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2109 MONTICELLO CT, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath2,841 sqftBuilt 2007

Property at a Glance

This home is estimated between $512,063 and $806,414, with a best estimate of $622,055. 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

$512,063 $806,414
Best Estimate
$622,055
WCAD Value
$880,267
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 $512,063 and $806,414 should be treated as a rough guide.

Comparable Properties (5)

4 bed 2 bath 2,602 sqft Built 2010
Raw Value $631,338
Adjusted Value $690,776

Adjusted +$56,981 for 239 sqft more living space and +$2,457 for being newer. Net adjustment: +$59,438.

3 bed 2 bath 2,804 sqft Built 2008
Raw Value $612,415
Adjusted Value $622,055

Adjusted +$8,821 for 37 sqft more living space and +$819 for being newer. Net adjustment: +$9,640.

2103 MONTICELLO CT, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,222 sqft Built 2011
Raw Value $655,561
Adjusted Value $806,414

Adjusted +$147,577 for 619 sqft more living space and +$3,276 for being newer. Net adjustment: +$150,853.

4 bed 3 bath 3,000 sqft Built 2014
Raw Value $544,238
Adjusted Value $512,063

Adjusted -$37,908 for 159 sqft less living space and +$5,733 for being newer. Net adjustment: -$32,175.

4 bed 3 bath 2,454 sqft Built 2007
Raw Value $487,817
Adjusted Value $580,083

Adjusted +$92,266 for 387 sqft more living space. Net adjustment: +$92,266.

The Neighborhood

This home is valued 104.2% 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
$880,267
Median
$430,980

This home is +104.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $16,662 across all districts. With a homestead exemption claimed, that drops to $15,249 — saving $1,413 per year. That's $1,271 per month a buyer should budget. The assessed value increased +1.6% vs the subdivision average of -4.6%. This above-average increase gives a protest opportunity score of 31 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$7,862
Williamson CountyCounty0.3694%$3,252
Williamson County MUD #11MUD0.3656%$3,218
Austin Community Collegespecial0.1034%$910
Williamson County ESD #9 - Round RockESD0.0999%$879
Williamson County FM/RdCounty0.0443%$390
Upper Brushy Creek WCIDWater0.0170%$150
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8928%$16,662
31 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $622,055 would pay approximately $3,883 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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