3500 SHELLCASTLE LN, ROUND ROCK, TX 78681
ROUND ROCK, 78681 — williamson County
Property at a Glance
This home is estimated between $381,806 and $643,954, with a best estimate of $446,604. 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
$446,604
$425,958
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 $381,806 and $643,954. All 5 comparables are in the same subdivision, giving this estimate high confidence.
Comparable Properties (5)
Adjusted +$32,340 for 116 sqft more living space. Net adjustment: +$32,340.
Adjusted +$67,746 for 243 sqft more living space. Net adjustment: +$67,746.
Adjusted -$89,491 for 321 sqft less living space and +$271 for being newer. Net adjustment: -$89,220.
Adjusted +$25,927 for 93 sqft more living space and -$271 for being older. Net adjustment: +$25,656.
Adjusted -$3,345 for 12 sqft less living space. Net adjustment: -$3,345.
The Neighborhood
This home is valued 16.6% 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 -16.6% below the subdivision median.
Tax Analysis
The estimated annual property tax is $7,664 across all districts. With a homestead exemption claimed, that drops to $6,335 — saving $1,329 per year. That's $528 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% | $3,804 |
| Round Rock | City | 0.3720% | $1,585 |
| Williamson County | County | 0.3694% | $1,574 |
| Austin Community College | special | 0.1034% | $440 |
| Williamson County FM/Rd | County | 0.0443% | $189 |
| Upper Brushy Creek WCID | Water | 0.0170% | $72 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 1.7993% | $7,664 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $446,604 would pay approximately $2,788 per month (principal and interest only, excluding taxes and insurance).