Beta Williamson County, TX only — data and coverage are limited during early access.

4127 VAN NESS AVE, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath1,678 sqftBuilt 2017

Property at a Glance

This home is estimated between $351,491 and $589,468, with a best estimate of $466,268. 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

$351,491 $589,468
Best Estimate
$466,268
WCAD Value
$523,813
High Confidence

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

Based on 5 comparable properties in G799514C - MAYFIELD RANCH, this home's estimated market value is between $351,491 and $589,468. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

4148 VAN NESS AVE, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,801 sqft Built 2017
Raw Value $493,534
Adjusted Value $466,268

Adjusted -$27,266 for 123 sqft less living space. Net adjustment: -$27,266.

4144 VAN NESS AVE, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,156 sqft Built 2017
Raw Value $459,163
Adjusted Value $574,876

Adjusted +$115,713 for 522 sqft more living space. Net adjustment: +$115,713.

4115 VAN NESS AVE, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,805 sqft Built 2017
Raw Value $409,168
Adjusted Value $381,015

Adjusted -$28,153 for 127 sqft less living space. Net adjustment: -$28,153.

4159 VAN NESS AVE, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,292 sqft Built 2017
Raw Value $487,598
Adjusted Value $351,491

Adjusted -$136,107 for 614 sqft less living space. Net adjustment: -$136,107.

4110 VAN NESS AVE, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,166 sqft Built 2017
Raw Value $475,971
Adjusted Value $589,468

Adjusted +$113,497 for 512 sqft more living space. Net adjustment: +$113,497.

The Neighborhood

This home is in line with the G799514C - MAYFIELD RANCH median of $523,371. 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
$523,813
Median
$523,371

This home is +0.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,823 across all districts. With a homestead exemption claimed, that drops to $9,256 — saving $1,567 per year. That's $771 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%$5,503
Highlands at Mayfield Ranch MUDMUD0.4850%$2,540
Williamson CountyCounty0.3694%$1,935
Williamson County ESD #9 - Round RockESD0.0999%$523
Williamson County FM/RdCounty0.0443%$232
Upper Brushy Creek WCIDWater0.0170%$89
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$10,823

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $466,268 would pay approximately $2,910 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.

View full property details