3818 SANDY BROOK DR, ROUND ROCK, TX 78665
ROUND ROCK, 78665 — williamson County
Property at a Glance
This home is estimated between $246,300 and $505,535, with a best estimate of $317,762. That places the property below the R409599G - STONEY BROOK - ALL SECTIONS median of $328,056, in a neighborhood that declined 4.7% over the past year.
Estimated Value Range
$317,762
$325,180
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 $246,300 and $505,535. More comparables in the same subdivision would strengthen this estimate.
Comparable Properties (5)
Adjusted -$27,554 for 119 sqft less living space and -$4,111 for being older. Net adjustment: -$31,665.
Adjusted -$4,862 for 21 sqft less living space and -$4,111 for being older. Net adjustment: -$8,973.
Adjusted -$66,222 for 286 sqft less living space. Net adjustment: -$66,222.
Adjusted +$131,287 for 567 sqft more living space and -$4,111 for being older. Net adjustment: +$127,176.
Adjusted -$3,936 for 17 sqft less living space and +$12,334 for being newer. Net adjustment: +$8,398.
The Neighborhood
This home is in line with the R409599G - STONEY BROOK - ALL SECTIONS median of $328,056. Note that values in this subdivision declined 4.7% over the past year.
R409599G - STONEY BROOK - ALL SECTIONS
typicalThis home is -0.9% below the subdivision median.
Tax Analysis
The estimated annual property tax is $5,851 across all districts. With a homestead exemption claimed, that drops to $4,540 — saving $1,311 per year. That's $378 per month a buyer should budget. The assessed value increased +2.6% vs the subdivision average of -4.7%. This above-average increase gives a protest opportunity score of 37 out of 100 — it may be worth challenging the appraisal.
Tax Districts
| District | Type | Rate | Annual Amount |
|---|---|---|---|
| Round Rock ISD | School | 0.8931% | $2,904 |
| Round Rock | City | 0.3720% | $1,210 |
| Williamson County | County | 0.3694% | $1,201 |
| Austin Community College | special | 0.1034% | $336 |
| Williamson County FM/Rd | County | 0.0443% | $144 |
| Upper Brushy Creek WCID | Water | 0.0170% | $55 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 1.7993% | $5,851 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $317,762 would pay approximately $1,983 per month (principal and interest only, excluding taxes and insurance).