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

2100 ROSEMARY LN, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,447 sqftBuilt 1987

Property at a Glance

This home is estimated between $256,564 and $444,299, with a best estimate of $320,324. That places the property below the R510485H - SOUTHCREEK median of $335,905, in a neighborhood that declined 4.2% over the past year.

Estimated Value Range

$256,564 $444,299
Best Estimate
$320,324
WCAD Value
$355,863
High Confidence

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

Based on 5 comparable properties in R510485H - SOUTHCREEK, this home's estimated market value is between $256,564 and $444,299. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

2202 ROSEMARY LN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 916 sqft Built 1987
Raw Value $317,964
Adjusted Value $444,299

Adjusted +$126,335 for 531 sqft more living space. Net adjustment: +$126,335.

2105 ROSEMARY LN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,554 sqft Built 1987
Raw Value $345,781
Adjusted Value $320,324

Adjusted -$25,457 for 107 sqft less living space. Net adjustment: -$25,457.

2115 ROSEMARY LN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,737 sqft Built 1993
Raw Value $336,267
Adjusted Value $256,564

Adjusted -$68,996 for 290 sqft less living space and -$8,846 for being older and -$1,861 for no pool. Net adjustment: -$79,703.

2119 ROSEMARY LN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,992 sqft Built 1992
Raw Value $403,140
Adjusted Value $266,102

Adjusted -$129,666 for 545 sqft less living space and -$7,372 for being older. Net adjustment: -$137,038.

2205 ROSEMARY LN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,222 sqft Built 1986
Raw Value $303,517
Adjusted Value $358,523

Adjusted +$53,532 for 225 sqft more living space and +$1,474 for being newer. Net adjustment: +$55,006.

The Neighborhood

This home is valued 5.9% above the R510485H - SOUTHCREEK median of $335,905. With 1,020 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 4.2% over the past year.

R510485H - SOUTHCREEK

typical
1,020 Properties
$335,905 Median Value
-4.2% YoY Change
1% Have Pool
97% Have Garage
This Home
$355,863
Median
$335,905

This home is +5.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,403 across all districts. With a homestead exemption claimed, that drops to $5,087 — saving $1,316 per year. That's $424 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%$3,178
Round RockCity0.3720%$1,324
Williamson CountyCounty0.3694%$1,315
Austin Community Collegespecial0.1034%$368
Williamson County FM/RdCounty0.0443%$158
Upper Brushy Creek WCIDWater0.0170%$60
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,403

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $320,324 would pay approximately $1,999 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