4521 POST LOOP, ROUND ROCK, TX 78681
ROUND ROCK, 78681 — williamson County
Property at a Glance
This home is estimated between $489,923 and $654,379, with a best estimate of $491,893. That places the property below the G799514C - MAYFIELD RANCH median of $523,371, in a neighborhood that declined 9.3% over the past year.
Estimated Value Range
$491,893
$487,592
Based on 5 comparable properties(5 in the same subdivision)
Based on 5 comparable properties in G799514C - MAYFIELD RANCH, this home's estimated market value is between $489,923 and $654,379. All 5 comparables are in the same subdivision, giving this estimate high confidence.
Comparable Properties (5)
Adjusted +$51,650 for 233 sqft more living space. Net adjustment: +$51,650.
Adjusted +$31,921 for 144 sqft more living space and +$1,826 for being newer. Net adjustment: +$33,747.
Adjusted +$24,827 for 112 sqft more living space and +$9,130 for being newer. Net adjustment: +$33,957.
Adjusted -$3,768 for 17 sqft less living space and +$9,130 for being newer. Net adjustment: +$5,362.
Adjusted -$3,325 for 15 sqft less living space and +$10,957 for being newer. Net adjustment: +$7,632.
The Neighborhood
This home is valued 6.8% below the G799514C - MAYFIELD RANCH median of $523,371. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 9.3% over the past year.
G799514C - MAYFIELD RANCH
typicalThis home is -6.8% below the subdivision median.
Tax Analysis
The estimated annual property tax is $10,075 across all districts. With a homestead exemption claimed, that drops to $8,514 — saving $1,561 per year. That's $710 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 |
|---|---|---|---|
| Georgetown ISD | School | 1.0506% | $5,123 |
| Highlands at Mayfield Ranch MUD | MUD | 0.4850% | $2,365 |
| Williamson County | County | 0.3694% | $1,801 |
| Williamson County ESD #9 - Round Rock | ESD | 0.0999% | $487 |
| Williamson County FM/Rd | County | 0.0443% | $216 |
| Upper Brushy Creek WCID | Water | 0.0170% | $83 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 2.0663% | $10,075 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $491,893 would pay approximately $3,070 per month (principal and interest only, excluding taxes and insurance).