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3840 MAYFIELD RANCH BLVD, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,107 sqftBuilt 2005

Property at a Glance

This home is estimated between $231,016 and $626,760, with a best estimate of $376,389. That places the property above the R107503F - PRESERVE AT STONE OAK - PH 3 & 4 median of $368,194, in a neighborhood that declined 10.9% over the past year.

Estimated Value Range

$231,016 $626,760
Best Estimate
$376,389
WCAD Value
$389,090
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $231,016 and $626,760. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

3880 MAYFIELD RANCH BLVD, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 959 sqft Built 2005
Raw Value $372,608
Adjusted Value $402,737

Adjusted +$30,129 for 148 sqft more living space. Net adjustment: +$30,129.

3870 MAYFIELD RANCH BLVD, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,726 sqft Built 2005
Raw Value $357,028
Adjusted Value $231,016

Adjusted -$126,012 for 619 sqft less living space. Net adjustment: -$126,012.

3810 MAYFIELD RANCH BLVD, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,261 sqft Built 2005
Raw Value $378,400
Adjusted Value $347,050

Adjusted -$31,350 for 154 sqft less living space. Net adjustment: -$31,350.

3890 MAYFIELD RANCH BLVD, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,120 sqft Built 2005
Raw Value $379,035
Adjusted Value $376,389

Adjusted -$2,646 for 13 sqft less living space. Net adjustment: -$2,646.

4 bed 2 bath 1,022 sqft Built 1975
Raw Value $651,479
Adjusted Value $626,760

Adjusted +$17,304 for 85 sqft more living space and -$42,023 for being older. Net adjustment: -$24,719.

The Neighborhood

This home is valued 5.7% above the R107503F - PRESERVE AT STONE OAK - PH 3 & 4 median of $368,194. With 1,045 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 10.9% over the past year.

R107503F - PRESERVE AT STONE OAK - PH 3 & 4

typical
1,045 Properties
$368,194 Median Value
-10.9% YoY Change
1% Have Pool
99% Have Garage
This Home
$389,090
Median
$368,194

This home is +5.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,001 across all districts. With a homestead exemption claimed, that drops to $5,679 — saving $1,322 per year. That's $473 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
Round Rock ISDSchool0.8931%$3,475
Round RockCity0.3720%$1,447
Williamson CountyCounty0.3694%$1,437
Austin Community Collegespecial0.1034%$402
Williamson County FM/RdCounty0.0443%$172
Upper Brushy Creek WCIDWater0.0170%$66
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,001

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $376,389 would pay approximately $2,349 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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