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1803 ROBB LN, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed2 bath2,255 sqftBuilt 1978

Property at a Glance

This home is estimated between $416,261 and $501,890, with a best estimate of $439,276. That places the property above the R462475H - Egger Acres median of $353,946, in a neighborhood that declined 4.4% over the past year.

Estimated Value Range

$416,261 $501,890
Best Estimate
$439,276
WCAD Value
$424,324
Low Confidence

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

There are 5 comparable properties within range, but few are in R462475H - Egger Acres. The estimated range of $416,261 and $501,890 should be treated as a rough guide.

Comparable Properties (5)

1809 ROBB LN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,354 sqft Built 1977
Raw Value $441,423
Adjusted Value $419,491

Adjusted -$21,515 for 99 sqft less living space and -$417 for being older. Net adjustment: -$21,932.

1807 ROBB LN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,517 sqft Built 1978
Raw Value $341,507
Adjusted Value $501,890

Adjusted +$160,383 for 738 sqft more living space. Net adjustment: +$160,383.

3 bed 2 bath 1,754 sqft Built 1983
Raw Value $329,460
Adjusted Value $440,424

Adjusted +$108,878 for 501 sqft more living space and +$2,086 for being newer. Net adjustment: +$110,964.

3 bed 2 bath 1,595 sqft Built 1979
Raw Value $295,427
Adjusted Value $439,276

Adjusted +$143,432 for 660 sqft more living space and +$417 for being newer. Net adjustment: +$143,849.

3 bed 2 bath 1,918 sqft Built 1993
Raw Value $336,766
Adjusted Value $416,261

Adjusted +$73,237 for 337 sqft more living space and +$6,258 for being newer. Net adjustment: +$79,495.

The Neighborhood

This home is valued 19.9% above the R462475H - Egger Acres median of $353,946. With 340 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 4.4% over the past year.

R462475H - Egger Acres

above average
340 Properties
$353,946 Median Value
-4.4% YoY Change
6% Have Pool
87% Have Garage
This Home
$424,324
Median
$353,946

This home is +19.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,635 across all districts. With a homestead exemption claimed, that drops to $6,306 — saving $1,329 per year. That's $526 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%$3,790
Round RockCity0.3720%$1,578
Williamson CountyCounty0.3694%$1,568
Austin Community Collegespecial0.1034%$439
Williamson County FM/RdCounty0.0443%$188
Upper Brushy Creek WCIDWater0.0170%$72
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,635

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $439,276 would pay approximately $2,742 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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