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1808 ST WILLIAMS ST, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,838 sqftBuilt 1979

Property at a Glance

This home is estimated between $388,264 and $600,087, with a best estimate of $465,333. 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

$388,264 $600,087
Best Estimate
$465,333
WCAD Value
$285,274
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 $388,264 and $600,087 should be treated as a rough guide.

Comparable Properties (5)

4 bed 2 bath 1,657 sqft Built 1978
Raw Value $559,484
Adjusted Value $600,087

Adjusted +$39,044 for 181 sqft more living space and +$1,559 for being newer. Net adjustment: +$40,603.

4 bed 2 bath 1,934 sqft Built 1978
Raw Value $484,482
Adjusted Value $465,333

Adjusted -$20,708 for 96 sqft less living space and +$1,559 for being newer. Net adjustment: -$19,149.

3 bed 2 bath 1,877 sqft Built 1984
Raw Value $405,447
Adjusted Value $389,239

Adjusted -$8,413 for 39 sqft less living space and -$7,795 for being older. Net adjustment: -$16,208.

505 DRY CREEK CT, ROUND ROCK, TX 78681
0.00 mi 98% similar Same subdivision
3 bed 2 bath 1,254 sqft Built 1984
Raw Value $270,083
Adjusted Value $388,264

Adjusted +$125,976 for 584 sqft more living space and -$7,795 for being older. Net adjustment: +$118,181.

3 bed 2 bath 1,971 sqft Built 1975
Raw Value $496,156
Adjusted Value $473,702

Adjusted -$28,690 for 133 sqft less living space and +$6,236 for being newer. Net adjustment: -$22,454.

The Neighborhood

This home is valued 1.4% above the R332479H - CHISHOLM VALLEY & NORTHRIDGE ACRES & WILLOW RUN median of $281,358. With 1,006 homes in the subdivision, the property sits in the upper tier. 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
$285,274
Median
$281,358

This home is +1.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $5,133 across all districts. With a homestead exemption claimed, that drops to $3,830 — 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%$48
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,133

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $465,333 would pay approximately $2,905 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 4/19/2026.

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