521 KOLBO DR, ROUND ROCK, TX 78665
ROUND ROCK, 78665 — williamson County
Property at a Glance
This home is estimated between $580,946 and $751,855, with a best estimate of $680,776. That places the property below the R500515C - FOREST GROVE median of $686,297, in a neighborhood that declined 2.9% over the past year.
Estimated Value Range
$680,776
$614,875
Based on 5 comparable properties(5 in the same subdivision)
Based on 5 comparable properties in R500515C - FOREST GROVE, this home's estimated market value is between $580,946 and $751,855. All 5 comparables are in the same subdivision, giving this estimate high confidence.
Comparable Properties (5)
Adjusted -$94,290 for 355 sqft less living space. Net adjustment: -$94,290.
Adjusted -$88,446 for 333 sqft less living space. Net adjustment: -$88,446.
Adjusted -$175,564 for 661 sqft less living space. Net adjustment: -$175,564.
Adjusted +$44,356 for 167 sqft more living space. Net adjustment: +$44,356.
Adjusted -$84,197 for 317 sqft less living space. Net adjustment: -$84,197.
The Neighborhood
This home is valued 10.4% below the R500515C - FOREST GROVE median of $686,297. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 2.9% over the past year.
R500515C - FOREST GROVE
typicalThis home is -10.4% below the subdivision median.
Tax Analysis
The estimated annual property tax is $11,063 across all districts. With a homestead exemption claimed, that drops to $9,699 — saving $1,364 per year. That's $808 per month a buyer should budget. The assessed value increased +4.3% vs the subdivision average of -2.9%. This above-average increase gives a protest opportunity score of 46 out of 100 — it may be worth challenging the appraisal.
Tax Districts
| District | Type | Rate | Annual Amount |
|---|---|---|---|
| Round Rock ISD | School | 0.8931% | $5,491 |
| Round Rock | City | 0.3720% | $2,287 |
| Williamson County | County | 0.3694% | $2,272 |
| Austin Community College | special | 0.1034% | $636 |
| Williamson County FM/Rd | County | 0.0443% | $273 |
| Upper Brushy Creek WCID | Water | 0.0170% | $105 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 1.7993% | $11,063 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $680,776 would pay approximately $4,249 per month (principal and interest only, excluding taxes and insurance).