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2100 MONTICELLO CT, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath2,169 sqftBuilt 2009

Property at a Glance

This home is estimated between $418,525 and $772,150, with a best estimate of $610,300. That places the property above the R417506E - TERAVISTA R4 median of $430,980, in a neighborhood that declined 4.6% over the past year.

Estimated Value Range

$418,525 $772,150
Best Estimate
$610,300
WCAD Value
$673,669
Low Confidence

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

There are 5 comparable properties within range, but few are in R417506E - TERAVISTA R4. The estimated range of $418,525 and $772,150 should be treated as a rough guide.

Comparable Properties (5)

2100 RESTON CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,099 sqft Built 2009
Raw Value $755,461
Adjusted Value $772,150

Adjusted +$16,689 for 70 sqft more living space. Net adjustment: +$16,689.

4 bed 3 bath 2,324 sqft Built 2011
Raw Value $548,861
Adjusted Value $513,545

Adjusted -$36,954 for 155 sqft less living space and +$1,638 for being newer. Net adjustment: -$35,316.

4 bed 3 bath 1,948 sqft Built 2013
Raw Value $634,890
Adjusted Value $690,855

Adjusted +$52,689 for 221 sqft more living space and +$3,276 for being newer. Net adjustment: +$55,965.

3 bed 2,236 sqft Built 2012
Raw Value $623,817
Adjusted Value $610,300

Adjusted -$15,974 for 67 sqft less living space and +$2,457 for being newer. Net adjustment: -$13,517.

4 bed 3 bath 2,671 sqft Built 2012
Raw Value $535,751
Adjusted Value $418,525

Adjusted -$119,683 for 502 sqft less living space and +$2,457 for being newer. Net adjustment: -$117,226.

The Neighborhood

This home is valued 56.3% above the R417506E - TERAVISTA R4 median of $430,980. With 1,632 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 4.6% over the past year.

R417506E - TERAVISTA R4

outlier high
1,632 Properties
$430,980 Median Value
-4.6% YoY Change
1% Have Pool
99% Have Garage
This Home
$673,669
Median
$430,980

This home is +56.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,751 across all districts. With a homestead exemption claimed, that drops to $11,376 — saving $1,375 per year. That's $948 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%$6,017
Williamson CountyCounty0.3694%$2,489
Williamson County MUD #11MUD0.3656%$2,463
Austin Community Collegespecial0.1034%$697
Williamson County ESD #9 - Round RockESD0.0999%$673
Williamson County FM/RdCounty0.0443%$299
Upper Brushy Creek WCIDWater0.0170%$115
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8928%$12,751

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $610,300 would pay approximately $3,809 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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