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3340 MARCASITE DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,097 sqftBuilt 2007

Property at a Glance

This home is estimated between $732,876 and $915,576, with a best estimate of $777,441. 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

$732,876 $915,576
Best Estimate
$777,441
WCAD Value
$971,051
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 $732,876 and $915,576 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 $855,041

Adjusted -$49,608 for 122 sqft less living space. Net adjustment: -$49,608.

4 bed 3 bath 2,154 sqft Built 2001
Raw Value $860,722
Adjusted Value $754,173

Adjusted -$23,178 for 57 sqft less living space and -$83,371 for being older. Net adjustment: -$106,549.

4 bed 3 bath 1,916 sqft Built 2014
Raw Value $562,011
Adjusted Value $732,876

Adjusted +$73,599 for 181 sqft more living space and +$97,266 for being newer. Net adjustment: +$170,865.

4 bed 3 bath 1,916 sqft Built 2016
Raw Value $578,786
Adjusted Value $777,441

Adjusted +$73,599 for 181 sqft more living space and +$125,056 for being newer. Net adjustment: +$198,655.

4 bed 3 bath 1,811 sqft Built 2014
Raw Value $702,015
Adjusted Value $915,576

Adjusted +$116,295 for 286 sqft more living space and +$97,266 for being newer. Net adjustment: +$213,561.

The Neighborhood

This home is valued 4.0% above the R147606C - WALSH RANCH median of $933,667. With 239 homes in the subdivision, the property sits in the upper tier. 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
$971,051
Median
$933,667

This home is +4.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $18,186 across all districts. With a homestead exemption claimed, that drops to $16,756 — saving $1,430 per year. That's $1,396 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%$8,672
Williamson CountyCounty0.3694%$3,588
Walsh Ranch MUDMUD0.3455%$3,355
Austin Community Collegespecial0.1034%$1,004
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$971
Williamson County FM/RdCounty0.0443%$430
Upper Brushy Creek WCIDWater0.0170%$165
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8728%$18,186

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $777,441 would pay approximately $4,853 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.

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