8510 HILL ROCK DR, ROUND ROCK, TX 78681
ROUND ROCK, 78681 — williamson County
Property at a Glance
This home is estimated between $309,904 and $545,930, with a best estimate of $348,185. That places the property below the R222592G - CAT HOLLOW ALL SECTIONS R4 median of $451,685, in a neighborhood that declined 6.9% over the past year.
Estimated Value Range
$348,185
$367,186
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 $309,904 and $545,930. More comparables in the same subdivision would strengthen this estimate.
Comparable Properties (5)
Adjusted -$33,472 for 124 sqft less living space. Net adjustment: -$33,472.
Adjusted -$33,742 for 125 sqft less living space and -$14,931 for being older. Net adjustment: -$48,673.
Adjusted -$58,037 for 215 sqft less living space. Net adjustment: -$58,037.
Adjusted +$140,368 for 520 sqft more living space and -$52,259 for being older. Net adjustment: +$88,109.
Adjusted -$24,294 for 90 sqft less living space and +$82,121 for being newer. Net adjustment: +$57,827.
The Neighborhood
This home is valued 18.7% below the R222592G - CAT HOLLOW ALL SECTIONS R4 median of $451,685. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 6.9% over the past year.
R222592G - CAT HOLLOW ALL SECTIONS R4
below averageThis home is -18.7% below the subdivision median.
Tax Analysis
The estimated annual property tax is $7,028 across all districts. With a homestead exemption claimed, that drops to $5,710 — saving $1,318 per year. That's $476 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% | $3,279 |
| Brushy Creek MUD | MUD | 0.3868% | $1,420 |
| Williamson County | County | 0.3694% | $1,357 |
| Austin Community College | special | 0.1034% | $380 |
| Williamson County ESD #2 - Sam Bass VFD | ESD | 0.1000% | $367 |
| Williamson County FM/Rd | County | 0.0443% | $163 |
| Upper Brushy Creek WCID | Water | 0.0170% | $62 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 1.9141% | $7,028 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $348,185 would pay approximately $2,173 per month (principal and interest only, excluding taxes and insurance).