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

3920 ORION ST, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,282 sqftBuilt 1999

Property at a Glance

This home is estimated between $170,510 and $391,463, with a best estimate of $248,734. That places the property below the R407595G - Vista Heights & Indian Ridge median of $325,945, in a neighborhood that declined 9.5% over the past year.

Estimated Value Range

$170,510 $391,463
Best Estimate
$248,734
WCAD Value
$367,170
High Confidence

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

Based on 5 comparable properties in R407595G - Vista Heights & Indian Ridge, this home's estimated market value is between $170,510 and $391,463. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3922 ORION ST, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
3 bed 2 bath 2,209 sqft Built 1999
Raw Value $346,089
Adjusted Value $170,510

Adjusted -$175,579 for 927 sqft less living space. Net adjustment: -$175,579.

3918 ORION ST, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
4 bed 2 bath 1,327 sqft Built 1999
Raw Value $399,986
Adjusted Value $391,463

Adjusted -$8,523 for 45 sqft less living space. Net adjustment: -$8,523.

3924 ORION ST, ROUND ROCK, TX 78665
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,793 sqft Built 1999
Raw Value $353,009
Adjusted Value $256,223

Adjusted -$96,786 for 511 sqft less living space. Net adjustment: -$96,786.

3919 ORION ST, ROUND ROCK, TX 78665
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,604 sqft Built 1996
Raw Value $303,247
Adjusted Value $246,479

Adjusted -$60,989 for 322 sqft less living space and +$4,221 for being newer. Net adjustment: -$56,768.

3916 ORION ST, ROUND ROCK, TX 78665
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,508 sqft Built 1999
Raw Value $291,540
Adjusted Value $248,734

Adjusted -$42,806 for 226 sqft less living space. Net adjustment: -$42,806.

The Neighborhood

This home is valued 12.6% above the R407595G - Vista Heights & Indian Ridge median of $325,945. With 261 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 9.5% over the past year.

R407595G - Vista Heights & Indian Ridge

typical
261 Properties
$325,945 Median Value
-9.5% YoY Change
2% Have Pool
100% Have Garage
This Home
$367,170
Median
$325,945

This home is +12.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,606 across all districts. With a homestead exemption claimed, that drops to $5,288 — saving $1,318 per year. That's $441 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%$3,279
Round RockCity0.3720%$1,366
Williamson CountyCounty0.3694%$1,356
Austin Community Collegespecial0.1034%$380
Williamson County FM/RdCounty0.0443%$163
Upper Brushy Creek WCIDWater0.0170%$62
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,606

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $248,734 would pay approximately $1,553 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