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3816 SIR NOAH TUCKER DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,674 sqftBuilt 2021

Property at a Glance

This home is estimated between $503,164 and $889,507, with a best estimate of $583,821. That places the property above the G799514C - MAYFIELD RANCH median of $523,371, in a neighborhood that declined 9.3% over the past year.

Estimated Value Range

$503,164 $889,507
Best Estimate
$583,821
WCAD Value
$540,437
Low Confidence

Based on 5 comparable properties(1 in the same subdivision)

There are 5 comparable properties within range, but few are in G799514C - MAYFIELD RANCH. The estimated range of $503,164 and $889,507 should be treated as a rough guide.

Comparable Properties (5)

3804 KYLER GLEN RD, ROUND ROCK, TX 78681
0.00 mi 98% similar Same subdivision
3 bed 2 bath 3,206 sqft Built 2016
Raw Value $618,495
Adjusted Value $509,695

Adjusted -$117,930 for 532 sqft less living space and +$9,130 for being newer. Net adjustment: -$108,800.

4 bed 3 bath 2,356 sqft Built 2000
Raw Value $474,981
Adjusted Value $583,821

Adjusted +$70,492 for 318 sqft more living space and +$38,348 for being newer. Net adjustment: +$108,840.

4 bed 3 bath 2,340 sqft Built 2000
Raw Value $777,120
Adjusted Value $889,507

Adjusted +$74,039 for 334 sqft more living space and +$38,348 for being newer. Net adjustment: +$112,387.

4 bed 3 bath 3,156 sqft Built 2000
Raw Value $821,031
Adjusted Value $752,532

Adjusted -$106,847 for 482 sqft less living space and +$38,348 for being newer. Net adjustment: -$68,499.

4 bed 2 bath 2,551 sqft Built 2001
Raw Value $439,376
Adjusted Value $503,164

Adjusted +$27,266 for 123 sqft more living space and +$36,522 for being newer. Net adjustment: +$63,788.

The Neighborhood

This home is valued 3.3% 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

typical
1,093 Properties
$523,371 Median Value
-9.3% YoY Change
1% Have Pool
100% Have Garage
This Home
$540,437
Median
$523,371

This home is +3.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,167 across all districts. With a homestead exemption claimed, that drops to $9,596 — saving $1,571 per year. That's $800 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%$5,678
Highlands at Mayfield Ranch MUDMUD0.4850%$2,621
Williamson CountyCounty0.3694%$1,997
Williamson County ESD #9 - Round RockESD0.0999%$540
Williamson County FM/RdCounty0.0443%$240
Upper Brushy Creek WCIDWater0.0170%$92
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$11,167

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $583,821 would pay approximately $3,644 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 4/19/2026.

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