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511 KOLBO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath1,638 sqftBuilt 2017

Property at a Glance

This home is estimated between $290,433 and $678,658, with a best estimate of $454,733. 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

$290,433 $678,658
Best Estimate
$454,733
WCAD Value
$769,528
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 $290,433 and $678,658 should be treated as a rough guide.

Comparable Properties (5)

5 bed 3 bath 1,596 sqft Built 2018
Raw Value $463,524
Adjusted Value $477,393

Adjusted +$11,155 for 42 sqft more living space and -$3,521 for being older and +$6,235 for having a pool. Net adjustment: +$13,869.

4 bed 1,707 sqft Built 2018
Raw Value $362,864
Adjusted Value $347,251

Adjusted -$18,327 for 69 sqft less living space and -$3,521 for being older and +$6,235 for having a pool. Net adjustment: -$15,613.

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 $678,658

Adjusted -$163,347 for 615 sqft less living space and +$6,235 for having a pool. Net adjustment: -$157,112.

4 bed 2 bath 1,639 sqft Built 2018
Raw Value $452,285
Adjusted Value $454,733

Adjusted -$266 for 1 sqft less living space and -$3,521 for being older and +$6,235 for having a pool. Net adjustment: +$2,448.

4 bed 3 bath 1,975 sqft Built 2018
Raw Value $377,228
Adjusted Value $290,433

Adjusted -$89,509 for 337 sqft less living space and -$3,521 for being older and +$6,235 for having a pool. Net adjustment: -$86,795.

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
$769,528
Median
$686,297

This home is +12.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,846 across all districts. With a homestead exemption claimed, that drops to $12,453 — saving $1,393 per year. That's $1,038 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%$6,873
Round RockCity0.3720%$2,863
Williamson CountyCounty0.3694%$2,843
Austin Community Collegespecial0.1034%$796
Williamson County FM/RdCounty0.0443%$341
Upper Brushy Creek WCIDWater0.0170%$131
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$13,846

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $454,733 would pay approximately $2,838 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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