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3812 SIR NOAH TUCKER DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,275 sqftBuilt 2021

Property at a Glance

This home is estimated between $421,247 and $835,309, with a best estimate of $735,880. 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

$421,247 $835,309
Best Estimate
$735,880
WCAD Value
$643,286
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 $421,247 and $835,309 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 2,340 sqft Built 2000
Raw Value $777,120
Adjusted Value $801,059

Adjusted -$14,409 for 65 sqft less living space and +$38,348 for being newer. Net adjustment: +$23,939.

4 bed 3 bath 2,356 sqft Built 2000
Raw Value $474,981
Adjusted Value $495,373

Adjusted -$17,956 for 81 sqft less living space and +$38,348 for being newer. Net adjustment: +$20,392.

3804 KYLER GLEN RD, ROUND ROCK, TX 78681
0.00 mi 94% similar Same subdivision
3 bed 2 bath 3,206 sqft Built 2016
Raw Value $618,495
Adjusted Value $421,247

Adjusted -$206,378 for 931 sqft less living space and +$9,130 for being newer. Net adjustment: -$197,248.

4 bed 3 bath 2,047 sqft Built 2000
Raw Value $746,419
Adjusted Value $835,309

Adjusted +$50,542 for 228 sqft more living space and +$38,348 for being newer. Net adjustment: +$88,890.

4 bed 3 bath 2,000 sqft Built 2001
Raw Value $638,398
Adjusted Value $735,880

Adjusted +$60,960 for 275 sqft more living space and +$36,522 for being newer. Net adjustment: +$97,482.

The Neighborhood

This home is valued 22.9% 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
$643,286
Median
$523,371

This home is +22.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,292 across all districts. With a homestead exemption claimed, that drops to $11,702 — saving $1,590 per year. That's $975 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%$6,758
Highlands at Mayfield Ranch MUDMUD0.4850%$3,120
Williamson CountyCounty0.3694%$2,377
Williamson County ESD #9 - Round RockESD0.0999%$643
Williamson County FM/RdCounty0.0443%$285
Upper Brushy Creek WCIDWater0.0170%$109
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$13,292

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $735,880 would pay approximately $4,593 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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