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4018 MAYFIELD CAVE TRL, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,953 sqftBuilt 2000

Property at a Glance

This home is estimated between $302,166 and $395,053, with a best estimate of $340,481. That places the property below 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

$302,166 $395,053
Best Estimate
$340,481
WCAD Value
$389,713
High Confidence

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

Based on 5 comparable properties in R107503F - PRESERVE AT STONE OAK - PH 3 & 4, this home's estimated market value is between $302,166 and $395,053. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

4007 MAYFIELD CAVE TRL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,208 sqft Built 2000
Raw Value $370,801
Adjusted Value $318,890

Adjusted -$51,911 for 255 sqft less living space. Net adjustment: -$51,911.

4008 MAYFIELD CAVE TRL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,346 sqft Built 2000
Raw Value $382,170
Adjusted Value $302,166

Adjusted -$80,004 for 393 sqft less living space. Net adjustment: -$80,004.

4017 MAYFIELD CAVE TRL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,208 sqft Built 2006
Raw Value $383,987
Adjusted Value $340,481

Adjusted -$51,911 for 255 sqft less living space and +$8,405 for being newer. Net adjustment: -$43,506.

4003 MAYFIELD CAVE TRL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,455 sqft Built 2000
Raw Value $293,674
Adjusted Value $395,053

Adjusted +$101,379 for 498 sqft more living space. Net adjustment: +$101,379.

4001 MAYFIELD CAVE TRL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,682 sqft Built 2000
Raw Value $330,806
Adjusted Value $385,974

Adjusted +$55,168 for 271 sqft more living space. Net adjustment: +$55,168.

The Neighborhood

This home is valued 5.8% 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
$389,713
Median
$368,194

This home is +5.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,012 across all districts. With a homestead exemption claimed, that drops to $5,690 — saving $1,322 per year. That's $474 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%$3,481
Round RockCity0.3720%$1,450
Williamson CountyCounty0.3694%$1,440
Austin Community Collegespecial0.1034%$403
Williamson County FM/RdCounty0.0443%$173
Upper Brushy Creek WCIDWater0.0170%$66
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,012

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $340,481 would pay approximately $2,125 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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