3521 SHELLCASTLE LN, ROUND ROCK, TX 78681
ROUND ROCK, 78681 — williamson County
Property at a Glance
This home is estimated between $383,486 and $645,634, with a best estimate of $448,284. 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
$448,284
$469,295
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 $383,486 and $645,634. All 5 comparables are in the same subdivision, giving this estimate high confidence.
Comparable Properties (5)
Adjusted +$34,291 for 123 sqft more living space and -$271 for being older. Net adjustment: +$34,020.
Adjusted +$69,697 for 250 sqft more living space and -$271 for being older. Net adjustment: +$69,426.
Adjusted -$87,540 for 314 sqft less living space. Net adjustment: -$87,540.
Adjusted +$27,879 for 100 sqft more living space and -$541 for being older. Net adjustment: +$27,338.
Adjusted -$1,394 for 5 sqft less living space and -$271 for being older. Net adjustment: -$1,665.
The Neighborhood
This home is valued 8.2% 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 -8.2% below the subdivision median.
Tax Analysis
The estimated annual property tax is $8,444 across all districts. With a homestead exemption claimed, that drops to $7,107 — saving $1,337 per year. That's $592 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% | $4,191 |
| Round Rock | City | 0.3720% | $1,746 |
| Williamson County | County | 0.3694% | $1,734 |
| Austin Community College | special | 0.1034% | $485 |
| Williamson County FM/Rd | County | 0.0443% | $208 |
| Upper Brushy Creek WCID | Water | 0.0170% | $80 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 1.7993% | $8,444 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $448,284 would pay approximately $2,798 per month (principal and interest only, excluding taxes and insurance).