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512 KOLBO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

5 bed4 bath2,285 sqftBuilt 2017

Property at a Glance

This home is estimated between $418,056 and $844,269, with a best estimate of $632,958. 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

$418,056 $844,269
Best Estimate
$632,958
WCAD Value
$730,652
Low Confidence

Based on 5 comparable properties(1 in the same subdivision)

There are 5 comparable properties within range, but few are in R500515C - FOREST GROVE. The estimated range of $418,056 and $844,269 should be treated as a rough guide.

Comparable Properties (5)

5 bed 4 bath 2,517 sqft Built 2018
Raw Value $771,669
Adjusted Value $706,528

Adjusted -$61,620 for 232 sqft less living space and -$3,521 for being older. Net adjustment: -$65,141.

511 TRAILSIDE BND, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,253 sqft Built 2017
Raw Value $835,770
Adjusted Value $844,269

Adjusted +$8,499 for 32 sqft more living space. Net adjustment: +$8,499.

4 bed 3 bath 2,302 sqft Built 2016
Raw Value $419,050
Adjusted Value $418,056

Adjusted -$4,515 for 17 sqft less living space and +$3,521 for being newer. Net adjustment: -$994.

4 bed 3 bath 2,411 sqft Built 2009
Raw Value $638,252
Adjusted Value $632,958

Adjusted -$33,466 for 126 sqft less living space and +$28,172 for being newer. Net adjustment: -$5,294.

4 bed 3 bath 1,975 sqft Built 2018
Raw Value $377,228
Adjusted Value $456,044

Adjusted +$82,337 for 310 sqft more living space and -$3,521 for being older. Net adjustment: +$78,816.

The Neighborhood

This home is valued 6.5% 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
$730,652
Median
$686,297

This home is +6.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,146 across all districts. With a homestead exemption claimed, that drops to $11,761 — saving $1,385 per year. That's $980 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%$6,525
Round RockCity0.3720%$2,718
Williamson CountyCounty0.3694%$2,699
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%$13,146

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $632,958 would pay approximately $3,951 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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