4520 POST LOOP, ROUND ROCK, TX 78681
ROUND ROCK, 78681 — williamson County
Property at a Glance
This home is estimated between $478,618 and $643,074, with a best estimate of $480,588. 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
$480,588
$476,083
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 $478,618 and $643,074. All 5 comparables are in the same subdivision, giving this estimate high confidence.
Comparable Properties (5)
Adjusted +$40,345 for 182 sqft more living space. Net adjustment: +$40,345.
Adjusted +$20,616 for 93 sqft more living space and +$1,826 for being newer. Net adjustment: +$22,442.
Adjusted +$13,522 for 61 sqft more living space and +$9,130 for being newer. Net adjustment: +$22,652.
Adjusted -$15,074 for 68 sqft less living space and +$9,130 for being newer. Net adjustment: -$5,944.
Adjusted -$14,630 for 66 sqft less living space and +$10,957 for being newer. Net adjustment: -$3,673.
The Neighborhood
This home is valued 9.0% 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 -9.0% below the subdivision median.
Tax Analysis
The estimated annual property tax is $9,837 across all districts. With a homestead exemption claimed, that drops to $8,278 — saving $1,559 per year. That's $690 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% | $5,002 |
| Highlands at Mayfield Ranch MUD | MUD | 0.4850% | $2,309 |
| Williamson County | County | 0.3694% | $1,759 |
| Williamson County ESD #9 - Round Rock | ESD | 0.0999% | $476 |
| Williamson County FM/Rd | County | 0.0443% | $211 |
| Upper Brushy Creek WCID | Water | 0.0170% | $81 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 2.0663% | $9,837 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $480,588 would pay approximately $3,000 per month (principal and interest only, excluding taxes and insurance).