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905 S IH 35, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed1 bath1,444 sqftBuilt 1960

Property at a Glance

This home is estimated between $355,750 and $1,090,131, with a best estimate of $470,599. That places the property above the R701575F - OLD TOWN ROUND ROCK median of $319,256, in a neighborhood that appreciated 4.3% over the past year.

Estimated Value Range

$355,750 $1,090,131
Best Estimate
$470,599
WCAD Value
$213,326
Low Confidence

Based on 5 comparable properties(2 in the same subdivision)

There are 5 comparable properties within range, but few are in R701575F - OLD TOWN ROUND ROCK. The estimated range of $355,750 and $1,090,131 should be treated as a rough guide.

Comparable Properties (5)

703 IH 35 S, ROUND ROCK, TX 78664
0.00 mi 89% similar Same subdivision
2 bed 1 bath 1,204 sqft Built 1955
Raw Value $278,665
Adjusted Value $355,750

Adjusted +$61,623 for 240 sqft more living space and +$15,462 for being newer. Net adjustment: +$77,085.

3 bed 1,279 sqft Built 1984
Raw Value $1,121,981
Adjusted Value $1,090,131

Adjusted +$42,366 for 165 sqft more living space and -$74,216 for being older. Net adjustment: -$31,850.

812 IH 35 S, ROUND ROCK, TX 78664
0.00 mi 75% similar Same subdivision
1 bed 1 bath 724 sqft Built 1930
Raw Value $161,664
Adjusted Value $439,302

Adjusted +$184,868 for 720 sqft more living space and +$92,770 for being newer. Net adjustment: +$277,638.

3 bed 2 bath 1,453 sqft Built 1981
Raw Value $662,269
Adjusted Value $470,599

Adjusted -$2,311 for 9 sqft less living space and -$64,939 for being older and -$124,420 for no garage. Net adjustment: -$191,670.

3 bed 2,800 sqft Built 1970
Raw Value $974,872
Adjusted Value $595,781

Adjusted -$348,168 for 1,356 sqft less living space and -$30,923 for being older. Net adjustment: -$379,091.

The Neighborhood

This home is valued 33.2% below the R701575F - OLD TOWN ROUND ROCK median of $319,256. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 4.3% over the past year.

R701575F - OLD TOWN ROUND ROCK

below average
360 Properties
$319,256 Median Value
+4.3% YoY Change
5% Have Pool
24% Have Garage
This Home
$213,326
Median
$319,256

This home is -33.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $2,737 across all districts. With a homestead exemption claimed, that drops to $1,459 — saving $1,278 per year. That's $122 per month a buyer should budget. The assessed value increased +54.3% vs the subdivision average of +4.3%. This above-average increase gives a protest opportunity score of 95 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$1,359
Round RockCity0.3720%$566
Williamson CountyCounty0.3694%$562
Austin Community Collegespecial0.1034%$157
Williamson County FM/RdCounty0.0443%$67
Upper Brushy Creek WCIDWater0.0170%$26
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$2,737
95 / 100

There may be a strong case to protest this appraisal.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $470,599 would pay approximately $2,937 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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