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903 SUMMIT, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,360 sqftBuilt 1984

Property at a Glance

This home is estimated between $265,152 and $450,803, with a best estimate of $297,497. That places the property below the R503460E - Summit, Big Oaks, Vista Abstracts median of $329,210, in a neighborhood that declined 5.0% over the past year.

Estimated Value Range

$265,152 $450,803
Best Estimate
$297,497
WCAD Value
$579,679
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R503460E - Summit, Big Oaks, Vista Abstracts. The estimated range of $265,152 and $450,803 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 1,292 sqft Built 1983
Raw Value $267,561
Adjusted Value $265,152

Adjusted +$12,522 for 68 sqft more living space and +$8,143 for being newer and -$23,074 for no garage. Net adjustment: -$2,409.

3 bed 2 bath 1,420 sqft Built 1979
Raw Value $283,064
Adjusted Value $289,657

Adjusted -$11,049 for 60 sqft less living space and +$40,716 for being newer and -$23,074 for no garage. Net adjustment: +$6,593.

3 bed 2 bath 1,438 sqft Built 1979
Raw Value $303,981
Adjusted Value $307,260

Adjusted -$14,363 for 78 sqft less living space and +$40,716 for being newer and -$23,074 for no garage. Net adjustment: +$3,279.

4 bed 2 bath 1,358 sqft Built 1986
Raw Value $489,796
Adjusted Value $450,803

Adjusted +$368 for 2 sqft more living space and -$16,287 for being older and -$23,074 for no garage. Net adjustment: -$38,993.

3 bed 2 bath 1,250 sqft Built 1979
Raw Value $259,599
Adjusted Value $297,497

Adjusted +$20,256 for 110 sqft more living space and +$40,716 for being newer and -$23,074 for no garage. Net adjustment: +$37,898.

The Neighborhood

This home is valued 76.1% above the R503460E - Summit, Big Oaks, Vista Abstracts median of $329,210. With 13 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 5.0% over the past year.

R503460E - Summit, Big Oaks, Vista Abstracts

outlier high
13 Properties
$329,210 Median Value
-5.0% YoY Change
8% Have Pool
39% Have Garage
This Home
$579,679
Median
$329,210

This home is +76.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,430 across all districts. With a homestead exemption claimed, that drops to $9,073 — saving $1,357 per year. That's $756 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%$5,177
Round RockCity0.3720%$2,156
Williamson CountyCounty0.3694%$2,142
Austin Community Collegespecial0.1034%$599
Williamson County FM/RdCounty0.0443%$257
Upper Brushy Creek WCIDWater0.0170%$99
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$10,430

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $297,497 would pay approximately $1,857 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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