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

405 HIGHLAND HORIZON, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed3 bath2,955 sqftBuilt 2009

Property at a Glance

This home is estimated between $738,737 and $1,112,853, with a best estimate of $935,685. 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

$738,737 $1,112,853
Best Estimate
$935,685
WCAD Value
$821,367
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 $738,737 and $1,112,853. 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 $935,685

Adjusted +$12,064 for 39 sqft more living space. Net adjustment: +$12,064.

440 HIGHLAND HORIZON, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,270 sqft Built 2010
Raw Value $913,403
Adjusted Value $1,112,853

Adjusted +$211,887 for 685 sqft more living space and -$12,437 for being older. Net adjustment: +$199,450.

400 HIGHLAND HORIZON, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,874 sqft Built 2012
Raw Value $878,051
Adjusted Value $865,795

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

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 $1,102,891

Adjusted +$271,587 for 878 sqft more living space. Net adjustment: +$271,587.

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 $738,737

Adjusted -$105,170 for 340 sqft less living space. Net adjustment: -$105,170.

The Neighborhood

This home is valued 5.1% 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
$821,367
Median
$781,434

This home is +5.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $16,461 across all districts. With a homestead exemption claimed, that drops to $15,059 — saving $1,402 per year. That's $1,255 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%$7,336
Brushy Creek MUDMUD0.3868%$3,177
Williamson CountyCounty0.3694%$3,035
Austin Community Collegespecial0.1034%$849
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$821
Brushy Creek MUD Defined AreaMUD0.0900%$739
Williamson County FM/RdCounty0.0443%$364
Upper Brushy Creek WCIDWater0.0170%$140
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$16,461

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $935,685 would pay approximately $5,841 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