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

1800 EGGER AVE, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,664 sqftBuilt 1977

Property at a Glance

This home is estimated between $295,325 and $377,724, with a best estimate of $315,110. That places the property below the R462475H - Egger Acres median of $353,946, in a neighborhood that declined 4.4% over the past year.

Estimated Value Range

$295,325 $377,724
Best Estimate
$315,110
WCAD Value
$370,296
Medium Confidence

Based on 5 comparable properties(3 in the same subdivision)

Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $295,325 and $377,724. More comparables in the same subdivision would strengthen this estimate.

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 $295,325

Adjusted -$149,952 for 690 sqft less living space and +$3,854 for having a pool. Net adjustment: -$146,098.

3 bed 2 bath 1,595 sqft Built 1979
Raw Value $295,427
Adjusted Value $315,110

Adjusted +$14,995 for 69 sqft more living space and +$834 for being newer and +$3,854 for having a pool. Net adjustment: +$19,683.

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 $377,724

Adjusted +$31,946 for 147 sqft more living space and +$417 for being newer and +$3,854 for having a pool. Net adjustment: +$36,217.

3 bed 2 bath 1,754 sqft Built 1983
Raw Value $329,460
Adjusted Value $316,258

Adjusted -$19,559 for 90 sqft less living space and +$2,503 for being newer and +$3,854 for having a pool. Net adjustment: -$13,202.

1803 ROBB LN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,255 sqft Built 1978
Raw Value $424,324
Adjusted Value $300,158

Adjusted -$128,437 for 591 sqft less living space and +$417 for being newer and +$3,854 for having a pool. Net adjustment: -$124,166.

The Neighborhood

This home is valued 4.6% 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

typical
340 Properties
$353,946 Median Value
-4.4% YoY Change
6% Have Pool
87% Have Garage
This Home
$370,296
Median
$353,946

This home is +4.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,663 across all districts. With a homestead exemption claimed, that drops to $5,344 — saving $1,319 per year. That's $445 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%$3,307
Round RockCity0.3720%$1,378
Williamson CountyCounty0.3694%$1,368
Austin Community Collegespecial0.1034%$383
Williamson County FM/RdCounty0.0443%$164
Upper Brushy Creek WCIDWater0.0170%$63
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,663

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $315,110 would pay approximately $1,967 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