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4 OLD OAKS DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath2,331 sqftBuilt 1978

Property at a Glance

This home is estimated between $396,244 and $1,354,419, with a best estimate of $407,702. That places the property below the R575583D - RR Rual Sub 122 & Gattis School Rd Area median of $734,399, in a neighborhood that appreciated 3.8% over the past year.

Estimated Value Range

$396,244 $1,354,419
Best Estimate
$407,702
WCAD Value
$643,684
Medium Confidence

Based on 5 comparable properties(3 in the same subdivision)

Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $396,244 and $1,354,419. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

3 OLD OAKS DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,554 sqft Built 1984
Raw Value $1,104,278
Adjusted Value $1,354,419

Adjusted +$250,066 for 777 sqft more living space and +$75 for being newer. Net adjustment: +$250,141.

2 OLD OAKS DR, ROUND ROCK, TX 78665
0.00 mi 99% similar Same subdivision
3 bed 3 bath 3,348 sqft Built 1978
Raw Value $735,008
Adjusted Value $407,702

Adjusted -$327,306 for 1,017 sqft less living space. Net adjustment: -$327,306.

13 OLD OAKS DR, ROUND ROCK, TX 78665
0.00 mi 96% similar Same subdivision
3 bed 3 bath 3,713 sqft Built 1980
Raw Value $849,433
Adjusted Value $404,682

Adjusted -$444,776 for 1,382 sqft less living space and +$25 for being newer. Net adjustment: -$444,751.

3 bed 2,124 sqft Built 2021
Raw Value $555,586
Adjusted Value $622,747

Adjusted +$66,620 for 207 sqft more living space and +$541 for being newer. Net adjustment: +$67,161.

3 bed 2,699 sqft Built 2021
Raw Value $514,138
Adjusted Value $396,244

Adjusted -$118,435 for 368 sqft less living space and +$541 for being newer. Net adjustment: -$117,894.

The Neighborhood

This home is valued 12.4% below the R575583D - RR Rual Sub 122 & Gattis School Rd Area median of $734,399. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 3.8% over the past year.

R575583D - RR Rual Sub 122 & Gattis School Rd Area

typical
213 Properties
$734,399 Median Value
+3.8% YoY Change
4% Have Pool
68% Have Garage
This Home
$643,684
Median
$734,399

This home is -12.4% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,830 across all districts. With a homestead exemption claimed, that drops to $8,461 — saving $1,369 per year. That's $705 per month a buyer should budget. The assessed value increased +8.8% vs the subdivision average of +3.8%. This above-average increase gives a protest opportunity score of 45 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$5,749
Williamson CountyCounty0.3694%$2,378
Austin Community Collegespecial0.1034%$666
Williamson County ESD #9 - Round RockESD0.0999%$643
Williamson County FM/RdCounty0.0443%$285
Upper Brushy Creek WCIDWater0.0170%$109
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5272%$9,830
45 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $407,702 would pay approximately $2,545 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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