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1806 ST WILLIAMS ST, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,674 sqftBuilt 1978

Property at a Glance

This home is estimated between $345,890 and $557,713, with a best estimate of $405,063. That places the property above the R332479H - CHISHOLM VALLEY & NORTHRIDGE ACRES & WILLOW RUN median of $281,358, in a neighborhood that declined 9.6% over the past year.

Estimated Value Range

$345,890 $557,713
Best Estimate
$405,063
WCAD Value
$281,687
Low Confidence

Based on 5 comparable properties(1 in the same subdivision)

There are 5 comparable properties within range, but few are in R332479H - CHISHOLM VALLEY & NORTHRIDGE ACRES & WILLOW RUN. The estimated range of $345,890 and $557,713 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 1,626 sqft Built 1977
Raw Value $398,588
Adjusted Value $405,063

Adjusted +$10,354 for 48 sqft more living space and +$1,559 for being newer and -$5,438 for no garage. Net adjustment: +$6,475.

3 bed 2 bath 1,550 sqft Built 1984
Raw Value $366,931
Adjusted Value $378,887

Adjusted +$26,748 for 124 sqft more living space and -$9,354 for being older and -$5,438 for no garage. Net adjustment: +$11,956.

4 bed 2 bath 1,657 sqft Built 1978
Raw Value $559,484
Adjusted Value $557,713

Adjusted +$3,667 for 17 sqft more living space and -$5,438 for no garage. Net adjustment: -$1,771.

3 bed 2 bath 1,542 sqft Built 1975
Raw Value $383,067
Adjusted Value $410,780

Adjusted +$28,474 for 132 sqft more living space and +$4,677 for being newer and -$5,438 for no garage. Net adjustment: +$27,713.

505 DRY CREEK CT, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,254 sqft Built 1984
Raw Value $270,083
Adjusted Value $345,890

Adjusted +$90,599 for 420 sqft more living space and -$9,354 for being older and -$5,438 for no garage. Net adjustment: +$75,807.

The Neighborhood

This home is in line with the R332479H - CHISHOLM VALLEY & NORTHRIDGE ACRES & WILLOW RUN median of $281,358. Note that values in this subdivision declined 9.6% over the past year.

R332479H - CHISHOLM VALLEY & NORTHRIDGE ACRES & WILLOW RUN

typical
1,006 Properties
$281,358 Median Value
-9.6% YoY Change
2% Have Pool
84% Have Garage
This Home
$281,687
Median
$281,358

This home is +0.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $5,068 across all districts. With a homestead exemption claimed, that drops to $3,766 — saving $1,302 per year. That's $314 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%$2,516
Round RockCity0.3720%$1,048
Williamson CountyCounty0.3694%$1,041
Austin Community Collegespecial0.1034%$291
Williamson County FM/RdCounty0.0443%$125
Upper Brushy Creek WCIDWater0.0170%$48
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,068

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $405,063 would pay approximately $2,528 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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