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

8003 MAGIC MOUNTAIN CV, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath1,305 sqftBuilt 2000

Property at a Glance

This home is estimated between $418,205 and $504,308, with a best estimate of $485,766. That places the property below the R292598D - Stone Canyon - Weekley & Newmark median of $523,036, in a neighborhood that declined 5.2% over the past year.

Estimated Value Range

$418,205 $504,308
Best Estimate
$485,766
WCAD Value
$547,678
Low Confidence

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

There are 5 comparable properties within range, but none are in R292598D - Stone Canyon - Weekley & Newmark. The estimated range of $418,205 and $504,308 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 1,440 sqft Built 2006
Raw Value $555,922
Adjusted Value $504,308

Adjusted -$45,042 for 135 sqft less living space and -$6,572 for being older. Net adjustment: -$51,614.

4 bed 2 bath 1,413 sqft Built 2007
Raw Value $481,433
Adjusted Value $437,732

Adjusted -$36,034 for 108 sqft less living space and -$7,667 for being older. Net adjustment: -$43,701.

4 bed 2 bath 1,509 sqft Built 2007
Raw Value $579,141
Adjusted Value $503,410

Adjusted -$68,064 for 204 sqft less living space and -$7,667 for being older. Net adjustment: -$75,731.

4 bed 2 bath 1,112 sqft Built 1993
Raw Value $413,706
Adjusted Value $485,766

Adjusted +$64,393 for 193 sqft more living space and +$7,667 for being newer. Net adjustment: +$72,060.

4 bed 2 bath 1,483 sqft Built 2011
Raw Value $489,643
Adjusted Value $418,205

Adjusted -$59,389 for 178 sqft less living space and -$12,049 for being older. Net adjustment: -$71,438.

The Neighborhood

This home is valued 4.7% above the R292598D - Stone Canyon - Weekley & Newmark median of $523,036. With 952 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 5.2% over the past year.

R292598D - Stone Canyon - Weekley & Newmark

typical
952 Properties
$523,036 Median Value
-5.2% YoY Change
1% Have Pool
99% Have Garage
This Home
$547,678
Median
$523,036

This home is +4.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,350 across all districts. With a homestead exemption claimed, that drops to $7,999 — saving $1,351 per year. That's $667 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%$4,891
Williamson CountyCounty0.3694%$2,023
Fern Bluff MUDMUD0.1800%$986
Austin Community Collegespecial0.1034%$566
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$548
Williamson County FM/RdCounty0.0443%$243
Upper Brushy Creek WCIDWater0.0170%$93
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7073%$9,350

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $485,766 would pay approximately $3,032 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