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

400 HIGHLAND HORIZON, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed3 bath2,874 sqftBuilt 2012

Property at a Glance

This home is estimated between $750,992 and $1,115,146, with a best estimate of $833,623. That places the property above the R302609C - HIGHLAND HORIZON median of $781,434, in a neighborhood that appreciated 2.3% over the past year.

Estimated Value Range

$750,992 $1,115,146
Best Estimate
$833,623
WCAD Value
$878,051
High Confidence

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

Based on 5 comparable properties in R302609C - HIGHLAND HORIZON, this home's estimated market value is between $750,992 and $1,115,146. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

312 HIGHLAND HORIZON, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
5 bed 4 bath 2,916 sqft Built 2009
Raw Value $923,621
Adjusted Value $947,940

Adjusted -$12,992 for 42 sqft less living space and +$37,311 for being newer. Net adjustment: +$24,319.

441 HIGHLAND HORIZON, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,077 sqft Built 2009
Raw Value $831,304
Adjusted Value $1,115,146

Adjusted +$246,531 for 797 sqft more living space and +$37,311 for being newer. Net adjustment: +$283,842.

421 HIGHLAND HORIZON, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 3,295 sqft Built 2009
Raw Value $843,907
Adjusted Value $750,992

Adjusted -$130,226 for 421 sqft less living space and +$37,311 for being newer. Net adjustment: -$92,915.

405 HIGHLAND HORIZON, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 3 bath 2,955 sqft Built 2009
Raw Value $821,367
Adjusted Value $833,623

Adjusted -$25,055 for 81 sqft less living space and +$37,311 for being newer. Net adjustment: +$12,256.

413 HIGHLAND HORIZON, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 3,018 sqft Built 2010
Raw Value $782,896
Adjusted Value $763,227

Adjusted -$44,543 for 144 sqft less living space and +$24,874 for being newer. Net adjustment: -$19,669.

The Neighborhood

This home is valued 12.4% above the R302609C - HIGHLAND HORIZON median of $781,434. With 399 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 2.3% over the past year.

R302609C - HIGHLAND HORIZON

typical
399 Properties
$781,434 Median Value
+2.3% YoY Change
0% Have Pool
100% Have Garage
This Home
$878,051
Median
$781,434

This home is +12.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $17,597 across all districts. With a homestead exemption claimed, that drops to $16,185 — saving $1,412 per year. That's $1,349 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%$7,842
Brushy Creek MUDMUD0.3868%$3,397
Williamson CountyCounty0.3694%$3,244
Austin Community Collegespecial0.1034%$908
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$878
Brushy Creek MUD Defined AreaMUD0.0900%$790
Williamson County FM/RdCounty0.0443%$389
Upper Brushy Creek WCIDWater0.0170%$149
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$17,597

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $833,623 would pay approximately $5,203 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