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8700 SPARTA LN, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

3 bed2 bath2,417 sqftBuilt 1976

Property at a Glance

This home is estimated between $462,189 and $594,252, with a best estimate of $533,461. That places the property above the R371378G - FOREST NORTH PHS 3-5 median of $421,794, in a neighborhood that declined 5.7% over the past year.

Estimated Value Range

$462,189 $594,252
Best Estimate
$533,461
WCAD Value
$553,921
Low Confidence

Based on 5 comparable properties(2 in the same subdivision)

There are 5 comparable properties within range, but few are in R371378G - FOREST NORTH PHS 3-5. The estimated range of $462,189 and $594,252 should be treated as a rough guide.

Comparable Properties (5)

8701 SPARTA LN, AUSTIN, TX 78729
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,695 sqft Built 1976
Raw Value $422,517
Adjusted Value $594,252

Adjusted +$171,735 for 722 sqft more living space. Net adjustment: +$171,735.

8802 STILLWATER LN, AUSTIN, TX 78729
0.00 mi 97% similar Same subdivision
3 bed 2 bath 1,660 sqft Built 1993
Raw Value $401,826
Adjusted Value $583,582

Adjusted +$180,060 for 757 sqft more living space and +$1,696 for being newer. Net adjustment: +$181,756.

3 bed 2 bath 2,418 sqft Built 1998
Raw Value $479,070
Adjusted Value $481,027

Adjusted -$238 for 1 sqft less living space and +$2,195 for being newer. Net adjustment: +$1,957.

4 bed 2 bath 2,442 sqft Built 1996
Raw Value $466,140
Adjusted Value $462,189

Adjusted -$5,946 for 25 sqft less living space and +$1,995 for being newer. Net adjustment: -$3,951.

4 bed 2 bath 2,360 sqft Built 1995
Raw Value $518,008
Adjusted Value $533,461

Adjusted +$13,558 for 57 sqft more living space and +$1,895 for being newer. Net adjustment: +$15,453.

The Neighborhood

This home is valued 31.3% above the R371378G - FOREST NORTH PHS 3-5 median of $421,794. With 742 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 5.7% over the past year.

R371378G - FOREST NORTH PHS 3-5

above average
742 Properties
$421,794 Median Value
-5.7% YoY Change
6% Have Pool
92% Have Garage
This Home
$553,921
Median
$421,794

This home is +31.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,809 across all districts. With a homestead exemption claimed, that drops to $8,875 — saving $1,934 per year. That's $740 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%$4,947
AustinCity0.5240%$2,903
Williamson CountyCounty0.3694%$2,046
Austin Community Collegespecial0.1034%$573
Williamson County FM/RdCounty0.0443%$246
Upper Brushy Creek WCIDWater0.0170%$94
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$10,809

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $533,461 would pay approximately $3,330 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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