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

9909 MARIAH CV, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed2,309 sqftBuilt 1997

Property at a Glance

This home is estimated between $489,732 and $876,090, with a best estimate of $647,921. That places the property above the R203597D - Davis Springs, All Sections median of $592,479, in a neighborhood that declined 2.9% over the past year.

Estimated Value Range

$489,732 $876,090
Best Estimate
$647,921
WCAD Value
$782,260
High Confidence

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

Based on 5 comparable properties in R203597D - Davis Springs, All Sections, this home's estimated market value is between $489,732 and $876,090. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

9913 MARIAH CV, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 3 bath 2,821 sqft Built 1998
Raw Value $661,405
Adjusted Value $489,732

Adjusted -$169,055 for 512 sqft less living space and -$2,618 for being older. Net adjustment: -$171,673.

9905 MARIAH CV, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
4 bed 2 bath 2,351 sqft Built 1997
Raw Value $577,337
Adjusted Value $563,469

Adjusted -$13,868 for 42 sqft less living space. Net adjustment: -$13,868.

9901 MARIAH CV, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 2,418 sqft Built 1998
Raw Value $686,529
Adjusted Value $647,921

Adjusted -$35,990 for 109 sqft less living space and -$2,618 for being older. Net adjustment: -$38,608.

9900 MARIAH CV, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 2 bath 1,797 sqft Built 1994
Raw Value $699,180
Adjusted Value $876,090

Adjusted +$169,055 for 512 sqft more living space and +$7,855 for being newer. Net adjustment: +$176,910.

9904 MARIAH CV, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 2 bath 1,638 sqft Built 1994
Raw Value $608,380
Adjusted Value $837,789

Adjusted +$221,554 for 671 sqft more living space and +$7,855 for being newer. Net adjustment: +$229,409.

The Neighborhood

This home is valued 32.0% above the R203597D - Davis Springs, All Sections median of $592,479. With 552 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 2.9% over the past year.

R203597D - Davis Springs, All Sections

above average
552 Properties
$592,479 Median Value
-2.9% YoY Change
1% Have Pool
100% Have Garage
This Home
$782,260
Median
$592,479

This home is +32.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $15,264 across all districts. With a homestead exemption claimed, that drops to $13,050 — saving $2,214 per year. That's $1,088 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%$6,986
AustinCity0.5240%$4,099
Williamson CountyCounty0.3694%$2,890
Austin Community Collegespecial0.1034%$809
Williamson County FM/RdCounty0.0443%$347
Upper Brushy Creek WCIDWater0.0170%$133
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$15,264

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $647,921 would pay approximately $4,044 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