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

3003 E LUMINOSO LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath1,943 sqftBuilt 2003

Property at a Glance

This home is estimated between $607,122 and $815,630, with a best estimate of $776,505. That places the property above the R101506D - Sendero Springs Sec 4,5 East of SS Dr. median of $692,215, in a neighborhood that appreciated 3.8% over the past year.

Estimated Value Range

$607,122 $815,630
Best Estimate
$776,505
WCAD Value
$728,802
Low Confidence

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

There are 5 comparable properties within range, but none are in R101506D - Sendero Springs Sec 4,5 East of SS Dr.. The estimated range of $607,122 and $815,630 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 1,916 sqft Built 2014
Raw Value $562,011
Adjusted Value $607,122

Adjusted +$9,959 for 27 sqft more living space and +$35,152 for being newer. Net adjustment: +$45,111.

4 bed 3 bath 2,154 sqft Built 2001
Raw Value $860,722
Adjusted Value $776,505

Adjusted -$77,826 for 211 sqft less living space and -$6,391 for being older. Net adjustment: -$84,217.

4 bed 3 bath 1,916 sqft Built 2016
Raw Value $578,786
Adjusted Value $630,288

Adjusted +$9,959 for 27 sqft more living space and +$41,543 for being newer. Net adjustment: +$51,502.

4 bed 3 bath 2,219 sqft Built 2007
Raw Value $904,649
Adjusted Value $815,630

Adjusted -$101,801 for 276 sqft less living space and +$12,782 for being newer. Net adjustment: -$89,019.

4 bed 3 bath 1,811 sqft Built 2014
Raw Value $702,015
Adjusted Value $785,855

Adjusted +$48,688 for 132 sqft more living space and +$35,152 for being newer. Net adjustment: +$83,840.

The Neighborhood

This home is valued 5.3% above the R101506D - Sendero Springs Sec 4,5 East of SS Dr. median of $692,215. With 299 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 3.8% over the past year.

R101506D - Sendero Springs Sec 4,5 East of SS Dr.

typical
299 Properties
$692,215 Median Value
+3.8% YoY Change
0% Have Pool
97% Have Garage
This Home
$728,802
Median
$692,215

This home is +5.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,781 across all districts. With a homestead exemption claimed, that drops to $12,398 — saving $1,383 per year. That's $1,033 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%$6,430
Brushy Creek MUDMUD0.3868%$2,785
Williamson CountyCounty0.3694%$2,660
Austin Community Collegespecial0.1034%$744
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$720
Williamson County FM/RdCounty0.0443%$319
Upper Brushy Creek WCIDWater0.0170%$122
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9141%$13,781

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $776,505 would pay approximately $4,847 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