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

3605 CURTIS DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath3,512 sqftBuilt 2009

Property at a Glance

This home is estimated between $685,119 and $1,377,501, with a best estimate of $1,233,030. That places the property above the R102606C - SENDERO SPRINGS / BEHREN'S RANCH R5 median of $750,158, in a neighborhood that appreciated 0.3% over the past year.

Estimated Value Range

$685,119 $1,377,501
Best Estimate
$1,233,030
WCAD Value
$971,763
Low Confidence

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

There are 5 comparable properties within range, but few are in R102606C - SENDERO SPRINGS / BEHREN'S RANCH R5. The estimated range of $685,119 and $1,377,501 should be treated as a rough guide.

Comparable Properties (5)

4 bed 2 bath 3,110 sqft Built 2000
Raw Value $572,254
Adjusted Value $696,138

Adjusted +$148,728 for 402 sqft more living space and -$24,844 for being older. Net adjustment: +$123,884.

3 bed 2 bath 3,097 sqft Built 2000
Raw Value $556,425
Adjusted Value $685,119

Adjusted +$153,538 for 415 sqft more living space and -$24,844 for being older. Net adjustment: +$128,694.

2423 ARBOR DR, ROUND ROCK, TX 78681
0.00 mi 93% similar Same subdivision
4 bed 3 bath 2,154 sqft Built 2001
Raw Value $860,722
Adjusted Value $1,341,060

Adjusted +$502,421 for 1,358 sqft more living space and -$22,083 for being older. Net adjustment: +$480,338.

3 bed 2 bath 2,221 sqft Built 2014
Raw Value $741,595
Adjusted Value $1,233,030

Adjusted +$477,633 for 1,291 sqft more living space and +$13,802 for being newer. Net adjustment: +$491,435.

4 bed 3 bath 2,219 sqft Built 2007
Raw Value $904,649
Adjusted Value $1,377,501

Adjusted +$478,373 for 1,293 sqft more living space and -$5,521 for being older. Net adjustment: +$472,852.

The Neighborhood

This home is valued 29.5% above the R102606C - SENDERO SPRINGS / BEHREN'S RANCH R5 median of $750,158. With 1,049 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 0.3% over the past year.

R102606C - SENDERO SPRINGS / BEHREN'S RANCH R5

above average
1,049 Properties
$750,158 Median Value
+0.3% YoY Change
1% Have Pool
99% Have Garage
This Home
$971,763
Median
$750,158

This home is +29.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $19,290 across all districts. With a homestead exemption claimed, that drops to $17,861 — saving $1,429 per year. That's $1,488 per month a buyer should budget. The assessed value increased +7.3% vs the subdivision average of +0.3%. This above-average increase gives a protest opportunity score of 55 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$8,596
Brushy Creek MUDMUD0.3868%$3,723
Williamson CountyCounty0.3694%$3,556
Austin Community Collegespecial0.1034%$995
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$963
Brushy Creek MUD Defined AreaMUD0.0900%$866
Williamson County FM/RdCounty0.0443%$427
Upper Brushy Creek WCIDWater0.0170%$164
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$19,290
55 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,233,030 would pay approximately $7,697 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