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3820 LAGOONA DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,079 sqftBuilt 2003

Property at a Glance

This home is estimated between $604,476 and $864,536, with a best estimate of $773,752. 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

$604,476 $864,536
Best Estimate
$773,752
WCAD Value
$597,552
Low Confidence

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

There are 5 comparable properties within range, but none are in L498506D - VILLAGE AT MAYFIELD. The estimated range of $604,476 and $864,536 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 2,219 sqft Built 2007
Raw Value $904,649
Adjusted Value $864,536

Adjusted -$39,030 for 140 sqft less living space and -$1,083 for being older. Net adjustment: -$40,113.

4 bed 3 bath 2,154 sqft Built 2001
Raw Value $860,722
Adjusted Value $840,354

Adjusted -$20,909 for 75 sqft less living space and +$541 for being newer. Net adjustment: -$20,368.

4 bed 3 bath 1,916 sqft Built 2014
Raw Value $562,011
Adjusted Value $604,476

Adjusted +$45,443 for 163 sqft more living space and -$2,978 for being older. Net adjustment: +$42,465.

4 bed 3 bath 1,916 sqft Built 2016
Raw Value $578,786
Adjusted Value $620,710

Adjusted +$45,443 for 163 sqft more living space and -$3,519 for being older. Net adjustment: +$41,924.

4 bed 3 bath 1,811 sqft Built 2014
Raw Value $702,015
Adjusted Value $773,752

Adjusted +$74,715 for 268 sqft more living space and -$2,978 for being older. Net adjustment: +$71,737.

The Neighborhood

This home is valued 16.9% 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

above average
696 Properties
$510,992 Median Value
-5.8% YoY Change
1% Have Pool
100% Have Garage
This Home
$597,552
Median
$510,992

This home is +16.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,910 across all districts. With a homestead exemption claimed, that drops to $10,278 — saving $1,632 per year. That's $857 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
Leander ISDSchool1.0869%$6,495
Round RockCity0.3720%$2,223
Williamson CountyCounty0.3694%$2,208
Austin Community Collegespecial0.1034%$618
Williamson County FM/RdCounty0.0443%$265
Upper Brushy Creek WCIDWater0.0170%$102
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9931%$11,910

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $773,752 would pay approximately $4,830 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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