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4549 POST LOOP, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,828 sqftBuilt 2021

Property at a Glance

This home is estimated between $395,047 and $595,051, with a best estimate of $397,017. 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

$395,047 $595,051
Best Estimate
$397,017
WCAD Value
$606,319
High Confidence

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 $395,047 and $595,051. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

4582 POST LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,023 sqft Built 2021
Raw Value $602,729
Adjusted Value $559,503

Adjusted -$43,226 for 195 sqft less living space. Net adjustment: -$43,226.

4609 POST LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,112 sqft Built 2020
Raw Value $458,146
Adjusted Value $397,017

Adjusted -$62,955 for 284 sqft less living space and +$1,826 for being newer. Net adjustment: -$61,129.

3625 ASHBURY RD, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,273 sqft Built 2016
Raw Value $485,139
Adjusted Value $395,624

Adjusted -$98,645 for 445 sqft less living space and +$9,130 for being newer. Net adjustment: -$89,515.

3712 ASHBURY RD, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,271 sqft Built 2015
Raw Value $482,291
Adjusted Value $395,047

Adjusted -$98,201 for 443 sqft less living space and +$10,957 for being newer. Net adjustment: -$87,244.

3864 ASHBURY RD, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,745 sqft Built 2015
Raw Value $565,695
Adjusted Value $595,051

Adjusted +$18,399 for 83 sqft more living space and +$10,957 for being newer. Net adjustment: +$29,356.

The Neighborhood

This home is valued 15.8% above the G799514C - MAYFIELD RANCH median of $523,371. With 1,093 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 9.3% over the past year.

G799514C - MAYFIELD RANCH

above average
1,093 Properties
$523,371 Median Value
-9.3% YoY Change
1% Have Pool
100% Have Garage
This Home
$606,319
Median
$523,371

This home is +15.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,528 across all districts. With a homestead exemption claimed, that drops to $10,945 — saving $1,583 per year. That's $912 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

DistrictTypeRateAnnual Amount
Georgetown ISDSchool1.0506%$6,370
Highlands at Mayfield Ranch MUDMUD0.4850%$2,941
Williamson CountyCounty0.3694%$2,240
Williamson County ESD #9 - Round RockESD0.0999%$606
Williamson County FM/RdCounty0.0443%$269
Upper Brushy Creek WCIDWater0.0170%$103
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$12,528

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $397,017 would pay approximately $2,478 per month (principal and interest only, excluding taxes and insurance).

Data sourced from Williamson County Appraisal District (WCAD), Texas Education Agency (TEA), and Federal Reserve Economic Data (FRED). Assessment values reflect the appraisal district's estimate, not market sale prices. Report generated 4/18/2026.

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