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4026 MASON CV, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath1,881 sqftBuilt 2015

Property at a Glance

This home is estimated between $371,665 and $711,608, with a best estimate of $397,248. 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

$371,665 $711,608
Best Estimate
$397,248
WCAD Value
$557,933
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 $371,665 and $711,608. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

4017 MASON CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,810 sqft Built 2015
Raw Value $514,225
Adjusted Value $529,964

Adjusted +$15,739 for 71 sqft more living space. Net adjustment: +$15,739.

4025 MASON CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,241 sqft Built 2015
Raw Value $477,050
Adjusted Value $397,248

Adjusted -$79,802 for 360 sqft less living space. Net adjustment: -$79,802.

4030 MASON CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,311 sqft Built 2016
Raw Value $482,132
Adjusted Value $384,986

Adjusted -$95,320 for 430 sqft less living space and -$1,826 for being older. Net adjustment: -$97,146.

4029 MASON CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,662 sqft Built 2014
Raw Value $542,966
Adjusted Value $371,665

Adjusted -$173,127 for 781 sqft less living space and +$1,826 for being newer. Net adjustment: -$171,301.

4 bed 3 bath 1,890 sqft Built 2001
Raw Value $688,038
Adjusted Value $711,608

Adjusted -$1,995 for 9 sqft less living space and +$25,565 for being newer. Net adjustment: +$23,570.

The Neighborhood

This home is valued 6.6% 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
$557,933
Median
$523,371

This home is +6.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,528 across all districts. With a homestead exemption claimed, that drops to $9,955 — saving $1,573 per year. That's $830 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%$5,862
Highlands at Mayfield Ranch MUDMUD0.4850%$2,706
Williamson CountyCounty0.3694%$2,061
Williamson County ESD #9 - Round RockESD0.0999%$557
Williamson County FM/RdCounty0.0443%$247
Upper Brushy Creek WCIDWater0.0170%$95
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$11,528

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $397,248 would pay approximately $2,480 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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