Beta Williamson County, TX only — data and coverage are limited during early access.

4128 PRESIDIO LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,635 sqftBuilt 2018

Property at a Glance

This home is estimated between $344,015 and $520,148, with a best estimate of $433,313. 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

$344,015 $520,148
Best Estimate
$433,313
WCAD Value
$398,562
Medium Confidence

Based on 5 comparable properties(3 in the same subdivision)

Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $344,015 and $520,148. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

3601 BAINBRIDGE ST, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,916 sqft Built 2016
Raw Value $578,786
Adjusted Value $520,148

Adjusted -$62,290 for 281 sqft less living space and +$3,652 for being newer. Net adjustment: -$58,638.

4149 PRESIDIO LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,248 sqft Built 2018
Raw Value $479,901
Adjusted Value $344,015

Adjusted -$135,886 for 613 sqft less living space. Net adjustment: -$135,886.

3736 BAINBRIDGE ST, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,916 sqft Built 2014
Raw Value $562,011
Adjusted Value $507,025

Adjusted -$62,290 for 281 sqft less living space and +$7,304 for being newer. Net adjustment: -$54,986.

3 bed 2 bath 1,585 sqft Built 1997
Raw Value $383,881
Adjusted Value $433,313

Adjusted +$11,084 for 50 sqft more living space and +$38,348 for being newer. Net adjustment: +$49,432.

3 bed 2 bath 1,675 sqft Built 1995
Raw Value $367,941
Adjusted Value $401,074

Adjusted -$8,867 for 40 sqft less living space and +$42,000 for being newer. Net adjustment: +$33,133.

The Neighborhood

This home is valued 23.8% 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

below average
1,093 Properties
$523,371 Median Value
-9.3% YoY Change
1% Have Pool
100% Have Garage
This Home
$398,562
Median
$523,371

This home is -23.8% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,235 across all districts. With a homestead exemption claimed, that drops to $6,691 — saving $1,544 per year. That's $558 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%$4,187
Highlands at Mayfield Ranch MUDMUD0.4850%$1,933
Williamson CountyCounty0.3694%$1,472
Williamson County ESD #9 - Round RockESD0.0999%$398
Williamson County FM/RdCounty0.0443%$177
Upper Brushy Creek WCIDWater0.0170%$68
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$8,235

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $433,313 would pay approximately $2,705 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.

View full property details