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1821 ABERDEEN DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,524 sqftBuilt 1979

Property at a Glance

This home is estimated between $272,445 and $333,705, with a best estimate of $292,657. That places the property above the R463489I - Greenhill Sec 1,3,5 median of $237,198, in a neighborhood that declined 16.7% over the past year.

Estimated Value Range

$272,445 $333,705
Best Estimate
$292,657
WCAD Value
$285,342
Low Confidence

Based on 5 comparable properties(2 in the same subdivision)

There are 5 comparable properties within range, but few are in R463489I - Greenhill Sec 1,3,5. The estimated range of $272,445 and $333,705 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 1,474 sqft Built 1985
Raw Value $304,858
Adjusted Value $333,705

Adjusted +$10,135 for 50 sqft more living space and +$18,712 for being newer. Net adjustment: +$28,847.

1806 BRADMORE DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,284 sqft Built 1979
Raw Value $249,467
Adjusted Value $298,115

Adjusted +$48,648 for 240 sqft more living space. Net adjustment: +$48,648.

3 bed 2 bath 1,670 sqft Built 1978
Raw Value $319,246
Adjusted Value $286,533

Adjusted -$29,594 for 146 sqft less living space and -$3,119 for being older. Net adjustment: -$32,713.

1810 DENFIELD DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,228 sqft Built 1979
Raw Value $232,658
Adjusted Value $292,657

Adjusted +$59,999 for 296 sqft more living space. Net adjustment: +$59,999.

3 bed 2 bath 1,392 sqft Built 1975
Raw Value $258,164
Adjusted Value $272,445

Adjusted +$26,756 for 132 sqft more living space and -$12,475 for being older. Net adjustment: +$14,281.

The Neighborhood

This home is valued 20.3% above the R463489I - Greenhill Sec 1,3,5 median of $237,198. With 286 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 16.7% over the past year.

R463489I - Greenhill Sec 1,3,5

above average
286 Properties
$237,198 Median Value
-16.7% YoY Change
2% Have Pool
82% Have Garage
This Home
$285,342
Median
$237,198

This home is +20.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $5,134 across all districts. With a homestead exemption claimed, that drops to $3,831 — saving $1,303 per year. That's $319 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%$2,548
Round RockCity0.3720%$1,061
Williamson CountyCounty0.3694%$1,054
Austin Community Collegespecial0.1034%$295
Williamson County FM/RdCounty0.0443%$126
Upper Brushy Creek WCIDWater0.0170%$49
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,134

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $292,657 would pay approximately $1,827 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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