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2018 WESTVALLEY PL, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

5 bed4 bath3,241 sqftBuilt 2007

Property at a Glance

This home is estimated between $586,455 and $1,069,336, with a best estimate of $696,368. That places the property above the R420606C - TERAVISTA R5 median of $646,108, in a neighborhood that appreciated 2.5% over the past year.

Estimated Value Range

$586,455 $1,069,336
Best Estimate
$696,368
WCAD Value
$713,830
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R420606C - TERAVISTA R5. The estimated range of $586,455 and $1,069,336 should be treated as a rough guide.

Comparable Properties (5)

4 bed 4 bath 3,213 sqft Built 2015
Raw Value $1,112,098
Adjusted Value $1,069,336

Adjusted +$8,102 for 28 sqft more living space and -$50,864 for being older. Net adjustment: -$42,762.

4 bed 3 bath 2,928 sqft Built 2016
Raw Value $553,112
Adjusted Value $586,455

Adjusted +$90,565 for 313 sqft more living space and -$57,222 for being older. Net adjustment: +$33,343.

4 bed 4 bath 4,085 sqft Built 2017
Raw Value $1,070,660
Adjusted Value $762,873

Adjusted -$244,207 for 844 sqft less living space and -$63,580 for being older. Net adjustment: -$307,787.

4 bed 3 bath 2,754 sqft Built 2017
Raw Value $619,037
Adjusted Value $696,368

Adjusted +$140,911 for 487 sqft more living space and -$63,580 for being older. Net adjustment: +$77,331.

4 bed 3 bath 2,828 sqft Built 2022
Raw Value $630,988
Adjusted Value $655,118

Adjusted +$119,500 for 413 sqft more living space and -$95,370 for being older. Net adjustment: +$24,130.

The Neighborhood

This home is valued 10.5% above the R420606C - TERAVISTA R5 median of $646,108. With 622 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 2.5% over the past year.

R420606C - TERAVISTA R5

typical
622 Properties
$646,108 Median Value
+2.5% YoY Change
1% Have Pool
99% Have Garage
This Home
$713,830
Median
$646,108

This home is +10.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,511 across all districts. With a homestead exemption claimed, that drops to $12,129 — saving $1,382 per year. That's $1,011 per month a buyer should budget. The assessed value increased +8.2% vs the subdivision average of +2.5%. This above-average increase gives a protest opportunity score of 49 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$6,375
Williamson CountyCounty0.3694%$2,637
Williamson County MUD #11MUD0.3656%$2,610
Austin Community Collegespecial0.1034%$738
Williamson County ESD #9 - Round RockESD0.0999%$713
Williamson County FM/RdCounty0.0443%$316
Upper Brushy Creek WCIDWater0.0170%$121
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8928%$13,511
49 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $696,368 would pay approximately $4,347 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 4/19/2026.

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