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620 KOLBO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath2,917 sqftBuilt 2017

Property at a Glance

This home is estimated between $499,186 and $961,221, with a best estimate of $622,854. 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

$499,186 $961,221
Best Estimate
$622,854
WCAD Value
$730,129
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 $499,186 and $961,221 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 2,470 sqft Built 2013
Raw Value $828,410
Adjusted Value $961,221

Adjusted +$118,725 for 447 sqft more living space and +$14,086 for being newer. Net adjustment: +$132,811.

4 bed 2 bath 2,740 sqft Built 2018
Raw Value $464,980
Adjusted Value $508,471

Adjusted +$47,012 for 177 sqft more living space and -$3,521 for being older. Net adjustment: +$43,491.

4 bed 4 bath 2,328 sqft Built 2015
Raw Value $459,370
Adjusted Value $622,854

Adjusted +$156,441 for 589 sqft more living space and +$7,043 for being newer. Net adjustment: +$163,484.

3 bed 2 bath 2,685 sqft Built 2018
Raw Value $441,087
Adjusted Value $499,186

Adjusted +$61,620 for 232 sqft more living space and -$3,521 for being older. Net adjustment: +$58,099.

4 bed 3 bath 1,920 sqft Built 2016
Raw Value $384,616
Adjusted Value $652,945

Adjusted +$264,808 for 997 sqft more living space and +$3,521 for being newer. Net adjustment: +$268,329.

The Neighborhood

This home is valued 6.4% 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
$730,129
Median
$686,297

This home is +6.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,137 across all districts. With a homestead exemption claimed, that drops to $11,752 — saving $1,385 per year. That's $979 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%$6,521
Round RockCity0.3720%$2,716
Williamson CountyCounty0.3694%$2,697
Austin Community Collegespecial0.1034%$755
Williamson County FM/RdCounty0.0443%$324
Upper Brushy Creek WCIDWater0.0170%$124
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$13,137

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $622,854 would pay approximately $3,888 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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