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300 LAKE CREEK CIR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath2,208 sqftBuilt 1978

Property at a Glance

This home is estimated between $341,197 and $410,254, with a best estimate of $381,033. That places the property above the R450X - Round Rock East - Duplex median of $355,449, in a neighborhood that declined 8.7% over the past year.

Estimated Value Range

$341,197 $410,254
Best Estimate
$381,033
WCAD Value
$361,168
High Confidence

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

Based on 5 comparable properties in R450X - Round Rock East - Duplex, this home's estimated market value is between $341,197 and $410,254. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

320/322 LAKE CREEK CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,692 sqft Built 1978
Raw Value $322,555
Adjusted Value $381,033

Adjusted +$100,265 for 516 sqft more living space and -$41,787 for no garage. Net adjustment: +$58,478.

310 LAKE CREEK CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,768 sqft Built 1978
Raw Value $324,757
Adjusted Value $410,254

Adjusted +$85,497 for 440 sqft more living space. Net adjustment: +$85,497.

304 LAKE CREEK CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,750 sqft Built 1978
Raw Value $318,395
Adjusted Value $407,390

Adjusted +$88,995 for 458 sqft more living space. Net adjustment: +$88,995.

425/427 LAKE CREEK CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 4 bath 2,234 sqft Built 1978
Raw Value $388,036
Adjusted Value $341,197

Adjusted -$5,052 for 26 sqft less living space and -$41,787 for no garage. Net adjustment: -$46,839.

413/415 LAKE CREEK CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,041 sqft Built 1975
Raw Value $357,523
Adjusted Value $351,187

Adjusted +$32,450 for 167 sqft more living space and +$3,001 for being newer and -$41,787 for no garage. Net adjustment: -$6,336.

The Neighborhood

This home is valued 1.6% above the R450X - Round Rock East - Duplex median of $355,449. With 836 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.7% over the past year.

R450X - Round Rock East - Duplex

typical
836 Properties
$355,449 Median Value
-8.7% YoY Change
0% Have Pool
84% Have Garage
This Home
$361,168
Median
$355,449

This home is +1.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,498 across all districts. With a homestead exemption claimed, that drops to $5,181 — saving $1,317 per year. That's $432 per month a buyer should budget. The assessed value increased -0.3% vs the subdivision average of -8.7%. This above-average increase gives a protest opportunity score of 42 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$3,226
Round RockCity0.3720%$1,344
Williamson CountyCounty0.3694%$1,334
Austin Community Collegespecial0.1034%$373
Williamson County FM/RdCounty0.0443%$160
Upper Brushy Creek WCIDWater0.0170%$61
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,498
42 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $381,033 would pay approximately $2,378 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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