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

3324 MARCASITE DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,102 sqftBuilt 2009

Property at a Glance

This home is estimated between $707,119 and $889,819, with a best estimate of $751,684. That places the property below the R147606C - WALSH RANCH median of $933,667, in a neighborhood that declined 4.6% over the past year.

Estimated Value Range

$707,119 $889,819
Best Estimate
$751,684
WCAD Value
$874,957
Low Confidence

Based on 5 comparable properties(1 in the same subdivision)

There are 5 comparable properties within range, but few are in R147606C - WALSH RANCH. The estimated range of $707,119 and $889,819 should be treated as a rough guide.

Comparable Properties (5)

3323 MARCASITE DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,219 sqft Built 2007
Raw Value $904,649
Adjusted Value $829,284

Adjusted -$47,575 for 117 sqft less living space and -$27,790 for being older. Net adjustment: -$75,365.

4 bed 3 bath 2,154 sqft Built 2001
Raw Value $860,722
Adjusted Value $728,416

Adjusted -$21,145 for 52 sqft less living space and -$111,161 for being older. Net adjustment: -$132,306.

4 bed 3 bath 1,916 sqft Built 2014
Raw Value $562,011
Adjusted Value $707,119

Adjusted +$75,632 for 186 sqft more living space and +$69,476 for being newer. Net adjustment: +$145,108.

4 bed 3 bath 1,916 sqft Built 2016
Raw Value $578,786
Adjusted Value $751,684

Adjusted +$75,632 for 186 sqft more living space and +$97,266 for being newer. Net adjustment: +$172,898.

4 bed 3 bath 1,811 sqft Built 2014
Raw Value $702,015
Adjusted Value $889,819

Adjusted +$118,328 for 291 sqft more living space and +$69,476 for being newer. Net adjustment: +$187,804.

The Neighborhood

This home is valued 6.3% below the R147606C - WALSH RANCH median of $933,667. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 4.6% over the past year.

R147606C - WALSH RANCH

typical
239 Properties
$933,667 Median Value
-4.6% YoY Change
0% Have Pool
100% Have Garage
This Home
$874,957
Median
$933,667

This home is -6.3% below the subdivision median.

Tax Analysis

The estimated annual property tax is $16,122 across all districts. With a homestead exemption claimed, that drops to $14,713 — saving $1,409 per year. That's $1,226 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%$7,688
Williamson CountyCounty0.3694%$3,180
Walsh Ranch MUDMUD0.3455%$2,974
Austin Community Collegespecial0.1034%$890
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$861
Williamson County FM/RdCounty0.0443%$382
Upper Brushy Creek WCIDWater0.0170%$146
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8728%$16,122

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $751,684 would pay approximately $4,692 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