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

4150 KINGSLEY AVE, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,992 sqftBuilt 2017

Property at a Glance

This home is estimated between $423,443 and $593,418, with a best estimate of $462,873. 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

$423,443 $593,418
Best Estimate
$462,873
WCAD Value
$436,390
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 $423,443 and $593,418. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

4472 ARQUES AVE, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,828 sqft Built 2019
Raw Value $555,593
Adjusted Value $588,295

Adjusted +$36,354 for 164 sqft more living space and -$3,652 for being older. Net adjustment: +$32,702.

4118 KINGSLEY AVE, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,678 sqft Built 2017
Raw Value $523,813
Adjusted Value $593,418

Adjusted +$69,605 for 314 sqft more living space. Net adjustment: +$69,605.

4305 ARQUES AVE, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,725 sqft Built 2020
Raw Value $409,164
Adjusted Value $462,873

Adjusted +$59,187 for 267 sqft more living space and -$5,478 for being older. Net adjustment: +$53,709.

4308 ARQUES AVE, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2,178 sqft Built 2019
Raw Value $468,326
Adjusted Value $423,443

Adjusted -$41,231 for 186 sqft less living space and -$3,652 for being older. Net adjustment: -$44,883.

4218 ARQUES AVE, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
2 bed 2 bath 2,217 sqft Built 2020
Raw Value $488,687
Adjusted Value $433,333

Adjusted -$49,876 for 225 sqft less living space and -$5,478 for being older. Net adjustment: -$55,354.

The Neighborhood

This home is valued 16.6% 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

below average
1,093 Properties
$523,371 Median Value
-9.3% YoY Change
1% Have Pool
100% Have Garage
This Home
$436,390
Median
$523,371

This home is -16.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,017 across all districts. With a homestead exemption claimed, that drops to $7,466 — saving $1,551 per year. That's $622 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%$4,585
Highlands at Mayfield Ranch MUDMUD0.4850%$2,116
Williamson CountyCounty0.3694%$1,612
Williamson County ESD #9 - Round RockESD0.0999%$436
Williamson County FM/RdCounty0.0443%$193
Upper Brushy Creek WCIDWater0.0170%$74
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$9,017

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $462,873 would pay approximately $2,889 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