Austin  Standard
Lake AustinMount Bonnell4303 Island Ave
Mount Bonnell · Lake Austin

4303 Island Ave

Waterfront · 78731

Property facts

Type
Waterfront home · Lake Austin
Area
Mount Bonnell
ZIP
78731
Water frontage
~383 ft
Size
3,736 sqft
Year built
1999
Lot size
0.24 acres
Assessed value (TCAD)
$6,843,407

Beds, baths, dock detail, current pricing, photos, and recent sales for this address are being compiled. Request the full profile below and we will send current detail and availability.

TCAD value over time

+16% 20212025
2021 · $5.90M–– assessed (capped)2026 (prelim) · $6.84M

TCAD appraised (market) value by tax year — a relative signal of how the county values this property over time, not a sale price (Texas is non-disclosure). The 2026 value is preliminary (pre-protest) and typically settles lower once certified. The dashed line is the homestead-capped assessed value.

Is this home available?

Get pricing, availability, and the full waterfront profile for 4303 Island Ave.