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1634 SYLVIA CT, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath817 sqftBuilt 1993

Property at a Glance

This home is estimated between $335,144 and $349,532, with a best estimate of $339,028. That places the property above the R123492H - Sam Bass/Hermitage/Somerset R3 median of $290,418, in a neighborhood that declined 7.8% over the past year.

Estimated Value Range

$335,144 $349,532
Best Estimate
$339,028
WCAD Value
$359,090
High Confidence

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

Based on 5 comparable properties in R123492H - Sam Bass/Hermitage/Somerset R3, this home's estimated market value is between $335,144 and $349,532. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1407 SYLVIA LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 822 sqft Built 1994
Raw Value $344,383
Adjusted Value $341,231

Adjusted -$1,141 for 5 sqft less living space and -$2,011 for being older. Net adjustment: -$3,152.

1620 SYLVIA LN, ROUND ROCK, TX 78681
0.00 mi 99% similar Same subdivision
4 bed 2 bath 822 sqft Built 1994
Raw Value $340,121
Adjusted Value $336,969

Adjusted -$1,141 for 5 sqft less living space and -$2,011 for being older. Net adjustment: -$3,152.

1602 SYLVIA LN, ROUND ROCK, TX 78681
0.00 mi 99% similar Same subdivision
4 bed 2 bath 822 sqft Built 1995
Raw Value $354,696
Adjusted Value $349,532

Adjusted -$1,141 for 5 sqft less living space and -$4,023 for being older. Net adjustment: -$5,164.

1504 SYLVIA LN, ROUND ROCK, TX 78681
0.00 mi 99% similar Same subdivision
4 bed 2 bath 822 sqft Built 1995
Raw Value $340,308
Adjusted Value $335,144

Adjusted -$1,141 for 5 sqft less living space and -$4,023 for being older. Net adjustment: -$5,164.

1629 SYLVIA CT, ROUND ROCK, TX 78681
0.00 mi 99% similar Same subdivision
4 bed 2 bath 822 sqft Built 1995
Raw Value $344,192
Adjusted Value $339,028

Adjusted -$1,141 for 5 sqft less living space and -$4,023 for being older. Net adjustment: -$5,164.

The Neighborhood

This home is valued 23.6% above the R123492H - Sam Bass/Hermitage/Somerset R3 median of $290,418. With 648 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 7.8% over the past year.

R123492H - Sam Bass/Hermitage/Somerset R3

above average
648 Properties
$290,418 Median Value
-7.8% YoY Change
2% Have Pool
89% Have Garage
This Home
$359,090
Median
$290,418

This home is +23.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,461 across all districts. With a homestead exemption claimed, that drops to $5,144 — saving $1,317 per year. That's $429 per month a buyer should budget. The assessed value increased +0.6% vs the subdivision average of -7.8%. This above-average increase gives a protest opportunity score of 42 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$3,207
Round RockCity0.3720%$1,336
Williamson CountyCounty0.3694%$1,327
Austin Community Collegespecial0.1034%$371
Williamson County FM/RdCounty0.0443%$159
Upper Brushy Creek WCIDWater0.0170%$61
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,461
42 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $339,028 would pay approximately $2,116 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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