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

1500 BLACKJACK DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath2,266 sqftBuilt 1991

Property at a Glance

This home is estimated between $354,231 and $445,418, with a best estimate of $408,314. That places the property below 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

$354,231 $445,418
Best Estimate
$408,314
WCAD Value
$437,218
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R126592G - WOODS/OAK HOLLOW ALL SECTIONS. The estimated range of $354,231 and $445,418 should be treated as a rough guide.

Comparable Properties (5)

4 bed 4 bath 2,320 sqft Built 1985
Raw Value $437,621
Adjusted Value $445,418

Adjusted -$17,133 for 54 sqft less living space and +$24,930 for being newer. Net adjustment: +$7,797.

3 bed 2 bath 2,125 sqft Built 2004
Raw Value $417,592
Adjusted Value $408,314

Adjusted +$44,737 for 141 sqft more living space and -$54,015 for being older. Net adjustment: -$9,278.

3 bed 2 bath 2,417 sqft Built 2004
Raw Value $473,404
Adjusted Value $371,479

Adjusted -$47,910 for 151 sqft less living space and -$54,015 for being older. Net adjustment: -$101,925.

3 bed 2 bath 2,441 sqft Built 2004
Raw Value $463,771
Adjusted Value $354,231

Adjusted -$55,525 for 175 sqft less living space and -$54,015 for being older. Net adjustment: -$109,540.

3 bed 2 bath 2,092 sqft Built 2004
Raw Value $413,557
Adjusted Value $414,750

Adjusted +$55,208 for 174 sqft more living space and -$54,015 for being older. Net adjustment: +$1,193.

The Neighborhood

This home is valued 4.0% 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

typical
451 Properties
$420,536 Median Value
-8.5% YoY Change
2% Have Pool
99% Have Garage
This Home
$437,218
Median
$420,536

This home is +4.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,867 across all districts. With a homestead exemption claimed, that drops to $6,536 — saving $1,331 per year. That's $545 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%$3,905
Round RockCity0.3720%$1,626
Williamson CountyCounty0.3694%$1,615
Austin Community Collegespecial0.1034%$452
Williamson County FM/RdCounty0.0443%$194
Upper Brushy Creek WCIDWater0.0170%$74
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,867

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $408,314 would pay approximately $2,549 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