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3908 OBSIDIAN LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath3,272 sqftBuilt 2008

Property at a Glance

This home is estimated between $611,468 and $1,106,877, with a best estimate of $731,872. 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

$611,468 $1,106,877
Best Estimate
$731,872
WCAD Value
$837,359
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 $611,468 and $1,106,877 should be treated as a rough guide.

Comparable Properties (5)

3908 ALABASTER CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,831 sqft Built 2008
Raw Value $927,555
Adjusted Value $1,106,877

Adjusted +$179,322 for 441 sqft more living space. Net adjustment: +$179,322.

3 bed 2 bath 2,886 sqft Built 2014
Raw Value $584,782
Adjusted Value $825,110

Adjusted +$156,957 for 386 sqft more living space and +$83,371 for being newer. Net adjustment: +$240,328.

3 bed 2 bath 2,890 sqft Built 2008
Raw Value $562,485
Adjusted Value $717,816

Adjusted +$155,331 for 382 sqft more living space. Net adjustment: +$155,331.

4 bed 2 bath 2,936 sqft Built 2003
Raw Value $544,318
Adjusted Value $611,468

Adjusted +$136,626 for 336 sqft more living space and -$69,476 for being older. Net adjustment: +$67,150.

3 bed 2 bath 2,821 sqft Built 2007
Raw Value $562,379
Adjusted Value $731,872

Adjusted +$183,388 for 451 sqft more living space and -$13,895 for being older. Net adjustment: +$169,493.

The Neighborhood

This home is valued 10.3% 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
$837,359
Median
$933,667

This home is -10.3% below the subdivision median.

Tax Analysis

The estimated annual property tax is $15,682 across all districts. With a homestead exemption claimed, that drops to $14,277 — saving $1,405 per year. That's $1,190 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%$7,478
Williamson CountyCounty0.3694%$3,094
Walsh Ranch MUDMUD0.3455%$2,893
Austin Community Collegespecial0.1034%$866
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$837
Williamson County FM/RdCounty0.0443%$371
Upper Brushy Creek WCIDWater0.0170%$142
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8728%$15,682

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $731,872 would pay approximately $4,568 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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