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

316 W DOUCET CV, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath1,613 sqftBuilt 2018

Property at a Glance

This home is estimated between $522,668 and $576,101, with a best estimate of $534,558. That places the property above the H121413C - SIENA median of $406,354, in a neighborhood that declined 5.4% over the past year.

Estimated Value Range

$522,668 $576,101
Best Estimate
$534,558
WCAD Value
$448,838
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in H121413C - SIENA. The estimated range of $522,668 and $576,101 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 1,802 sqft Built 2013
Raw Value $558,327
Adjusted Value $529,514

Adjusted -$39,956 for 189 sqft less living space and +$11,143 for being newer. Net adjustment: -$28,813.

4 bed 3 bath 1,884 sqft Built 2013
Raw Value $568,817
Adjusted Value $522,668

Adjusted -$57,292 for 271 sqft less living space and +$11,143 for being newer. Net adjustment: -$46,149.

4 bed 3 bath 1,880 sqft Built 2012
Raw Value $577,632
Adjusted Value $534,558

Adjusted -$56,446 for 267 sqft less living space and +$13,372 for being newer. Net adjustment: -$43,074.

4 bed 3 bath 1,344 sqft Built 2013
Raw Value $508,089
Adjusted Value $576,101

Adjusted +$56,869 for 269 sqft more living space and +$11,143 for being newer. Net adjustment: +$68,012.

4 bed 3 bath 1,302 sqft Built 2013
Raw Value $491,162
Adjusted Value $568,053

Adjusted +$65,748 for 311 sqft more living space and +$11,143 for being newer. Net adjustment: +$76,891.

The Neighborhood

This home is valued 10.5% above the H121413C - SIENA median of $406,354. With 1,611 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 5.4% over the past year.

H121413C - SIENA

typical
1,611 Properties
$406,354 Median Value
-5.4% YoY Change
1% Have Pool
100% Have Garage
This Home
$448,838
Median
$406,354

This home is +10.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,332 across all districts. With a homestead exemption claimed, that drops to $8,561 — saving $1,771 per year. That's $713 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
Hutto ISDSchool1.2052%$5,409
Siena MUD #1MUD0.5250%$2,356
Williamson CountyCounty0.3694%$1,658
Williamson County ESD #3 - HuttoESD0.1000%$449
Williamson County FM/RdCounty0.0443%$199
EWC Higher Ed Centerspecial0.0409%$183
Upper Brushy Creek WCIDWater0.0170%$76
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$10,332

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $534,558 would pay approximately $3,337 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 4/17/2026.

View full property details