Beta Williamson County, TX only — data and coverage are limited during early access.

3102 MONUMENT DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,235 sqftBuilt 1984

Property at a Glance

This home is estimated between $265,846 and $332,402, with a best estimate of $286,167. That places the property below the R210480H - Brushy Creek median of $296,542, in a neighborhood that declined 14.6% over the past year.

Estimated Value Range

$265,846 $332,402
Best Estimate
$286,167
WCAD Value
$324,084
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $265,846 and $332,402. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

3609 CORNERSTONE, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,269 sqft Built 1982
Raw Value $290,537
Adjusted Value $286,167

Adjusted -$7,583 for 34 sqft less living space and +$3,213 for being newer. Net adjustment: -$4,370.

3115 FREEMONT ST, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,303 sqft Built 1984
Raw Value $347,567
Adjusted Value $332,402

Adjusted -$15,165 for 68 sqft less living space. Net adjustment: -$15,165.

4001 HILLSIDE DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,133 sqft Built 1979
Raw Value $293,501
Adjusted Value $324,282

Adjusted +$22,748 for 102 sqft more living space and +$8,033 for being newer. Net adjustment: +$30,781.

3 bed 2 bath 1,254 sqft Built 1984
Raw Value $270,083
Adjusted Value $265,846

Adjusted -$4,237 for 19 sqft less living space. Net adjustment: -$4,237.

2901 MONUMENT DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,212 sqft Built 1982
Raw Value $268,403
Adjusted Value $276,745

Adjusted +$5,129 for 23 sqft more living space and +$3,213 for being newer. Net adjustment: +$8,342.

The Neighborhood

This home is valued 9.3% above the R210480H - Brushy Creek median of $296,542. With 871 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 14.6% over the past year.

R210480H - Brushy Creek

typical
871 Properties
$296,542 Median Value
-14.6% YoY Change
2% Have Pool
94% Have Garage
This Home
$324,084
Median
$296,542

This home is +9.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,203 across all districts. With a homestead exemption claimed, that drops to $4,893 — saving $1,310 per year. That's $408 per month a buyer should budget. The assessed value increased -1.8% vs the subdivision average of -14.6%. This above-average increase gives a protest opportunity score of 50 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$2,894
Brushy Creek MUDMUD0.3868%$1,254
Williamson CountyCounty0.3694%$1,197
Austin Community Collegespecial0.1034%$335
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$324
Williamson County FM/RdCounty0.0443%$144
Upper Brushy Creek WCIDWater0.0170%$55
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9141%$6,203
50 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $286,167 would pay approximately $1,786 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.

View full property details