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907 MAMMOTH CT, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,105 sqftBuilt 2000

Property at a Glance

This home is estimated between $363,033 and $435,098, with a best estimate of $395,393. That places the property above the R107503F - PRESERVE AT STONE OAK - PH 3 & 4 median of $368,194, in a neighborhood that declined 10.9% over the past year.

Estimated Value Range

$363,033 $435,098
Best Estimate
$395,393
WCAD Value
$361,832
High Confidence

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

Based on 5 comparable properties in R107503F - PRESERVE AT STONE OAK - PH 3 & 4, this home's estimated market value is between $363,033 and $435,098. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

904 MAMMOTH CT, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 920 sqft Built 2000
Raw Value $397,437
Adjusted Value $435,098

Adjusted +$37,661 for 185 sqft more living space. Net adjustment: +$37,661.

905 MAMMOTH CT, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 966 sqft Built 2000
Raw Value $367,096
Adjusted Value $395,393

Adjusted +$28,297 for 139 sqft more living space. Net adjustment: +$28,297.

908 MAMMOTH CT, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 966 sqft Built 2000
Raw Value $370,309
Adjusted Value $398,606

Adjusted +$28,297 for 139 sqft more living space. Net adjustment: +$28,297.

903 MAMMOTH CT, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,105 sqft Built 2000
Raw Value $375,280
Adjusted Value $375,280

This comparable closely matches the subject property's features.

911 MAMMOTH CT, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,105 sqft Built 2000
Raw Value $363,033
Adjusted Value $363,033

This comparable closely matches the subject property's features.

The Neighborhood

This home is valued 1.7% below the R107503F - PRESERVE AT STONE OAK - PH 3 & 4 median of $368,194. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 10.9% over the past year.

R107503F - PRESERVE AT STONE OAK - PH 3 & 4

typical
1,045 Properties
$368,194 Median Value
-10.9% YoY Change
1% Have Pool
99% Have Garage
This Home
$361,832
Median
$368,194

This home is -1.7% below the subdivision median.

Tax Analysis

The estimated annual property tax is $6,510 across all districts. With a homestead exemption claimed, that drops to $5,193 — saving $1,317 per year. That's $433 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%$3,232
Round RockCity0.3720%$1,346
Williamson CountyCounty0.3694%$1,337
Austin Community Collegespecial0.1034%$374
Williamson County FM/RdCounty0.0443%$160
Upper Brushy Creek WCIDWater0.0170%$62
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,510

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $395,393 would pay approximately $2,468 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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