3606 HILLROCK DR, ROUND ROCK, TX 78681
ROUND ROCK, 78681 — williamson County
Property at a Glance
This home is estimated between $299,030 and $365,586, with a best estimate of $319,352. That places the property above the R210480H - Brushy Creek median of $296,542, in a neighborhood that declined 14.6% over the past year.
Estimated Value Range
$319,352
$272,243
Based on 5 comparable properties(4 in the same subdivision)
Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $299,030 and $365,586. More comparables in the same subdivision would strengthen this estimate.
Comparable Properties (5)
Adjusted +$27,208 for 122 sqft more living space and +$1,607 for being newer. Net adjustment: +$28,815.
Adjusted +$19,626 for 88 sqft more living space and -$1,607 for being older. Net adjustment: +$18,019.
Adjusted +$57,539 for 258 sqft more living space and +$6,427 for being newer. Net adjustment: +$63,966.
Adjusted +$39,920 for 179 sqft more living space and +$1,607 for being newer. Net adjustment: +$41,527.
Adjusted +$30,554 for 137 sqft more living space and -$1,607 for being older. Net adjustment: +$28,947.
The Neighborhood
This home is valued 8.2% below the R210480H - Brushy Creek median of $296,542. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 14.6% over the past year.
R210480H - Brushy Creek
typicalThis home is -8.2% below the subdivision median.
Tax Analysis
The estimated annual property tax is $5,211 across all districts. With a homestead exemption claimed, that drops to $3,910 — saving $1,301 per year. That's $326 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% | $2,431 |
| Brushy Creek MUD | MUD | 0.3868% | $1,053 |
| Williamson County | County | 0.3694% | $1,006 |
| Austin Community College | special | 0.1034% | $281 |
| Williamson County ESD #2 - Sam Bass VFD | ESD | 0.1000% | $272 |
| Williamson County FM/Rd | County | 0.0443% | $121 |
| Upper Brushy Creek WCID | Water | 0.0170% | $46 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 1.9141% | $5,211 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $319,352 would pay approximately $1,993 per month (principal and interest only, excluding taxes and insurance).