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4017 MASON CV, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath1,810 sqftBuilt 2015

Property at a Glance

This home is estimated between $355,926 and $695,869, with a best estimate of $381,509. 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

$355,926 $695,869
Best Estimate
$381,509
WCAD Value
$514,225
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 $355,926 and $695,869. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

4026 MASON CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,881 sqft Built 2015
Raw Value $557,933
Adjusted Value $542,194

Adjusted -$15,739 for 71 sqft less living space. Net adjustment: -$15,739.

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 $369,248

Adjusted -$111,058 for 501 sqft less living space and -$1,826 for being older. Net adjustment: -$112,884.

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 $355,926

Adjusted -$188,866 for 852 sqft less living space and +$1,826 for being newer. Net adjustment: -$187,040.

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 $381,509

Adjusted -$95,541 for 431 sqft less living space. Net adjustment: -$95,541.

4 bed 3 bath 1,890 sqft Built 2001
Raw Value $688,038
Adjusted Value $695,869

Adjusted -$17,734 for 80 sqft less living space and +$25,565 for being newer. Net adjustment: +$7,831.

The Neighborhood

This home is valued 1.7% 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

typical
1,093 Properties
$523,371 Median Value
-9.3% YoY Change
1% Have Pool
100% Have Garage
This Home
$514,225
Median
$523,371

This home is -1.7% below the subdivision median.

Tax Analysis

The estimated annual property tax is $10,625 across all districts. With a homestead exemption claimed, that drops to $9,060 — saving $1,565 per year. That's $755 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%$5,402
Highlands at Mayfield Ranch MUDMUD0.4850%$2,494
Williamson CountyCounty0.3694%$1,900
Williamson County ESD #9 - Round RockESD0.0999%$514
Williamson County FM/RdCounty0.0443%$228
Upper Brushy Creek WCIDWater0.0170%$87
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$10,625

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $381,509 would pay approximately $2,381 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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