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

1604 BLACKJACK DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,642 sqftBuilt 1994

Property at a Glance

This home is estimated between $334,248 and $669,475, with a best estimate of $593,139. That places the property above the R126592G - WOODS/OAK HOLLOW ALL SECTIONS median of $420,536, in a neighborhood that declined 8.5% over the past year.

Estimated Value Range

$334,248 $669,475
Best Estimate
$593,139
WCAD Value
$508,758
High Confidence

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

Based on 5 comparable properties in R126592G - WOODS/OAK HOLLOW ALL SECTIONS, this home's estimated market value is between $334,248 and $669,475. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1601 BLACKJACK DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,038 sqft Built 1992
Raw Value $469,524
Adjusted Value $669,475

Adjusted +$191,641 for 604 sqft more living space and +$8,310 for being newer. Net adjustment: +$199,951.

1605 BLACKJACK DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,752 sqft Built 1991
Raw Value $356,685
Adjusted Value $334,248

Adjusted -$34,902 for 110 sqft less living space and +$12,465 for being newer. Net adjustment: -$22,437.

1903 BLACKJACK CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,236 sqft Built 1992
Raw Value $456,010
Adjusted Value $593,139

Adjusted +$128,819 for 406 sqft more living space and +$8,310 for being newer. Net adjustment: +$137,129.

1609 BLACKJACK DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,153 sqft Built 1996
Raw Value $491,817
Adjusted Value $638,660

Adjusted +$155,153 for 489 sqft more living space and -$8,310 for being older. Net adjustment: +$146,843.

1911 BLACKJACK CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,501 sqft Built 1991
Raw Value $347,909
Adjusted Value $405,111

Adjusted +$44,737 for 141 sqft more living space and +$12,465 for being newer. Net adjustment: +$57,202.

The Neighborhood

This home is valued 21.0% above the R126592G - WOODS/OAK HOLLOW ALL SECTIONS median of $420,536. With 451 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.5% over the past year.

R126592G - WOODS/OAK HOLLOW ALL SECTIONS

above average
451 Properties
$420,536 Median Value
-8.5% YoY Change
2% Have Pool
99% Have Garage
This Home
$508,758
Median
$420,536

This home is +21.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,154 across all districts. With a homestead exemption claimed, that drops to $7,810 — saving $1,344 per year. That's $651 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%$4,544
Round RockCity0.3720%$1,893
Williamson CountyCounty0.3694%$1,880
Austin Community Collegespecial0.1034%$526
Williamson County FM/RdCounty0.0443%$226
Upper Brushy Creek WCIDWater0.0170%$86
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$9,154

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $593,139 would pay approximately $3,702 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