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3646 WINDHILL LOOP, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath663 sqftBuilt 2000

Property at a Glance

This home is estimated between $248,596 and $352,449, with a best estimate of $326,319. That places the property below the R107503F - PRESERVE AT STONE OAK - PH 3 & 4 median of $368,194, in a neighborhood that declined 10.9% over the past year.

Estimated Value Range

$248,596 $352,449
Best Estimate
$326,319
WCAD Value
$290,020
High Confidence

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

Based on 5 comparable properties in R107503F - PRESERVE AT STONE OAK - PH 3 & 4, this home's estimated market value is between $248,596 and $352,449. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3648 WINDHILL LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 721 sqft Built 1999
Raw Value $365,657
Adjusted Value $352,449

Adjusted -$11,807 for 58 sqft less living space and -$1,401 for being older. Net adjustment: -$13,208.

3622 WINDHILL LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 743 sqft Built 1997
Raw Value $346,807
Adjusted Value $326,319

Adjusted -$16,286 for 80 sqft less living space and -$4,202 for being older. Net adjustment: -$20,488.

3626 WINDHILL LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 718 sqft Built 1999
Raw Value $306,610
Adjusted Value $294,012

Adjusted -$11,197 for 55 sqft less living space and -$1,401 for being older. Net adjustment: -$12,598.

3634 WINDHILL LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 761 sqft Built 1998
Raw Value $363,727
Adjusted Value $340,975

Adjusted -$19,950 for 98 sqft less living space and -$2,802 for being older. Net adjustment: -$22,752.

3644 WINDHILL LOOP, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 913 sqft Built 2000
Raw Value $299,489
Adjusted Value $248,596

Adjusted -$50,893 for 250 sqft less living space. Net adjustment: -$50,893.

The Neighborhood

This home is valued 21.2% below the R107503F - PRESERVE AT STONE OAK - PH 3 & 4 median of $368,194. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 10.9% over the past year.

R107503F - PRESERVE AT STONE OAK - PH 3 & 4

below average
1,045 Properties
$368,194 Median Value
-10.9% YoY Change
1% Have Pool
99% Have Garage
This Home
$290,020
Median
$368,194

This home is -21.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,218 across all districts. With a homestead exemption claimed, that drops to $3,914 — saving $1,304 per year. That's $326 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%$2,590
Round RockCity0.3720%$1,079
Williamson CountyCounty0.3694%$1,071
Austin Community Collegespecial0.1034%$300
Williamson County FM/RdCounty0.0443%$129
Upper Brushy Creek WCIDWater0.0170%$49
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,218

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $326,319 would pay approximately $2,037 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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