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604 KOLBO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath1,600 sqftBuilt 2017

Property at a Glance

This home is estimated between $303,144 and $544,932, with a best estimate of $351,042. That places the property below the R500515C - FOREST GROVE median of $686,297, in a neighborhood that declined 2.9% over the past year.

Estimated Value Range

$303,144 $544,932
Best Estimate
$351,042
WCAD Value
$769,304
Low Confidence

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

There are 5 comparable properties within range, but none are in R500515C - FOREST GROVE. The estimated range of $303,144 and $544,932 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 1,658 sqft Built 2011
Raw Value $539,208
Adjusted Value $544,932

Adjusted -$15,405 for 58 sqft less living space and +$21,129 for being newer. Net adjustment: +$5,724.

4 bed 3 bath 1,575 sqft Built 2017
Raw Value $499,392
Adjusted Value $506,032

Adjusted +$6,640 for 25 sqft more living space. Net adjustment: +$6,640.

4 bed 3 bath 1,887 sqft Built 2016
Raw Value $423,749
Adjusted Value $351,042

Adjusted -$76,228 for 287 sqft less living space and +$3,521 for being newer. Net adjustment: -$72,707.

4 bed 3 bath 1,920 sqft Built 2016
Raw Value $384,616
Adjusted Value $303,144

Adjusted -$84,993 for 320 sqft less living space and +$3,521 for being newer. Net adjustment: -$81,472.

3 bed 2 bath 1,706 sqft Built 2017
Raw Value $347,933
Adjusted Value $319,779

Adjusted -$28,154 for 106 sqft less living space. Net adjustment: -$28,154.

The Neighborhood

This home is valued 12.1% above the R500515C - FOREST GROVE median of $686,297. With 197 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 2.9% over the past year.

R500515C - FOREST GROVE

typical
197 Properties
$686,297 Median Value
-2.9% YoY Change
1% Have Pool
100% Have Garage
This Home
$769,304
Median
$686,297

This home is +12.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,842 across all districts. With a homestead exemption claimed, that drops to $12,449 — saving $1,393 per year. That's $1,037 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%$6,871
Round RockCity0.3720%$2,862
Williamson CountyCounty0.3694%$2,842
Austin Community Collegespecial0.1034%$795
Williamson County FM/RdCounty0.0443%$341
Upper Brushy Creek WCIDWater0.0170%$131
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$13,842

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $351,042 would pay approximately $2,191 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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