3605 HILLROCK DR, ROUND ROCK, TX 78681
ROUND ROCK, 78681 — williamson County
Property at a Glance
This home is estimated between $280,296 and $346,852, with a best estimate of $300,619. 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
$300,619
$272,997
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 $280,296 and $346,852. More comparables in the same subdivision would strengthen this estimate.
Comparable Properties (5)
Adjusted +$8,475 for 38 sqft more living space and +$1,607 for being newer. Net adjustment: +$10,082.
Adjusted +$892 for 4 sqft more living space and -$1,607 for being older. Net adjustment: -$715.
Adjusted +$38,805 for 174 sqft more living space and +$6,427 for being newer. Net adjustment: +$45,232.
Adjusted +$11,820 for 53 sqft more living space and -$1,607 for being older. Net adjustment: +$10,213.
Adjusted +$21,187 for 95 sqft more living space and +$1,607 for being newer. Net adjustment: +$22,794.
The Neighborhood
This home is valued 7.9% 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 -7.9% below the subdivision median.
Tax Analysis
The estimated annual property tax is $5,225 across all districts. With a homestead exemption claimed, that drops to $3,925 — saving $1,300 per year. That's $327 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% | $2,438 |
| Brushy Creek MUD | MUD | 0.3868% | $1,056 |
| Williamson County | County | 0.3694% | $1,009 |
| Austin Community College | special | 0.1034% | $282 |
| Williamson County ESD #2 - Sam Bass VFD | ESD | 0.1000% | $273 |
| 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% | $5,225 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $300,619 would pay approximately $1,876 per month (principal and interest only, excluding taxes and insurance).