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645 RANCHO SIENNA LOOP, GEORGETOWN, TX 78628

GEORGETOWN, 78628 — williamson County

4 bed3 bath1,952 sqftBuilt 2018

Property at a Glance

This home is estimated between $364,349 and $564,052, with a best estimate of $422,506. That places the property below the I450610C - RANCHO SIENNA median of $511,660, in a neighborhood that declined 4.3% over the past year.

Estimated Value Range

$364,349 $564,052
Best Estimate
$422,506
WCAD Value
$551,893
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 $364,349 and $564,052. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

649 RANCHO SIENNA LOOP, GEORGETOWN, TX 78628
0.01 mi 100% similar Same subdivision
4 bed 3 bath 2,484 sqft Built 2018
Raw Value $538,706
Adjusted Value $422,506

Adjusted -$116,200 for 532 sqft less living space. Net adjustment: -$116,200.

641 RANCHO SIENNA LOOP, GEORGETOWN, TX 78628
0.01 mi 100% similar Same subdivision
4 bed 3 bath 2,459 sqft Built 2016
Raw Value $543,375
Adjusted Value $442,463

Adjusted -$110,739 for 507 sqft less living space and +$9,827 for being newer. Net adjustment: -$100,912.

653 RANCHO SIENNA LOOP, GEORGETOWN, TX 78628
0.02 mi 100% similar Same subdivision
4 bed 3 bath 2,506 sqft Built 2018
Raw Value $485,354
Adjusted Value $364,349

Adjusted -$121,005 for 554 sqft less living space. Net adjustment: -$121,005.

444 PIENZA DR, GEORGETOWN, TX 78628
0.03 mi 100% similar Same subdivision
5 bed 4 bath 2,125 sqft Built 2017
Raw Value $596,926
Adjusted Value $564,052

Adjusted -$37,787 for 173 sqft less living space and +$4,913 for being newer. Net adjustment: -$32,874.

637 RANCHO SIENNA LOOP, GEORGETOWN, TX 78628
0.03 mi 100% similar Same subdivision
3 bed 2 bath 2,330 sqft Built 2018
Raw Value $478,020
Adjusted Value $395,457

Adjusted -$82,563 for 378 sqft less living space. Net adjustment: -$82,563.

The Neighborhood

This home is valued 7.9% 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

typical
1,070 Properties
$511,660 Median Value
-4.3% YoY Change
0% Have Pool
100% Have Garage
This Home
$551,893
Median
$511,660

This home is +7.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,559 across all districts. With a homestead exemption claimed, that drops to $11,722 — saving $1,837 per year. That's $977 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%$6,837
Williamson County MUD #12MUD0.7296%$4,027
Williamson CountyCounty0.3694%$2,039
Williamson County ESD #4 - Liberty HillESD0.0745%$411
Williamson County FM/RdCounty0.0443%$245
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.4568%$13,559

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $422,506 would pay approximately $2,637 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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