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221 ADELFA DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath2,150 sqftBuilt 1999

Property at a Glance

This home is estimated between $410,850 and $798,357, with a best estimate of $669,403. That places the property above the R651598E - MORNINGSIDE MEADOWS SEC 1&7, K & B median of $400,408, in a neighborhood that declined 3.0% over the past year.

Estimated Value Range

$410,850 $798,357
Best Estimate
$669,403
WCAD Value
$360,621
Low Confidence

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

There are 5 comparable properties within range, but none are in R651598E - MORNINGSIDE MEADOWS SEC 1&7, K & B. The estimated range of $410,850 and $798,357 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 1,155 sqft Built 2011
Raw Value $308,865
Adjusted Value $410,850

Adjusted +$184,406 for 995 sqft more living space and -$82,421 for being older. Net adjustment: +$101,985.

3 bed 2 bath 2,165 sqft Built 2019
Raw Value $884,566
Adjusted Value $744,418

Adjusted -$2,780 for 15 sqft less living space and -$137,368 for being older. Net adjustment: -$140,148.

3 bed 2 bath 1,524 sqft Built 1983
Raw Value $438,034
Adjusted Value $663,947

Adjusted +$116,018 for 626 sqft more living space and +$109,895 for being newer. Net adjustment: +$225,913.

3 bed 2 bath 2,224 sqft Built 1960
Raw Value $544,204
Adjusted Value $798,357

Adjusted -$13,715 for 74 sqft less living space and +$267,868 for being newer. Net adjustment: +$254,153.

3 bed 2 bath 1,473 sqft Built 1983
Raw Value $434,038
Adjusted Value $669,403

Adjusted +$125,470 for 677 sqft more living space and +$109,895 for being newer. Net adjustment: +$235,365.

The Neighborhood

This home is valued 9.9% below the R651598E - MORNINGSIDE MEADOWS SEC 1&7, K & B median of $400,408. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 3.0% over the past year.

R651598E - MORNINGSIDE MEADOWS SEC 1&7, K & B

typical
270 Properties
$400,408 Median Value
-3.0% YoY Change
3% Have Pool
99% Have Garage
This Home
$360,621
Median
$400,408

This home is -9.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,507 across all districts. With a homestead exemption claimed, that drops to $4,190 — saving $1,317 per year. That's $349 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%$3,221
Williamson CountyCounty0.3694%$1,332
Austin Community Collegespecial0.1034%$373
Williamson County ESD #9 - Round RockESD0.0999%$360
Williamson County FM/RdCounty0.0443%$160
Upper Brushy Creek WCIDWater0.0170%$61
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5272%$5,507

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $669,403 would pay approximately $4,178 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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