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421 RANCHO SIENNA LOOP, GEORGETOWN, TX 78628

GEORGETOWN, 78628 — williamson County

4 bed3 bath3,304 sqftBuilt 2018

Property at a Glance

This home is estimated between $632,725 and $690,769, with a best estimate of $667,272. That places the property above the I450610C - RANCHO SIENNA median of $511,660, in a neighborhood that declined 4.3% over the past year.

Estimated Value Range

$632,725 $690,769
Best Estimate
$667,272
WCAD Value
$658,438
High Confidence

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

Based on 5 comparable properties in I450610C - RANCHO SIENNA, this home's estimated market value is between $632,725 and $690,769. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

425 RANCHO SIENNA LOOP, GEORGETOWN, TX 78628
0.01 mi 100% similar Same subdivision
4 bed 3 bath 3,282 sqft Built 2018
Raw Value $657,428
Adjusted Value $662,233

Adjusted +$4,805 for 22 sqft more living space. Net adjustment: +$4,805.

417 RANCHO SIENNA LOOP, GEORGETOWN, TX 78628
0.02 mi 100% similar Same subdivision
4 bed 3 bath 2,925 sqft Built 2018
Raw Value $604,493
Adjusted Value $687,274

Adjusted +$82,781 for 379 sqft more living space. Net adjustment: +$82,781.

144 CATANI LOOP, GEORGETOWN, TX 78628
0.03 mi 100% similar Same subdivision
2 bed 3 bath 2,935 sqft Built 2020
Raw Value $619,999
Adjusted Value $690,769

Adjusted +$80,597 for 369 sqft more living space and -$9,827 for being older. Net adjustment: +$70,770.

148 CATANI LOOP, GEORGETOWN, TX 78628
0.03 mi 100% similar Same subdivision
5 bed 4 bath 3,570 sqft Built 2020
Raw Value $700,652
Adjusted Value $632,725

Adjusted -$58,100 for 266 sqft less living space and -$9,827 for being older. Net adjustment: -$67,927.

140 CATANI LOOP, GEORGETOWN, TX 78628
0.04 mi 100% similar Same subdivision
4 bed 3 bath 3,133 sqft Built 2020
Raw Value $639,749
Adjusted Value $667,272

Adjusted +$37,350 for 171 sqft more living space and -$9,827 for being older. Net adjustment: +$27,523.

The Neighborhood

This home is valued 28.7% above the I450610C - RANCHO SIENNA median of $511,660. With 1,070 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 4.3% over the past year.

I450610C - RANCHO SIENNA

above average
1,070 Properties
$511,660 Median Value
-4.3% YoY Change
0% Have Pool
100% Have Garage
This Home
$658,438
Median
$511,660

This home is +28.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $16,176 across all districts. With a homestead exemption claimed, that drops to $14,320 — saving $1,856 per year. That's $1,193 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
Liberty Hill ISDSchool1.2389%$8,157
Williamson County MUD #12MUD0.7296%$4,804
Williamson CountyCounty0.3694%$2,433
Williamson County ESD #4 - Liberty HillESD0.0745%$491
Williamson County FM/RdCounty0.0443%$292
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.4568%$16,176

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $667,272 would pay approximately $4,165 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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