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612 KOLBO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

5 bed2 bath1,625 sqftBuilt 2018

Property at a Glance

This home is estimated between $590,561 and $760,620, with a best estimate of $689,541. That places the property above the R500515C - FOREST GROVE median of $686,297, in a neighborhood that declined 2.9% over the past year.

Estimated Value Range

$590,561 $760,620
Best Estimate
$689,541
WCAD Value
$734,516
High Confidence

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

Based on 5 comparable properties in R500515C - FOREST GROVE, this home's estimated market value is between $590,561 and $760,620. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

524 KOLBO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
5 bed 3 bath 1,947 sqft Built 2018
Raw Value $775,066
Adjusted Value $689,541

Adjusted -$85,525 for 322 sqft less living space. Net adjustment: -$85,525.

516 KOLBO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
5 bed 3 bath 1,925 sqft Built 2018
Raw Value $670,242
Adjusted Value $590,561

Adjusted -$79,681 for 300 sqft less living space. Net adjustment: -$79,681.

600 KOLBO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,425 sqft Built 2018
Raw Value $707,499
Adjusted Value $760,620

Adjusted +$53,121 for 200 sqft more living space. Net adjustment: +$53,121.

536 KOLBO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,909 sqft Built 2018
Raw Value $768,825
Adjusted Value $693,393

Adjusted -$75,432 for 284 sqft less living space. Net adjustment: -$75,432.

616 KOLBO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,346 sqft Built 2018
Raw Value $801,256
Adjusted Value $609,755

Adjusted -$191,501 for 721 sqft less living space. Net adjustment: -$191,501.

The Neighborhood

This home is valued 7.0% 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
$734,516
Median
$686,297

This home is +7.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,216 across all districts. With a homestead exemption claimed, that drops to $11,830 — saving $1,386 per year. That's $986 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%$6,560
Round RockCity0.3720%$2,732
Williamson CountyCounty0.3694%$2,714
Austin Community Collegespecial0.1034%$759
Williamson County FM/RdCounty0.0443%$326
Upper Brushy Creek WCIDWater0.0170%$125
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$13,216

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $689,541 would pay approximately $4,304 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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