Tax Analysis
The estimated annual property tax is $7,491 across all districts. With a homestead exemption claimed, that drops to $6,163 — saving $1,328 per year. That's $514 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% | $3,718 |
| Round Rock | City | 0.3720% | $1,549 |
| Williamson County | County | 0.3694% | $1,538 |
| Austin Community College | special | 0.1034% | $430 |
| Williamson County FM/Rd | County | 0.0443% | $185 |
| Upper Brushy Creek WCID | Water | 0.0170% | $71 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 1.7993% | $7,491 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $468,728 would pay approximately $2,926 per month (principal and interest only, excluding taxes and insurance).