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

3817 OCTAVIA LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,740 sqftBuilt 2006

Property at a Glance

This home is estimated between $564,561 and $657,222, with a best estimate of $591,297. That places the property above the L498506D - VILLAGE AT MAYFIELD median of $510,992, in a neighborhood that declined 5.8% over the past year.

Estimated Value Range

$564,561 $657,222
Best Estimate
$591,297
WCAD Value
$562,820
High Confidence

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

Based on 5 comparable properties in L498506D - VILLAGE AT MAYFIELD, this home's estimated market value is between $564,561 and $657,222. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3813 OCTAVIA LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,656 sqft Built 2007
Raw Value $568,150
Adjusted Value $591,297

Adjusted +$23,418 for 84 sqft more living space and -$271 for being older. Net adjustment: +$23,147.

3809 OCTAVIA LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 2 bath 2,077 sqft Built 2006
Raw Value $658,513
Adjusted Value $564,561

Adjusted -$93,952 for 337 sqft less living space. Net adjustment: -$93,952.

3816 OCTAVIA LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,860 sqft Built 2007
Raw Value $614,141
Adjusted Value $580,415

Adjusted -$33,455 for 120 sqft less living space and -$271 for being older. Net adjustment: -$33,726.

3820 OCTAVIA LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,950 sqft Built 2006
Raw Value $652,730
Adjusted Value $594,184

Adjusted -$58,546 for 210 sqft less living space. Net adjustment: -$58,546.

3812 OCTAVIA LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,703 sqft Built 2007
Raw Value $647,178
Adjusted Value $657,222

Adjusted +$10,315 for 37 sqft more living space and -$271 for being older. Net adjustment: +$10,044.

The Neighborhood

This home is valued 10.1% above the L498506D - VILLAGE AT MAYFIELD median of $510,992. With 696 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 5.8% over the past year.

L498506D - VILLAGE AT MAYFIELD

typical
696 Properties
$510,992 Median Value
-5.8% YoY Change
1% Have Pool
100% Have Garage
This Home
$562,820
Median
$510,992

This home is +10.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,127 across all districts. With a homestead exemption claimed, that drops to $8,772 — saving $1,355 per year. That's $731 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%$5,027
Round RockCity0.3720%$2,094
Williamson CountyCounty0.3694%$2,079
Austin Community Collegespecial0.1034%$582
Williamson County FM/RdCounty0.0443%$249
Upper Brushy Creek WCIDWater0.0170%$96
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$10,127

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $591,297 would pay approximately $3,691 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